S_FA/RS

OWNERS
MANUAL

MODEL NO. CRAFTSMAN AiR COMPRESSOR

919.17673g
919.17683

Record in the spaces provided.

(1) The model number which can be
found on the tabel on the rear of the
air tank.
(2) The code number which can be
found on the foil tabel on the rear of
the air tank.
(3) The Manufacturers Number
(MFG.,.) {ASME Code Compres-
sors onty) is located on the metst
date plate which is welded onto the
backside of the air tank. (This data
plate is painted the same cotor as the
tank.)
(4) The Motor Manufacturers name
which is mocated on the motor tabel
or specification plate.
(5) The Motor Mfg. number- atso
_ocsted on the motor _abel or specifF
cation plate,
Retain these numbers for future
reference.
ASSEMBLY
aMPORTANT:
OPERATION Model No
Read the Safety Guidelines MAINTENANCE
and AH instructions Code No .............................................................
REPAIR PARTS
Carefully Before Operating
Mfg. No,

Motor Mfg. Name

Motor Mfg. No

Sears, Roebuck and Coo, Chicago, IL 60684 U.S.A.

SI-30-14-4-D 6/89
 TABLE OF CONTENTS

Page
.................................................................. 3

SAFETY GU_DEUNES ........................................................ 3

WARNING CHART ............................................................. 3

SPECIFICATION CHART ...................................................... 5

GLOSSARY .................................................................... 5

ACCESSORIES FOR USE WiTH SEARS AIR COMPRESSORS ............. ¢

GENERAL mNFORMATHON .................................................... 6

DESCRIPTION OF OPERATION .............................................. 6

ASSEMBLY _NSTRUCTNONS .................................................. 7

Items You Witt Need to Assemble Your Compressor ................................ 7
Installing Handle .............................................................. 7
Installing Rubber Foot Strip and Wheels .......................................... 8
hstalling Tank Pressure Gauges ................................................. 8
Installing Regulator ............................................................ 8

9NSTALLATmON AND BREAKqN PROCEDURES ............................. 8

Location of Air Compressor ..................................................... 8
Extension Cords .............................................................. 8
Lubrication and Oil ............................................................ 8
Grounding hstructions ......................................................... 9
Break-in Procedures ........................................................... 9

OPERATING PROCEDURES ................................................ 9

MAINTENANCE .............................................................. lo
Air Filter - Inspection and Replacement .......................................... 10
Oil - Checking and Changing ................................................... 10
Check Valve - Replacement .................................................... 10
Safety Valve - Inspection ....................................................... 10
Motor ........................................................................ 10
Belt - Replacement ............................................................ 11
Pulley and Flywheel - Alignment ............................................... 11

STORAGE ................................................................... 11

TROUBLESHOOTING GUIDE ................................................. 11

A_R COMPRESSOR DIAGRAM ............................................... 14

Parts List .................................................................... 16

COMPRESSOR PUMP DIAGRAM ............................................ 15

Parts List .................................................................... !7

HOW TO ORDER REPAIR PARTS ............................................ 18

 FULL ONE YEAR WARRANTY
ON COMPRESSORS

if this air compressor fans due to a defect in material or workmanship within one year from the date of
purchase, return it to the nearest Sears Service Center/Department throughout the United States and
Sears wiii repair it, free of charge.

If this air compressor is used for commercial or rental purposes, the warranty wit! apply for ninety days
from the date of purchase_

This warranty gives you specific legal rights and you may have other rights that vary from state to
state.

Sears, Roebuck and COo, Sears Tower, Dept. 698/7131OR=W, Chicago, IL 60684

SAFETY GUiDELiNES

This manual contains information that is important for you to know and understand. This information
relates to protecting your safety and preventing equipment problems. To help you recognize this
information, we use the following symbols. Please read the manual and pay special attention to
sections headed by these symbols.

URGENT SAFETY _NFORMATNON- A IMPORTANT SAFETY _NFORMATION .- A

HAZARD THNr W_LL CAUSE SEmOUS HAZARD THAT M_GHT CAUSE SERIOUS
_NJURY OR LOSS OF LIFE INJURY OR LOSS OF LIFE,

NOTE

Information for preventing damage to information that you should pay special atten-
equipment. tion to.

HAZARDS CAN OCCUR _F EQUIPMENT IS NOT USED PROPERLY:

PLEASE READ THE FOLLOWING CHART,

WHAT TO WHAT COULD HAPPEN HOW TO PREVENT mT

LOOK FOR

Unsuitable The solvents 1,1,1- Trichlorethane and Methy- If the material you intend to spray contains the sol-
Sobvents lene Chloride can chemically react with alumi- vents listed at left (read the labei or data sheet), do
num used in paint spray guns, paint pumps, etc., not usa accessories that contain aluminum or gal-
and cause an explosion. These solvents can vanized parts. You must either change the material
also react with galvanized components and you intend to spray, or usa only stainless steel
cause corrosion and weakening of parts. This spray equipment.
does not affect your air compressor- but it may
affect the equipment being used.

