9U-5132 Timing and Fuel System Setting Tool Group
9U-5132 Timing and Fuel System Setting Tool Group
9U-5132 Timing and Fuel System Setting Tool Group
Page 1 of 33
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Product: TRUCK
Model: 773E TRUCK ASK01332
Configuration: 773E Off-Highway Truck ASK00001-UP (MACHINE)
i05891103
Introduction
European Union Compliant, CE Marked
Illustration 1 g02139237
Think Safety
Most accidents that involve product operation, maintenance, and repair are caused by failure to
observe basic safety rules or precautions. An accident can often be avoided by recognizing
potentially hazardous situations before an accident occurs. A person must be alert to potential
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hazards. This person should also have the necessary training, skills, and tools to perform these
functions properly.
Do not operate or perform any lubrication, maintenance, or repair on this product until you
have read and understood the operation, lubrication, maintenance, and repair information.
Safety precautions and warnings are provided in this manual and on the product. If these hazard
warnings are not heeded, bodily injury or death could occur to you or to other persons.
The hazards are identified by the Safety Alert Symbol and followed by a Signal Word such as
"DANGER","WARNING", or "CAUTION". The Safety Alert "WARNING" label is shown
below.
A non-exhaustive list of operations that may cause product damage are identified by "NOTICE"
labels on the product and in this publication.
Caterpillar cannot anticipate every possible circumstance that might involve a potential
hazard. The warnings in this publication and on the product are therefore, not all inclusive.
If a tool, procedure, work method, or operating technique that is not recommended by
Caterpillar is used, the operator must be sure that the procedures are safe. The operator
must also be sure that the product will not be damaged or made unsafe by any unspecified
procedures.
The information, specifications, and illustrations in this publication are based on information that
was available at the time that the publication was written. The specifications, torques, pressures,
measurements, adjustments, illustrations, and other items can change at any time. These changes
can affect the service that is given to the product. Obtain the complete and most current
information before you start any job.
When replacement parts are required for this product, Caterpillar recommends using Cat
replacement parts or parts with equivalent specifications including, but not limited to
physical dimensions, type, strength, and material.
Literature Information
This manual contains safety information, operation instructions and maintenance information and
should be stored with the tool group.
Some photographs or illustrations in this publication may show details that can be different from
your service tool. Guards and covers might have been removed for illustrative purposes.
Continuing improvement and advancement of product design might have caused changes to your
service tool, which are not included in this publication.
Whenever a question arises regarding your service tool or this publication, consult Dealer Service
Tools (DST) for the latest available information.
Safety Section
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Read and understand the basic precautions listed in the Safety Section before operating or
performing maintenance and repair on this service tool.
The General Information Section describes tooling functions and features. This section provides
useful information on individual parts, additional tooling, and resources.
Operation Section
The Operation Section is a reference for the new operator and a refresher for the experienced
operator.
Photographs and illustrations guide the operator through correct procedures for using the tool
group.
Operating techniques outlined in this publication are basic. Skill and techniques develop as the
operator gains knowledge of the service tool and tool capabilities.
Maintenance Section
The Maintenance Section is a guide to tool inspection, cleaning, storage, and tool disposal.
Safety Section
Safety Icon Nomenclature
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Illustration 2 g02166423
Hazard Avoidance
Pinch Point
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Illustration 3 g03336830
Table 1
9U-5132 Timing Tool Group
Item Part No. Description
1 1U-8869 (3) Digital Dial Indicator
2 9U-6273 (3) Rod Sleeve Extension
3 9U-6272 (3) Nylon Screw
4 5P-8414 (3) Clamp Collet
5 136-4588 (3) Collet Extension
6 122-0449 (3) Rod Sleeve Extension
7 136-4587 (3) Collet Extension
8 6V-3075 Dial Indicator, Metric
9 9U-5137 (2) Timing Fixture
10 5P-7276 Container
11 5P-7263 Contact Point, 76.2 mm (3.0 in)
Contact Point,
12 9S-8883
12.7 mm (.50 in)
13 4C-8753 Extended Collet
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Crankshaft Positions for Unit Injector Lash and Valve Lash Settings
Table 2
Chart A
Standard Rotation (Counterclockwise) As Viewed from Flywheel End
Cylinders to Check/Adjust
Correct Stroke for No. 1
Engine Intake Valves Exhaust
Piston at Top Center Position Injectors
(1) Valves
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Chart B.