Electricity Your air compressor is powered by electricity. Always unplug the air compressor prior to mainte-
Like any other electrically powered device, if it is nance or repair.
not used properly it can cause electrical shock. Never use the air compressor outdoors when it is

Always plug the cord into an electrical outlet with

the specified voltage and adequate fuse

3
 WHATTO
LOOK FOR WHAT COULD HAPPEN NOW TO PREVENT }T

Hot Parts The compressor head and tubes get hot when Never touch the air compressor head or tubes dar-
the air compressor is running. If you touch them, ing or immediately after operation.
you can be seriously burned.
Flammable It is normal for the motor's electrical contacts to Operate the compressor in well ventiIated areas
Vapors spark when the compressor starts or stops. A thatarefreeofgasotine, flammablepaintorsoivent
spark can ignite flammable vapors from vapors.
gasoline, flammable paints or solvents and if spaying a flammable material - provide ample
cause a fire or explosion.
ventilation. Never spray in a closed area. There
must be a flow of fresh ad at alt times.
Compressed Air Compressed air can propel dust, dirt or loose Never point any nozzle or sprayer toward a person
particles it comes in contact with. or any part of the body.
Always wear safety goggles or glasses when using
the air compressor.
Always turn the air compressor off and release air
pressure from hose before attaching or removing
accessories.
Too much air pressure applied to air tools or Check the manufacturer's maximum pressure rat-
accessories can cause damage or risk of ing for air tools and accessories. Regulator outiet
bursting. pressure must never exceed the maximum pres-
sure rating.
Moving This compressor cycles automatically when the Always unplug the unit and release air pressure
Parts switch is in the "On-Auto" position. If you from the tank and any accessories before doing
attempt repair or maintenance while the com- repair or maintenance.
pressor is operating, or with the switch in the
"On-Auto" position, you can expose yourself to Never operate the compressor with the belt guard
removed.
moving parts. These moving parts can cause
serious injury or damage, if they come into con-
tact with you or your clothing.
Toxic 'Vapors It is normal for compressed air to contain toxic or Never directly inhale the compressed air produced
irritating vapors. Such vapors are harmful if by this unit.
inhaled.
Read labels and safety data for all materials you
Certain materials you are spraying (like paint, spray. Follow alI safety precautions.
weed killer, sand or insecticide) can be harmfu!
Use a mask or respirator if there is a chance of
if you inhale them.
inhating toxic sprayed materials. Masks and
respirators have timits and will only provide protec-
tion against some kinds and limited amounts of
toxic material. Read mask and respirator instruc-
tions carefully. Consult with a safety expert or
industrial hygienist if you are not sure about the use
of a certain mask or respirator.
Air Tank Modifications to the air compressor can cause Do not adjust, remove or tamper with the safety
the air tank to rupture or explode. vatve or pressure switch. If safety valve or pressure
switch replacement is necessary, a part with the
same pressure rating must be used.
For service replacement use only the motors, pul-
leys and belts designed as standard service
replacement parts as indicated in the parts list.
Use of improper parts could cause overloading of
your unit and electrical supply.
Do not substitute a gas engine for the motor.., this
compressor was not designed to be powered by a
gasoline engine.
Never replace the compressor pump with a differ_
ent model
Never increase the compressor pump speed.
Changing the air tank wi!! cause it to weaken. Never drilt into, weld, or in any way modify the air
The tank can rupture or exptode. tank. Do not repair a leaking tank, it must be
replaced.
Never replace the air tank with a different model or
a larger tank.
4
 SPEC_FICATION CHART

Modem No. 919.176730 9t&176830

Horsepower 3 3
Displacement CFM 11.3 11.3
Bore 2%" 2%"
Stroke 2" 2"
Voltage-Single Phase !20/240"* 120/240"*
Minimum Branch Circuit Requirement !5 amp*** 15 amp***
*Fuse Type Fusetron Fusetron
Type "T" Type "T"
Air Tank Capacity -Galfons 20 20 ASME
Approximate Cut-in Pressure 80 80
Approximate Cut-out Pressure 100 100
SCFM {u 40 psig 8.8 8.8
SCFM (_., 90 psig Z7 7.7
SCFM (t_ 100 psig 7.3 7.3
U.L Listed Yes Yes

**These models have dual voltage motors, !20 and 240 volt. They are WIRED FOR 120 VOLT but can be converted to 240
volt operation. Instructions for connecting the motor for operation at 240 volt can be found printed on the inside of the
motor cover or on the nameplate of the motor.
*A circuit breaker is preferred. Use only a fuse or circuit breaker that is the same rating as the branch circuit the air
compressor is operated on. If the air compressor is connected to a circuit protected by fuses, use dual element time
delay fuses (Buss Fusetron Type "T" only).

These air compressors can be operated on 4. Circuit is equipped with 15 amp circuit
a 15 amp circuit if: breaker or 15 amp Fusetron Type"T" time
demay fuse.
1. Vomtage suppmyto circuit is normat.
2o Circuit is not used to supply any other If any of the above conditions cannot be met, or if opera-
electrical needs (lights, appliances, etc°} tion of the compressor repeatedly causes interruptionof
3. Extension cords comply with specifica- the power it may be necessary to operate it from a 20
tions in owners manual amp circuit. It is not necessary to change the cordset if
this change is required.

When converting this model to 240 volt opera=

rice, the attached three-prong 120 vo_t pJug
must be replaced with a three-prong 240 volt
p_ug (purchase locally) or order line cord Part
No, SUDL-4044.