Reverse Rotation (Clockwise) As Viewed From Flywheel End
Cylinders to Check/Adjust
Compression 1-3-4-8 1-2-7-8 2-5-6-7
3508
Exhaust 2-5-6-7 3-4-5-6 1-3-4-8
1-3-4-6-7-12 2-5-8-9-10-11
Compression 1-4-5-8-9-12
3512
2-5-8-9-10-11 2-3-6-7-10-11 1-3-4-6-7-12
Exhaust
Table 3
Chart C.
(1)
Dial Indicator Setting Chart
Fuel Timing Dimension in Millimeters Dial Indicator Setting In Millimeters
88.28 +1.28
88.07 +1.07
87.85 +0.85
87.64 +0.64
87.43 +0.43
87.21 +0.21
87.00 +0.00
86.79 -0.21
86.57 -0.43
86.36 -0.64
86.15 -0.84
85.93 -1.07
85.72 -1.28
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(1)
Refer to Fuel Setting and Related Information Fiche for the correct timing dimension to use.
Start-up Procedure
Use the following procedure in order to start an engine following fuel system or governor repair:
Excessive suction can pull the plate quickly against the air inlet opening.
To avoid crushed fingers, do not put fingers between plate and air inlet
opening.
3. Place a service person in position near each turbocharger air inlet. Equip the service person
with a piece of steel plate. Each piece of steel plate must be large enough to cover each
turbocharger air inlet.
4. Start the engine. If the engine starts to run too fast or the engine runs out of control,
immediately activate the emergency stop button. Also, place the steel plates against the
turbocharger air inlets. The plates will stop the air supply to the engine, and the engine will
stop.
Tooling
All tools listed are included with 9U-5132 Tool Group, except as noted.
Table 4
Chart A.
9U-5132 Timing and Fuel System Setting Tool Group for MUI Engines
Part No. Description
5P-4160 (1) Contact Point, 19 mm (for digital indicator)
8S-3675 Contact Point, 3 mm
9S-9082 (1) Engine Turning Tool
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Note: Some technicians prefer to secure the dial indicator with the 5P-4814 Clamp Collet, instead
of the nylon screw. Parts have been made available for this purpose. In place of 9U-6273 Rod
Sleeve Extension, order and use 136-4587 Collet Extension. This extension accepts the 5P-4814
Clamp Collet. Use two 6V-7918 Wrenches (or 5/8 inch open-end wrenches) to tighten the collet
on the indicator stem.
NOTICE
Refer to the "Crankshaft positions For unit Injector Lash and Valve Lash Setting" chart in this
manual and put the engine in time. With the two crankshaft positions given in the chart, all of the
injectors can be checked or adjusted. This will make sure that the push-rod lifters are off the lobes
and on the base circles of the camshafts.
Refer to the "Fuel Setting Adjustment" in this manual for the correct fuel timing dimension to use.
The range of timing dimensions are given in the "Dial Indicator Setting" chart in this manual.
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Illustration 4 g00322956
1. The digital dial indicator must be programmed to read actual timing dimensions. Since the
9U-5138 Setting Gauge in the timing and fuel setting tool group is 87.00 mm (3.4252 inch),
set the digital dial indicator for 87.00 mm (3.4252 inch). Use the following steps in order to
program the indicator to read 87.00 mm (3.4252 inch).
c. A negative "-" sign should be in the display window under "REV". If that space is
blank, push the "+/−" button so the display shows a negative "-" sign. When this is
done, the movement of the plunger into the indicator will be displayed. The display
will be shown as a negative movement. The movement of the plunger out of the
indicator will be displayed as a positive movement.
d. Push the preset button and hold the preset button down until there is a flashing "P" in
the upper right corner of the display. Then release the button.
e. Push the preset button and hold the preset button down until the flashing "P"
disappears and a flashing indicator bar is seen in the lower left corner of the display.
Then release the button. Use the preset button so that this position is blank.
f. Push the preset button and hold the preset button down until the flashing indicator
begins flashing under the first number position. The first number position is located in
the fourth position to the left of the decimal. Then release the button. Momentarily
pushing the preset will cause the display number in that position to change. Use the
preset until this position reads zero (0).
g. Use the preset button to move the flashing indicator and change the display numbers
until the display shows 87.00 mm (3.4252 inch). Push the preset button and hold the
preset button until the flashing "P" is shown in the upper right corner of the display.
Release the preset button. Momentarily push the preset button so the flashing "P" and
the zeroes to the left of 87.00 mm (3.4252 inch) disappear.
h. The indicator can now be turned off. The indicator will retain the preset number in
memory. To recall the preset number, repeat Steps 1.a through 1.d.
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3. Install the indicator into the 9U-5233 Magnetic Fixture Group . Leave the collet loose.
Illustration 5 g00323023
4. Place the fixture and the indicator on the 9U-5138 Setting Gauge with the extension rod of
the bracket on the step of the gauge. Position the indicator in the bracket so that the
indicator plunger can travel adequately. Tighten the collet.
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Illustration 6 g00323029
6. Momentarily push the preset button on the digital dial indicator in order to stop the "P" in
the upper right-hand corner from flashing. The display should show 87.00 mm (3.4252
inch). Place the 1U-8869 Dial Indicator and the 9U-5233 Magnetic Fixture Group in the
correct position on the injector. Make sure that the magnetic base of the timing fixture is on
the top surface of injector follower (4). The extension rod rests on the top surface of
shoulder on fuel injector body (5) .
Note: The top surfaces of injector follower (4) and shoulder on fuel injector body (5) must
be clean and dry for accurate readings.
7. The digital dial indicator should now read the actual fuel timing dimension of the injector
that is being checked.
8. No adjustment is necessary if the dial indicator reads the correct fuel timing dimension.
Refer to the TMI (Technical Marketing Information) for the engine that is being checked.
Proceed to Step 13.
9. If the dial indicator does not read the correct fuel timing dimension or the desired fuel
timing dimension, proceed with Steps 10 through 13.
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10. Ensure that the 1U-8869 Dial Indicator and the 9U-5233 Magnetic Fixture Group are in the
correct position on the injector. Loosen the locknut for the pushrod adjustment screw.
11. Turn the adjustment screw until the desired fuel timing dimension is read on the digital dial
indicator.
Note: Turning the adjustment screw clockwise will lower the fuel timing dimension.
Turning the adjustment screw counterclockwise will increase the fuel timing dimension.
Tighten the adjustment screw locknut to a torque of 70 ± 15 N·m (50 ± 11 lb ft) and check
adjustment again. If necessary, repeat the procedure until the adjustment is correct.
12. Remove the timing bolt from the flywheel when the fuel timing check is completed.
13. Turn the flywheel by 360 degrees in the direction of normal engine rotation. Install the
timing bolt for the flywheel. Repeat the procedure for the other half of the engine.
Illustration 7 g03712647
Table 5
443-4177 Parts List
No. Quantity Part No. Name
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• Low height tool used on No. 2 Cylinders or injector adjustment on MT4400 Trucks
• Used to test and adjust fuel systems, including fuel timing, rack synchronization, and fuel
setting
Specifications
Table 6
Length 155 mm (6.10 in)
Width 40 mm (1.57 in)
Weight 0.18 kg (.40 lb)
Refer to TMI (Technical Marketing Information) for the correct fuel setting for the engine that is
being checked.
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Illustration 8 g03401931
1. Install the 8S-3675 Indicator Contact Point onto the dial indicator stem.
2. Install Sleeve Extension (5) in the small diameter tube of Timing Fixture (2). Place Rod
Assembly (6) in Sleeve Extension (5) .
4. Put Dial Indicator (1) and Timing Fixture (2) onto the Set Gauge (3). The Timing Fixture
(2) should be on the top surface of the Set Gauge (3) with the Rod Assembly (6) on the
bottom 87.00 mm (3.4252 inch) step.
5. Move the Dial Indicator (1) in the Sleeve Extension (5) until both needles indicate zero.
Tighten Nylon Screw (4). The dial indicator has now been zeroed to a standard fuel timing
dimension of 87.00 mm (3.4252 inch).