GLOSSARY
CFM: Cubic feet per minute. Cut4n Pressure: While the motor is off, air tank pres-
sure drops as you continua to use your accessory. When
SCFM: Standard cubic feet per minute; a unit of meas- the tank pressure drops to a certain iow level the motor
ure of air delivery. wif! re-start automatically. The low pressure at which the
motor automatically re-starts is caIled "cut-in pressure,"
PSIG: Pounds per square inch gauge; a unit of measure
of pressure. Cut-Out Pressure: When you turn on your air compres-
sor and it begins to run, air pressure in the air tank begins
ASME: American Society of Mechanical Engineers; to build. It builds to a certain high pressure before the
made, tested, inspected and registered to meet the stan- motor automatically shuts off - protecting your air tank
dards of the ASME. from pressure higher than its capacity, The high pres-
sure at which the motor shuts off is called "cut-out
U.L° Listed: Underwriter Laboratories; Samples of pressure."
compressor outfits, taken from production, were sub-
mitted to U.L and found to comply with their require-
ments for design and performance

5
 ACCESSORIES FOR USE WiTH SEARS COMPRESSORS
The following accessories are available through the current general sales catalog or at fuliqJne Sears stores.
,SPRAY GUNS .PAINT TANKS ,AIR TOOLS:
°BLOW GUNS oAIR TANKS Sanders
oAIR CAULKING GUNS •INFLATOR KITS Drills
oAIR POWERED WASHER GUNS oQUICK CONNECTOR SETS Impact wrenches
,SAND BLASTERS (various sizes) Hammers
°AIR BRUSHES oVISCOSIMETER ,AIR HOSE:
oAIR LINE FILTERS ,AIR PRESSURE REGULATORS 1/4", 5/16" OR 3/8" LD.
oTIRE AIR CHUCKS oOIL FOG LUBRICATORS in various lengths.

GENERAL iNFORMATiON
You have purchased an air compressor unit consisting of An in-line lubricator is usually required for air tools to
a 2 cylinder, single stage air compressor pump, an air prolong toot life.
tank, air hose, wheels, handte, air chuck and associated
controls. Separate air transformers which combine the functions
of air regulation and/or moisture and dirt removal should
Your air compressor can be used for operating paint be used where applicable.
spray guns, air tools, caulking guns, grease guns, air
brushes, sandblasters, power washers, inflating tires These accessories can be purchased from most Sears
and plastic toys, spraying weed killers, insecticides, etc. stores or through the Sears General catatog or Power
Toot catalog.
An air line filter is usually required for removal of mois-
ture and oil vapor in compressed air when a paint spray
gun is used.

VALVE

VALVE

)RAIN
VALVE

Air Compressor Pump: To compress air, the pistons Pressure Remeaee Valve:The pressure release valve
move up and down in the cylinders. On the downstroke, located on the side of the pressure switch, is designed to
air is drawn in through the air intake filter and then automatically release compressed air from the com-
through the air intake valves. The exhaust valve remains pressor head and the outlet tube when the air compres-
closed. On the upstroke of the piston, air is compressed. sor reaches "cut-out" pressure or is shut off. If the air is
The intake valves close and compressed air is forced not release& the motor wilt try to start, but will be unable
out through the exhaust valve, through the outlet tube, to. The pressure release vatve allows the motor to re-
through the check vatve and into the air tank. Working air start freely. When the motor stops running, air wilt be
is not available until the compressor has raised air tank heard escaping from the valve for a few seconds. No air
pressure above that required at the air outlet. should be heard leaking from the valve when the motor is
running.
Check Vatve: When the air compressor is operating, the
check valve is "open", allowing compressed air to enter Safety Valve:tf the pressure switch does not shut off the
the air tank. When the air compressor reaches "cut-out" air compressor at or near its cut-out pressure setting, the
pressure, the check vaIve "closes", aJlowing air pressure safety valve will protect against high pressure by "pop-
to remain inside the air tank. ping out" at its factory-.set pressure (slightJy higher than
the pressure switch cut-out setting).
PressureSwitch: The pressureswitchautomatically the desired pressure. Depending on the air requirements
startsthemotorwhenthesirtankpressure dropsbelow of each particular accessory, the outlet regulated air
thefactoryset"cat-in"pressure,
itstopsthemotorwhen pressure might have to be adjusted while you are
theair tankpressurereachesthefactoryset"cut-out" operating the accessory.
pressure.
Tank Pressure Gauge: The tank pressure gauge indi-
Regumstor:
The air pressure coming from the air tank is cates the reserve air pressure in the tank.
controlled by the regulator knob. Turn the knob
clockwise to increase pressure and counterclockwise to Outlet Pressure Gauge: The outtet pressure gauge
decrease pressure. To avoid minor readjustment after indicates the air pressure available at the outlet side of
making a change in pressure setting, always approach the regulator. This pressure is controfled by the regulator
the desired pressure from a lower pressure. When and is always less or equal to the tank pressure. See
reducing from a higher to a !ower setting, first reduce to "Operating Procedures."
some pressure tess than that desired, then bring up to

ASSEMBLY INSTRUCTIONS
totems You WiN Need To Assemble Your
Compressor
.16 oz, compressor oil, Sears 9-16426 or SAE 20-20W
SF motor oil
o pipe thread sealant
an adjustable wrench for attaching the pressure
regulator
o a 9/16" socket or open-end wrench for attaching the
wheels and hose adapter OF SADDLE

• a 7/16" open-end wrench for attaching the air pressure

gauges
o a 3/16" hex key for installing the plug in the regulator BENT
TABS SAD_
OPEN END
OF HANDLE