Note: Some Dial Indicators (1) have a 0.25 mm (0.010 inch) smaller diameter extending
about 4.0 mm (0.158 inch) up from the end of their stems. When zeroing these indicators in
the bore of the 122-0449 Rod Sleeve Extension the Nylon Screw (4) will contact the
indicator stem on this step. This can cause the indicator to cock in the bore and result in
incorrect readings. It is recommended that the 136-4587 Collet Extension and 5P-4814
Collet Clamp be used with these "stepped" indicator or that the 1U-8869 Dial Indicator be
used.
6. Subtract 87.00 mm (3.4252 inch) (gauge dimension) from the desired fuel timing dimension
(obtained from (TMI) Technical Marketing Information)
Note: To obtain a positive indicator setting, move the indicator downward. This will move
the large needle clockwise or in the positive direction increasing the fuel timing dimension
from 87.00 mm (3.4252 inch).
To obtain a negative indicator setting, move the indicator upward. This will move the large
needle counterclockwise or in the negative direction decreasing the fuel timing dimension
from 87.00 mm (3.4252 inch).
Subtract 87.00 mm (3.4252 inch) from the desired fuel timing dimension 87.50 mm
(3.4449 inch).
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In this case loosen Nylon Screw (4) and move the dial indicator downward until the
indicator reads a positive 0.50 mm (0.0197 inch). Then tighten the Nylon Screw (4)
again.
Subtract 87.00 mm (3.4252 inch) from the desired fuel timing dimension 86.20 mm
(3.3937 inch).
In this case loosen Nylon Screw (4) and move the dial indicator upward until the
indicator reads negative 0.80 mm (0.03150 inch). Then tighten the nylon screw again.
Illustration 9 g03402357
7. Make sure the top surfaces of (7) and (8) are clean and dry.
8. Put Dial Indicator (1) and Timing Fixture (2) in position on the injector to be checked.
Make sure that the magnetic base of the timing fixture is on top surface of Injector Follower
(7) and the extension rod is on the top surface of Injector Shoulder (8) .
9. The dial indicator pointers must indicate 0.00 ± 0.20 mm (0.00000 ± 0.0079 inch)
10. If the dial indicator pointers indicate zero or are within the tolerance given in 8, no
adjustment is necessary. Proceed to step 13.
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11. If the dial indicator pointers do not indicate 0.00 ± 0.20 mm (0.00000 ± 0.0079 inch),
continue with step 11 through step 13.
Illustration 10 g03402450
12. Loosen the push rod adjustment screw locknut for the injector to be adjusted.
13. Turn the adjustment screw until zero is read on the dial indicator.
Note: If the dial indicator reading is greater than 0.00 ± 0.20 mm (0.00000 ± 0.0079 inch),
then turn the adjustment screw counterclockwise (CCW). If the dial indicator is less than
0.00 ± 0.20 mm (0.00000 ± 0.0079 inch), then turn the adjustment screw clockwise (CW).
14. Tighten the adjustment screw locknut to 70 ± 15 N·m (51.63 ± 11.06lb ft). If necessary,
repeat procedure until the adjustment is correct.
15. Rotate engine, re-pin the flywheel, and repeat the procedure for the other half of the engine
that has not yet been adjusted.
Table 7
Tools Needed
8T-2684 Rack Synchronization Gauge 1
Injector synchronization is the setting of all fuel injector racks to a reference position. This ensures
that each injector gives the same amount of fuel to each cylinder. Injector synchronization is done
by setting each fuel injector rack to the same position while the control linkage is in a fixed
position. Use the following procedure for the adjustment of injector synchronization:
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Illustration 11 g00323443
(1) Plug
(3) Cover
1. The top bolt that holds the cover (3) in position is the synchronization pin (2). Remove the
synchronization pin (2) and plug (1) from the front drive housing. DO NOT destroy the seal
or remove cover (3) .
2. Remove the washer from the synchronization pin. Remove the plug and install the
synchronization pin into the threaded hole. Tighten the synchronization pin.
Illustration 12 g00323444
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3. Turn the governor or the actuator terminal shaft to the fuel ON position. The flat face of fuel
stop lever (4) will contact synchronization pin (2). This is the synchronizing position or zero
reference point. Hold the control linkage in this position when the injectors are adjusted.
Illustration 13 g00323446
5. With the fuel stop lever against the synchronization pin, put the 8T-2684 Rack
Synchronization Gauge (5) on the round part of the fuel injector rack between the fuel
injector body and the end of the rack. Use a screwdriver and make an adjustment of control
rod (6). Turn the screw that is located on the control rod one click at a time until the 8T-
2684 Rack Synchronization Gauge fits between the fuel injector body and the shoulder at
the end of the rack. Remove the screwdriver from the control rod so that no pressure
remains on the linkage. Check the setting with the rack synchronization gauge. Any
pressure on the linkage with the screwdriver will not give a correct indication when the
setting is checked with the rack synchronization gauge. Ensure that the linkage is free and
that the linkage is giving an accurate setting by moving the linkage. Check the setting again.
Put the box end of a combination wrench over the nut and the bolt. The nut and the bolt
connect control rod (6) and the bellcrank. Pull upward on the control rod three times. Check
the setting again.
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Illustration 14 g00323448
6. If the other injectors need to be adjusted, use the rack synchronization gauge (5). When all
adjustments have been made, release the actuator terminal shaft.
Illustration 15 g00323450
8. Check the fuel setting and perform any necessary adjustments. Refer to Fuel Setting
Procedure for this procedure.
Table 8
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Tools Needed
9U-5132 Engine Timing Tool Group 1
4C-8753 Extended Collet 1
6V-3075 Dial Indicator 1
5P-7263 Indicator Contact Point 1
8T-2684 Rack Synchronization Gauge 1
Refer to Special Instruction, SEHS9278 for the instructions on the use of the 4C-8753 Extended
Collet .
Fuel setting is the adjustment of the fuel setting screw to a specified position. The fuel setting
screw limits the power output of the engine by setting the maximum travel of all the fuel injector
racks.
Illustration 16 g00323603
Note: Before the fuel setting is checked, the injectors must be correctly synchronized. Refer to
Injector Synchronization Procedure. After the injectors are synchronized correctly, leave the
synchronization pin in place for the procedure that follows.
1. Put 6V-3075 Dial Indicator (2) with 5P-7263 Indicator Contact Point . Install contact Point
(4) in 4C-8753 Extended Collet (3). Remove the plug from the right side of fuel setting
cover (8) .
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Illustration 17 g00323643
2. Move the governor or the actuator terminal shaft toward the ON position. The flat face of
fuel stop lever (6) should make contact with synchronization pin (5). Hold the linkage in
this position.
Illustration 18 g00323663
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3. Install dial indicator (2) and extended collet (3) in the threaded hole. After indicator contact
point (4) touches fuel stop lever (6), slide dial indicator (2) until the indicator reads zero.
Keep the dial indicator in this position by tightening collet (3) .
Illustration 19 g00805403
Note: Refer to the TMI (Technical Marketing Information) for the correct fuel setting.
5. If the fuel setting is correct, remove the dial indicator and the synchronization pin. Install
the two plugs, and install the synchronization pin back into cover (8) .
NOTICE
A mechanic with governor and fuel setting training is the ONLY one to
make adjustments to the engine fuel setting.
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1. Cut the seal wire and remove fuel setting cover (8) and the gasket. Loosen locknut (7). Hold
the fuel stop lever against the end of the fuel setting screw. Turn the fuel setting screw
clockwise or counterclockwise until the correct reading is on the dial indicator.
Illustration 20 g00323705
2. Now tighten locknut (7). Be sure that the fuel setting screw does not turn when the locknut
is tightened. Release the fuel system linkage and move the linkage toward the fuel ON
position. Check the dial indicator reading again in order to be sure that the fuel setting is
still correct.
3. Remove dial indicator (2) and synchronization pin (5). Install the two plugs.
Illustration 21 g00323706
(7) Locknut
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4. Put fuel setting cover (8) and the gasket in position over the fuel setting screw. Install the
bolt and synchronization pin (5) in the cover. Install a new seal wire.