Jnstamling Nandme
FIG. 1

TNE WREELS AND HANDLE DO NOT PRO,

VDE ADEQUATE CLEARANCE STAB_UTY
OR SUPPORT FOR PULUNG TRE UNiT UP
AND DOWN STAIRS OR STEPS= TRE UNIT
MUST B£ L_ETED OR PUSNED UP A RAMP°
DO NOT UPT TNE UNiT BY THE _IAN_FOLD
ASSEMBL'£ THE UNiT CAN BE DAMAGED
OPEN END
BENT TAB OF HANDLE
(ONE ON
EACH SEDE)
1. Insert the open end of the handle under the saddle (Fig.
t). Before attaching handle, you may have to pull the FHG.2
open ends of the handle apart so they fit tightly against
the side of the saddle. Looking in from the open end of
the saddle, position the handle towards the two bent
tabs, on the inside waits of the saddle. S!owly push the
open ends of the handle onto both tabs at the same
time (Fig. 2). Continue pushing the handle into the sad-
dle until the holes on the side of the saddle and handle
are in line.
2. Guide the straight end of each retaining clip through the
saddle hole and both handle holes (Fig. 3).
3. Rotate each retaining clip clockwise and press down
until it snaps into place over the putI handle (Fig. 4).
4. If the handle has excessive movement, it is improperly
installed. Check the following:
A. Are both tabs inside the handle (Step #1)?
B. Does each clip pass through both the saddle and
handle (Step #2)? FgG. 3

7
 _nataHing Tank Pressure Gauge
Apply pipe sealant (not supplied) to the gauge threads
and install in the threaded opening in front of the
manifold. Refer to photo on pg. 6_

InstatSing Regulator
(Top View}

PLUG PiPE
N_PPLE
GUARD t REGULATOR

Jt may be necessary to brace or support one

end of the outfit when attaching the wheels
because the air compressor will have a ADAPTER _._
tendency to tip.
MAN_=
mnstagJiag Rubber Foot Strip and Wheels REGULATED FOLD
t. Remove the protective paper strip from the adhesive- PRESSURE GAUGE
backed rubber foot strip. Attach the rubber foot strip to
the bottom of the air tank leg, Press firmly into place. NOTE
(See page 14 key no. 39.)
2. The leg bracket on the underside of the air compres- Use a small amount of pipe thread seatant (not
sor tank has 2 holes on each side for mounting the supplied} on ali pipe thread joints. Install the
wheels. Place one shoulder bolt through the hote in a regulator on the end of the manifold using the
wheel. Next, push the bolt through the LOWER hole of short pipe hippie. The arrow on the bottom of
the leg bracket and screw on one hex locking nut. The the regulator must point away from the manifold
special locking nut does not turn freely. Tighten the in order for the regulator to function properly'.
nut firmly until it contacts the leg. See pg. 14. The Next, install the gauge, adapter and plug in the
outfit will set level if the wheels are properly installed. regulator. The ptug is supplied with the regulator.

NSTALLATJON AND BREAK= N PROCEDURES

Location of the Air Compressor ° the minimum wire size is t2 gauge (AWG}. Sears #9-
Operate the air compressor in a clean, dry and well 83606, 12 gauge x 50' extension cord is available at
ventilated area. The air filter must be kept clear of your local Sears Service Center. (Wire size increases
obstructions which could reduce air delivery of the air as gauge number decreases. 10 AWG and 8 AWG may
compressor. The air compressor should be Iocated at also be used. DO NOT USE !4 AWG or 16 AWG.)
least 12" away from wails OFother obstructions that could
interfere with the flow of air through the fan bladed fly- Lubrication and OH
wheel. The air compressor crankcase and head are
designed with fins to provide proper cooling.

If humidity is high, a Sears air filter can be insta!led on Compressors are shipped without oil Do
the air outlet adapter to remove excessive moisture, and not attempt to operate this air compressor
oil vapor from the air. Closely foilow the instructions without first adding oi_ to the crankcaaeo
packaged with the filter for proper installation. _tmust be
installed as close as possible to the accessory. P!ace unit on a levet surface. Remove oil fill plug (Key no.
81, pg. 15) and slowly add a speciat compressor oil such
Extension Cords as Sears 9-16426 or SAE 20_20W SF motor oil until it is
To avoid voltage drop and power loss to the motor, use even with the top of the oi! fill hole. (it must not be aliowed
extra air hose instead of an extension cord, to be Iower than 3/8"- 6 threads down - from the top, at
any time.) When ill!rig the crankcase, the oil flows vary
tf an extension cord must be used: slowly. If the oil is added too quickly, it will overflow and
o use only a 3-wire extension cord that has a 3-blade appear to be full. Crankcase oiI capacity is 16 fad
grounding piug and a 3-slot receptacle that wilt accept ounces. Under winter-type conditions use SAE 10W oil.
the plug on the product. Multi-viscosity oil, 10W 30_witl teave carbon deposits on
o make sure the extension cord is in good condition. critical components reducing performance and com-
• the extension cord should be no longer than 50 feet. pressor iife. Reptace oil fill plug.
8
Grounding _nstructions If these grounding instructions are not completely
understood, or if you are not sure your compressor is
property grounded, have the installation checked by a
qualified electrician.
OUTLET PLUG
iMPROPER GROUNDING CAN RESULT tN
ELECTRICAL SHOCK= IN THE EVENT OF A
SHORT CIRCUIT, GROUNDING REDUCES
THE RiSK OF SHOCK BY PROViDiNG AN
ESCAPE WiRE FOR THE ELECTRIC CUR- Terminal
RENT, THIS A_R COMPRESSOR MUST BE
PROPERLY GROUNDED. G_'ounding ]/
Pin //
1. The air compressor is equipped with a cord having a
grounding wire and an appropriate grounding plug=
The plug must be used with an outlet that has been
installed and grounded in accordance with alt local Breakqn Procedures
codes and ordinances. The outlet must have the
same configuration as the plug. DO NOT USE AN
ADAPTER.
2. Do not modify the plug that has been provided. If it Serious damage may result if the following
does not fit the available outlet, the correct outlet break=in instructions are Rot closely
should be installed by a qualified electrician. followed.
3. Inspect the plug and cord before each use. Do not use
the compressor if there are signs of damage. This procedure is required only once, before the air com-
pressor is put into service.