Table 9
Tools Needed Quantity
(1)
5P-4160 Indicator Contact Point 1
(1)
9S-9082 Engine Turning Tool 1
(1)
1U-8869 Dial Indicator 1
9U-5132 Engine Timing Tool Group 1
(2)
6V-3075 Dial Indicator 1
8S-3675 Indicator Contact Point 1
9U-5138 Setting Gauge 1
9U-5137 Magnetic Fixture 1
(3)
122-0451 Timing Fixture Rod 1
122-0449 Rod Sleeve Extension 1
9U-6272 Nylon Screw 1
(1)
Not included in 9U-5132 Engine Timing Tool Group .
(2)
Two Dial indicators each with their own procedure are available to set fuel timing. Checking or setting fuel
timing with the 1U-8869 Dial Indicator is the preferred method.
(3)
Some 122-0451 Timing Fixture Rod Assemblies were manufactured 10 mm (0.40 inch) too long. The correct
length for the rod is 124.00 mm (4.8819 inch). If the rod included with the tool group measures 134.00 mm
(5.2756 inch) remove 10 mm (0.4 inch) from the end closest to the retaining ring.
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Illustration 22 g00322956
1. The digital dial indicator must be programmed to read 64.34 mm (2.5331 inch) since this is
the correct dimension for electronic unit injector engines. The following steps show how to
program the indicator to read 64.34 mm (2.5331 inch).
c. A negative "-" sign should be in the display window under "REV". If that space is
blank, push the "+/−" button so the display shows a negative "-" sign. When this is
done, the movement of the plunger into the indicator will be displayed. The display
will be shown as a negative movement. The movement of the plunger out of the
indicator will be displayed as a positive movement.
d. Push the preset button and hold the preset button down until there is a flashing "P" in
the upper right corner of the display. Then release the button.
e. Push the preset button and hold the preset button down until the flashing "P"
disappears and a flashing indicator bar is seen in the lower left corner of the display.
Then release the button. Use the preset button so that this position is blank.
f. Push the preset button and hold the preset button down until the flashing indicator
begins flashing under the first number position. The first number position is located in
the fourth position to the left of the decimal. Then release the button. Momentarily
pushing the preset will cause the display number in that position to change. Use the
preset until this position reads zero (0).
g. Use the preset button to move the flashing indicator and change the display numbers
until the display shows 64.34 mm (2.5331 inch). Push the preset button and hold the
preset button until the flashing "P" is shown in the upper right corner of the display.
Release the preset button. Momentarily push the preset button so the flashing "P" and
the zeroes to the left of 64.34 mm (2.5331 inch) disappear.
h. The indicator can now be turned off. The indicator will retain the preset number in
memory. To recall the preset number, repeat Steps 1.a through 1.d.
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Illustration 23 g03402901
3. Install Extension Rod (2) and Extension (3) into the larger diameter tube of Fixture (1).
Place the timing fixture onto Set Gauge (4) with the Rod Assembly (2) resting on the 64.34
mm (2.5331 inch) step.
4. Install Indicator (5) into Extension (3). Position the Indicator (1) into the Extension (3) so
that the indicator stem has adequate travel. Tighten the Screw (6) .
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Illustration 24 g03402922
6. Momentarily push the preset button on the digital dial indicator in order to stop the "P" in
the upper right-hand corner from flashing. The display should show 87.00 mm. Place the 1U
-8869 Dial Indicator and the 9U-5233 Magnetic Fixture Group in the correct position on the
injector. Make sure that the magnetic base of the timing fixture is on the top surface of
injector follower (7) and that the extension rod is on the top surface of shoulder on fuel
injector body (8) .
Note: The top surfaces of injector follower (7) and shoulder on fuel injector body (8) must
be clean and dry.
7. The digital dial indicator should now read the actual fuel timing dimension of the injector
that is being checked.
8. No adjustment is necessary if the dial indicator reads the correct fuel timing dimension.
Refer to the TMI (Technical Marketing Information) for the engine that is being checked.
Proceed to Step 13.
9. If the dial indicator does not read the correct fuel timing dimension or the desired fuel
timing dimension, proceed with Steps 10 through 14.
10. Ensure that the Indicator (5) and the Fixture Group (1) are in the correct position on the
injector. Loosen the locknut for the pushrod adjustment screw.