1. Set the pressure switch lever to the "OFF" position.

ELECTRICAL SHOCK HAZARD. WHEN 2, Plug the power cord into the correct branch circuit
REPAmRING OR REPLACING THE CORD OR receptacle.
PLUG, KEEP THE GROUNDING W_RE SEPA- 3. l_drn the regulator clockwise opening it fully, to prevent
RATE FROM THE CURRENToCARRYmNG air pressure build-up inthe tank.
W_RES. NEVER CONNECT THE GROUND- 4. Move the pressure switch lever to "ON/AUTO". The
gNG W_RE TO A FLAT BLADE PLUG TER= compressor witl start.
MINAL, (THE GROUNDING W_RE HAS 5. Run the compressor for 30 minutes. Make sure the
INSULATION WITH AN OUTER SURFACE regulator is open and there is no tank pressure build-
THAT IS GREEN - WSTH OR W_THOUT YEL- up.
LOW STRIPES.) 6. After 30 minutes, close the regulator by turning it
counter-clockwise. The air receiver wilt filt to cut-out
pressure and the motor wilt stop. The compressor is
now ready for use.
OPERATING PROCEDURES
1. Before attaching an air hose or accessory', make 4, ]_Jrn the pressure switch lever to the "ON-AUTO"
sure the pressure switch lever is in the "OFF" posi- position and allow tank pressure to build. The motor
tion. Close the air regulator outlet by turning it win stop when tank pressure reaches cut-out
counter-clockwise. pressure.
5. Open the regulator by turning it clockwise. Adjust the
regulator to the correct pressure setting. (See pg. 6
for regulator instructions.) Your outfit is ready for use.

TOO MUCH AmR PRESSURE CAUSES A

HAZARDOUS R_SK OF BURSTING, CARE_
FULLY FOLLOW STEPS 3 THROUGH !2 When You Are F_nished:
EACH TmMETHE COMPRESSOR IS USED,
6. Set the pressure switch lever to "OFF".
3. Check the manufacturer's maximum pressure rating 7. qFdrnthe regulator counter-clockwise and set the out-
for air tools and accessories. The reguator outlet let pressure to zero.
pressure must never exceed the maximum pressure 8. Remove the air tool or accessory.
rating. 9. Open the regulator and allow the air to sowly bleed
from the tank. C_ose the regulator when tank pres _
sure is approximately 20 psi.
Compressed air from the outfit may certain 10. Drain water from air tank.
water condensation and oH mist. Do not
spray uRfi_tered air at aR item that coutd be
damaged. Some air operated toots or
devices may require filtered air, Read the s
 NOTE

If the drain cock valve is plugged, release all air

W'_TER WILL CONDENSE IN THE A_R TANK. pressure. The valve can then be removed,
mFNOT DRAtNED_ WATER W_LL CORRODE Scleaned, and reinstalled.
AND WEAKEN THE AR TANK; CAUSING A
R_SK OF AIR TANK RUPTUREo 12. After the water has been drained, close the drain
1!. With tank pressure at approximately 20 psi., open cock (turn clockwise). The air compressor can now
the drain cock (key 43, pg. 14) and atlow moisture to be stored.
drain. Turn drain T-handle counterclockwise to open.
The drain cock is located under the outfit near the
teg without the wheefs. (See pg. 6.)
MAINTENANCE

UNF CYCLES AUTOMATtCALE#f WHEN POWER _SON. WHEN DOING MA_NTENANCE_ YOU MAY
BE EXPOSED TO VOLTAGE SOURCES, COMPRESSED A_R OR MOVING PAR'TS. PERSONAL
_NJURtES CAN OCCUR. BEFORE PERFORMING MAINTENANCE OR REPAIR UNPLUG THE UNiT
AND BLEED OFF ALL A_R TANK PRESSBREo NEVER OPERATE THE UNiT WITH THE BELT
GUARD REMOVED°
Air Compressor ounces.) Under extreme winter conditions use SAE
A clean air compressor runs cooler and provides longer 10W. Multi-viscosity oil (10W30) will leave carbon
service. Clean or blow off fins and any other parts of the deposits on critical components which wil! reduce per-
air compressor that collect dust or dirt. Do not place formance and compressor life.
rags, containers or other material on or against the venti- Check Valve - Replacement
lation openings in the belt guard. Adequate ventilation is
1. Release air pressure from the air tank.
necessary to maintain proper air compressor operating
2. Loosen the top and bottom tube nuts and remove the
temperature. outlet tube.

Air Filter - _nspection and Repmacement 3. Unscrew the check valve (turn counter-clockwise)
using socket wrench.
NOTE 4. Check that the valve disc moves freely and that the
spring holds the disc in the upper, closed position.
The check valve may be cleaned with a solvent such
Keep the air filter clean at afl times. Do not oper-
as paint thinner or carburetor cleaner.
ate the compressor with the air filter removed.
5. Apply sealant to the check valve threads. Reinstall the
check valve (turn clockwise). Do not over tighten.
A dirty air filter will not allow the compressor to operate
at full capacity. Before you use the compressor, check 6. Replace the outlet tube and tighten top and bottom
tube nuts.
the air filter to be sure it is clean.
Safety Valve - _nspection
If it is dirty, repIace it with a new filter. The filter may be
removed by using a pair of needle nosed pliers or a
[
screwdriver. Pull or pry out the old filter. Push in the new
air filter.
_F THE SAFETY VALVE DOES NOT WORK
OH - Checking and Changing PROPERLY OVERoPRESSUR_ZAT_ON MAY
OCCUR, CAUSING A_R TANK RUPTURE OR
EXPLOSION. OCCASIONALLY PULL TNE
R_NG ON THE SAFETY VALVE TO MAKE
Overfilling with oim win cause premature SURE THAT TNE SAFETY VALVE OPEN°
compressor failure. Do not overfill. ATES FREELY. _F THE VALVE _S STUCK OR
DOES NOT OPERATE SMOOTHLY, IT MUST
Check oil tevel in the crankcase daily. Remove the oil fill BE REPLACED W_TN A VALVE HAVING THE
plug (Key no. 81, pg. 15). The oil level should be even SAME PRESBURE R_[_NG_
with the top of the fill hole and must not be allowed to be
lower than %" from the top (6 threads) at any time. It is Motor
recommended that the oil be changed after every 100 The motor has a manual thermal overload protector. If
hours of operation. To drain the oiI, remove the oil drain the motor overheats for any reason, the overload protec-
ptug and collect the oil in a suitable container. Be sure to tor will shut off the motor. The motor must be altowed to
replace the ptug securely before adding new oil. Use a cool down before restarting. _Jrn the unit off. To restart,
special compressor oil such as Sears 9q6426 or SAE depress the red reset button located on the end of the
20-20W SF motor oil. (Crankcase oil capacity is 16 fluid motor and turn the unit on.

0
 NOTE 2. Remove thefrontofthebeltguardbydisengaging the
snaps.Inserta flatbladedscrewdriver ateachsnap
Iftheoverloadprotector shutsthemotorofffre- Iocationand pry the bettguard apart.
quently,checkfora possiblevoltageproblem 3. The motor is mounted on a special base, By ioosenin9
Lowvoltagecanalsobesuspected when: the wing nut at the motor hold down ptate, the motor
1.the motordoesnot get upto fulIpoweror can be tilted to allow for easy removal of the belt.
speed; 4. Remove belt and replace.
2. fusesblowoutwhenthemotorisstarted.
3. lightsdimwhenmotorisstarted,andremain NOTE
dimwhileit is running.
The belt must be centered over the grooves on
the flywheel and motor pulley.

5. Tighten the wing nut until it makes contact with the

washer plus one additional turn.
6. Replace the front of the beltguard.
Be_t - Replacement
To Adjust Be_t Tension:
Tighten the wing nut until it makes contact with the
washer plus one additional turn.

SERIOUS _NJURY OR DAMAGE MAY Pulley and Flywheem = Alignment

OCCUR _FPARTS OF THE BODY OR LOOSE The compressor flywheM and motor puIley grooves
_TEMS GET CAUGHT IN MOVING PARTS. must be in-line (in the same plane) within 1/32" to assure
NEVER OPERATE THE OUTFIT WITH THE belt alignment within grooves. To check alignment, dis-
BELT GUARD REMOVED, THE BELT GUARD connect electrical power and remove the beltguard.
SHOULD BE REMOVED ONLY WHEN THE Place a straightedge against the outside of the flywheel
CO_4PBESSOB _S UNPLUGGED, and measure the distance from it to the nearest groove.
Alignment is achieved when the other end of the straigh-
To Replace Belt: tedge is within 1/32" of the measured dimension at the
f. Unplug compressor. pulley grooves.

STORAGE
Before You Store The Air Compreseor: 3. Remove the air tool or accessory.
4. Protect the electrical cord and air hose from damage
1. Review the "Maintenance" section on the preceding (such as being stepped on or run over}. Wind them
page and perform maintenance as necessary. Drain loosely around the outfit handte,
the water from the air tank. 5. Store the compressor in a clean and dry location.
2. Set the OFF/AUTO switch to the "OFF" position, and
unplug the unit.
TROUBLESHOOTING GUIDE

PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES_ MOVING PARTS_ OR COMPRESSED

A_R SOURCES PERSONAL _NJURY MAY OCCUR. PRIOR TO ATTE_IPT_NG ANY REPAIRS THE
COMPRESSOR MUST BE UNPLUGGED, AND A_R TANK PRESSURE REUEVED° NEVER OPERATE
THE UNiT W_TN THE BELT GUARD REMOVED°

PROBLEM CAUSE CORRECTION

Excessive tank pressure - Pressure switch does not shut off Move the pressure switch lever to the "OFF" posi-
safety valve pops off. motor when compressor reaches tion. If the outfit doesn't shut off, and the ebctricai
"cut-out" pressure. contacts are welded together, replace the pressure
switch.

If the contacts are good, check to see if the pin in

the bottom of the pressure retief vane is stuck, if it
does not move freely, reptace the valve.

Pressure switch "cut-out" too Return the outfit to the Sears Service Center to
high. check and adjust or replace switch.

Air leaks at fittings "Tubefittings are not tight enough. Tighten fittings where air can be heard escaping.
Check fittings with soapy water solution. DO NOT
OVER-TIGHTEN.
 TROUBLESHOOTING GUIDE (continued)

PROBLEM CAUSE CORRECTION

Air leaks at check valve Defective or dirty check valve. A defective check valve results in a constant air
teak at the pressure reiease valve when there is
pressure in the tank and the compressor is shut off.
Remove and clean, OFreplace check valve. DO
NOT OVER-TiGHTEN.

Air leaks at pressure Defective pressure switch Remove and replace the release valve.
switch release valve release valve.

Defective check valve. A defective check valve results in a constant air

leak at the pressure release valve when there is
pressure in the tank and the compressor is shut off.
Remove and clean, or replace check valve. DO
NOT OVER-TIGHTEN.
Air leaks in air tank Defective air tank. Air tank must be replaced. Do not repair the leak.

DO NOT DRILL mNTO, WELD, OR OTHER-

W_SE MODIFY AIR TANK OR mT WILL
WEAKEN.

Air leaks from safety valve Possible defect in safety valve Operate safety valve manually by pulling on ring. ff
valve still leaks, it should be replaced.
Regulator knob - continu- Dirty or damaged regulator inter- Clean or replace regulator, or internal parts.
ous air leak. Regulator will nat parts.
not shut-off at air outlet.

Knocking noise Defective check valve. Remove and clean, or replace.

Loose pulley. Tighten pulley set screw, (70-80 In.-Lbs.).

Low oil level. Maintain prescribed oil level. Add oil

Loose flywheel. Tighten screw. 15 to 20 ft. lbs.

Loose compressor mounting Check screws. Tighten as required, (15-20 Ft.-

screws. Lbs.).

Loose belt. Tighten wing nut on motor mount until it contacts

the washer, plus one more turn.

Carbon build up. Remove the head and valve plate. Clean the valve
plate and the top of the piston. (Be sure carbon
does not fall into the cylinder.) Reassemble using
new gaskets and torque screws, 25 to 30 ft. Ibs.
Compressor is not supply- Prolonged excessive use of air. Decrease amount of air usage.
ing enough air to operate
accessories. Compressor is not large enough Check the accessory air requirement, ff it is higher
for air requirement. than the SCFM or pressure supplied by your air
compressor, you need a larger compressor.

Restricted air intake filter. Clean or replace air intake filter. Do not operate the
compressor in the paint spray or sand blasting
area.

Hole in hose. Check and replace.

Check valve restricted. Remove and ctean, or replace.

Air leaks. Tighten fittings. (See Air Leaks section of

Troubleshooting Guide, Pg. tl.)
2
 TROUBLESHOOTING GUIDE (continued)

PROBLEM CAUSE CORRECTION

Excessive belt wear Loose belt, Adjust tension. See Belt Replacement, pg, 11.

Tight belt. Adjust tension. See Belt Replacement, pg. 11.

Loose pulley_ Check for worn keyway or pulley bore. Also check
for bent motor shaft. Replace parts if necessary.

Pulley misalignment. Motor pulley and flywheel must be in line within

1/32".

Squealing sound Loose belt. Adjust tension. See Belt Replacement, pg. 11.

There is no oii in the compressor. Add oi!.

Motor wilt not run Motor overload protection switch Let motor cool off end reset switch by pressing the
has tripped, red button located on the end of the motor.

Possible defective capacitor. Return to Sears Service Center for inspection or

replacement if necessary.

Tank pressure exceeds pressure Motor will start automatically when tank pressure
switch "cut-in" pressure. drops below "cut-in" pressure of pressure switch.

Wrong gauge wire or length of Check for proper gauge wire and cord length.
extension cord,

Check valve stuck open. Remove and clean, or replace. DO NOT OVER-
TIGHTEN.

Loose electrical connections. Unplug the compressor. Check wiring connection

inside pressure switch and motor terminal box
area.

Paint spray on internal motor Have checked at Sears Service Center. Do not
parts. operate the compressor in the spray area.

Possible defective motor. Have checked at a local Sears Service Center.

Fuse blown, circuit breaker 1. Check fuse box for blown fuse and replace if
tripped. necessary. Re-set circuit breaker. Do not use a
fuse or circuit breaker with higher rating than
that specified for your particular branch circuit.
2. Check for proper fuse; onty Buss Fusetron Type
"T" fuses are acceptable.
3. Check for low voltage conditions and/or proper
extension cord.
4. Remove check valve and clean or replace if it is
stuck open or closed.
5. Disconnect the other electrical appliances from
circuit or operate the compressor on its own
branch circuit.

Pressure release valve on pres- Bleed the line by pushing the lever on the pressure
sure switch has not unloaded switch to the "OFF" position; if valve does not
head pressure, open, replace it.

Pressure reading on the It is normal for "some" pressure If there is an excessive amount of pressure drop
regulated pressure gauge drop to occur, when the accessory is used, adjust the regulator
drops when an accessory is following the instructions on pg. 6.
used.
Note

Adjust the regulated pressure under flow

conditions (while the accessory is being
used).
 AIR COMPRESSOR DtAGRAM
(view from back}

2
I7

14
12

54 55
\
53

52

"58

!8 34 51A
_J
5O 35

48

(Model No. shown here)

"43
\

42

4!

(See pg. 8, Step 2 for proper

wheel placement and assembly)

14
 COMPRESSOR PUMP D_AGRAM

89

82

(od "Ill p ugl

83
/
/
/

_o_,dra,n plug}

_5
r
PARTS LiST
KEY
NO PART NUMBER DESCRIPTION
f CAC=322 Belt guard, outside
2 CAC_323 Belt guard, inside
3 SSF-8113-ZN Lock nut
4 CAC-327 Bracket
5 CACo4OG3-1 Compressor pump assembly
includes Key No. 59 through 93 inclusive.
6 9=16279 intake filter - package of 2 (1 used)
7 265-18 Filter retainer
8 SSF-935 Screw, #8-32 x 3/8" (2 used)
9 LA-1779 Hot Surface Labem(2 used)
10 STD575051 Ferrule (2 used for 1/2" O.D. Tube)
11 STD575050 Nut (2 used for 1/2" O.D. Tube)
12 CAC-317 Outlet tube
13 TIA-4325 Safety valve (model 919.176730)
TIA-4125 Safety valve ASME (model 919.17683D)
14 C-GA-345 Pressure gauge (2 used)
15 STD575026 Ferrule (2 used for 1/4" O.D. Tube)
16 STD575025 Nut (2 used for 1/4" O.D. Tube)
17 CAC-387 Pressure release tube
18 CAC-1012 Hold down p|ate
t 9 CAC-4296 Pressure regulator
20 H-2099 Adapter
21 SS-2071 Nipple
22 CAC-1913 Held down screw
23 SSo3222-CD Pipe plug
24 CAC-366 Manifold
25 SUDL-403-1 Cord assembty
26 SSW-7367 Strain relief (2 used)
27 LA-1531-1 Label
28 CAC=4220-1 Pressure switch
28A KK-4315 Pressure release valve and mounting nut (included with #28)
29 CAC=4215-1 Motor cord assembly
30 SS=1287 Nipple
31 CAC=437 Check valve
32 SSF-928 Screw 5/16"-18 × 7/8" (4 used)
33 STD54163t Wing nut
34 LA-1535 Warning labe_
35 CACo320 Handle
36 LA-1814 Periodic maintenance mabel
37 LA-1932-2 Specification label (Model 919.176730)
LA-1933 Specification |abel (Model 919.176830)
38 CAC-1059 Retaining clip (2 used)
39 SUDL-6=I Rubber foot strip
40 CAC=60 Shoulder bolt (2 used)
41 CAC-4293 8" wheel (2 used)
42 STD541437 Lock nut (2 used)
43 SS-2797 Drain cock
44 Not Available Code number label
45 TA_4099 Air tank, 20 gallon (Modei 919.176730)
TA=4072 Air tank, 26 gallonASME (Model 919.176630)
45 LA-1555 Labe_- 12gV wired
47 CAC-287 Motor pin
48 LA-181 f-1 Sears Craftsman mabeJ
49 MO=8340 Motor, 3 HP
50 C-PU-2885 Motor pulley
51 SS-391 Set screw
5t A LA=f 978 Drain Tank Daily LabeB
52 STD580104 Motor shaft key (3/16" × 3/16" × 1¼")
53 SSF=986 Self-t_pping screw (2 used)
54 LA=1931 Label
 55 C-BT-222 Pomy=V=Belt, 38" long
56 SSN°1619oZN Lock washer
57 SSN=56=ZN Fiat washer
58 CAC-1011 E_aetomer spring
59 SSFo6627 Stud 3/8" × 36 both ends (2 used}
60 CAC-293 Head
61 SSF-955 Screw, 3/8"=16 × 1=1/2" t4 used)
62 SS=8553 Adapter
($3 SSP=940t Adapter
_/ 84 CAC=291 Head gasket
O 65 265-25 intake flapper valve = squcre corners I
(2 used on head)
66 SSF-9821 Screw #5=40 × %" (8 used)
67 CACo294 Restrictor plate f2 used)
68 265=196 E×hcust fgspper valve o beveled corners I_
(2 used on veJve p_ate)
69 CA0-289 Valve plate
70 CAC-54_1 Valve plate gasket
71 CAC-56 Compression ring (4 used)
,Q=72 CAC-58 Oi_ ring (4 used)
,_ 73 CAC=57 OiJ ring expsnder (2 used)
74 CAC-55 Piston (2 used)
75 265ol 9 Piston pin (2 used)
76 CAC=207 Piston pin plug (4 used)
77 265o410 Connecting rod aasembty (2 used) includes two SSFo927 screws, Key #78.
78 SSF-927 Screw, 1/4"-20 x %t/8" !4 used)
79 CAC-51 Crankcase and cyiinder
80 265=41 Needle bearing
81 SSP-1413 Pipe pmug (2 used)
82 SSF=925 Screw, 1/4"-20 x 7/8" (] 2 oaed)
83 265-3 Base
84 265-16 Base gasket
85 CAC=373 Crankshaft
88 265-23 Needle bearing
87 265-13 End ptate gasket
88 265-9 End PIste
89 265=2 Flywheel
90 SSN=1014=ZN BelleviHe washer
91 STD523107 Cap screw
92 265=11 t Seal
93 265=5 Vent filter

NOTmLLUSTRATED
9-16259 Airchuck
9-16153 Airhose assembly(1/4"LD.×15')
SI-30_14o4-D Owners manuat

_= Key No. 71, 72 and 73, only available in Ring Kit KK-4313
J Key No. 6, 84, 70, 84, 87, 92 and 93, available as individuaD parts end part of Gasket Kit KK=4312-2_
O Key No. 65, 65 and 68, on{y svaitabJe in Veive Kit KK-4275.
 OWNERS CRAFTSMAN AIR COMPRESSOR
MANUAL

SERVICE Now that you have purchased your Sears Air Compressor, should a
need ever exist for repair parts or service, simply contact any Sears
Service Center and most Sears, Roebuck and Co. stores. Be sure
to provide all pertinent facts when you call or visit.

MODEL NO. The model number of your Sears Air Compressor is 919
919.176730 This number can be found on the maintenance label which is
located on the rear of the air tank.
919.176830

HOW TO ORDER WHEN ORDERING REPAIR PARTS, ALWAYS GIVE THE

REPAIR PARTS FOLLOWING INFORMATION:

• PART NUMBER • PART DESCRIPTION

, MODEL NUMBER • NAME OF ITEM

If service or repair parts are required for the motor, supply all motor
nameplate information including manufacturers name.

All parts listed may be ordered from any Sears Service Center and
most Sears stores.

If the parts you need are not stocked locally, your order will be elec-
tronically transmitted to a Sears Repair Parts Distribution Center for
handling.

Sears, Roebuck and Co., Chicago, _L 60684 U.SoAo

SI-30-14-4-D 6/89 Printed in U.S.A,