11. Turn the adjustment screw until the desired fuel timing dimension is read on indicator (1).
Note: Turning the adjustment screw clockwise will lower the fuel timing dimension.
Turning the adjustment screw counterclockwise will increase the fuel timing dimension.
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12. Tighten the adjustment screw locknut to a torque of 70 ± 15 N·m (50 ± 11 lb ft) and check
adjustment again. If necessary, repeat the procedure until the adjustment is correct.
13. Remove the timing bolt from the flywheel when the fuel timing check is completed.
14. Turn the flywheel by 360 degrees in the direction of normal engine rotation. Install the
timing bolt for the flywheel. Repeat the procedure for the other half of the engine.
Illustration 25 g03730469
Table 10
443-4177 Parts List
No. Quantity Part No. Name
1 1 443-4174 Fixture Assembly
2 2 9U-6272 Nylon Screw
3 1 443-4175 Rod Assembly
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• Low height tool used on No. 2 Cylinders or injector adjustment on MT4400 Trucks
• Used to test and adjust fuel systems, including fuel timing, rack synchronization, and fuel
setting
Specifications
Table 11
Length 155 mm (6.10 in)
Width 40 mm (1.57 in)
Weight 0.18 kg (.40 lb)
Refer to TMI (Technical Marketing Information) for the correct fuel setting for the engine that is
being checked.
Illustration 26 g03401931
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1. Install the 8S-3675 Indicator Contact Point onto the indicator (1) .
2. Install Sleeve Extension (5) in the small diameter tube of Timing Fixture (2). Place Rod
Assembly (6) in Sleeve Extension (5) .
4. Put Dial Indicator (1) and Timing Fixture (2) onto the Set Gauge (3). The Timing Fixture
(2) should be on the top surface of the Set Gauge (3) with the Rod Assembly (6) on the
bottom 64.34 mm (2.5331 inch) step.
5. Move the Dial Indicator (1) in the Sleeve Extension (5) until both needles indicate zero.
Tighten Nylon Screw (4). The dial indicator has now been zeroed to a standard fuel timing
dimension of 64.34 mm (2.53317 inch).
Note: Some Dial Indicators (1) have a 0.25 mm (0.010 inch) smaller diameter extending
about 4.0 mm (0.158 inch) up from the end of their stems. When zeroing these indicators in
the bore of the 122-0449 Rod Sleeve Extension , the Nylon Screw (4) will contact the
indicator stem on this step. This can cause the indicator to cock in the bore and result in
incorrect readings. It is recommended that the 136-4587 Collet Extension and 5P-4814
Collet Clamp be used with the "stepped" indicator or that the 1U-8869 Dial Indicator be
used.
Illustration 27 g03402357
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6. Make sure the top surfaces of (7) and (8) are clean and dry.
7. Put Dial Indicator (1) and Timing Fixture (2) in position on the injector to be checked.
Make sure that the magnetic base of the timing fixture is on the top surface of Injector
Follower (7). The extension rod will rest on the top surface of Injector Shoulder (8) .
8. The dial indicator pointers must indicate 0.00 ± 0.20 mm (0.00000 ± 0.0079 inch).
9. If the dial indicator pointers indicate 0.00 ± 0.20 mm (0.00000 ± 0.0079 inch), or are within
the tolerance given in 8, no adjustment is necessary. Proceed to step 13.
10. If the dial indicator pointers do not indicate 0.00 ± 0.20 mm (0.00000 ± 0.0079 inch),
continue with step 11 through step 13.
Illustration 28 g03402450
11. Loosen the push rod adjustment screw locknut for the injector to be adjusted.
12. Turn the adjustment screw until zero is read on the dial indicator.
Note: If the dial indicator reading is greater than 0.00 ± 0.20 mm (0.00000 ± 0.0079 inch),
then turn the adjustment screw counterclockwise (CCW). If the dial indicator is less than
0.00 ± 0.20 mm (0.00000 ± 0.0079 inch), turn the adjustment screw clockwise (CW).
13. Tighten the adjustment screw locknut to 70 ± 15 N·m (51.63 ± 11.06lb ft). If necessary,
repeat procedure until the adjustment is correct.
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14. Rotate engine, re-pin the flywheel, and repeat the procedure for the other half of the engine
that has not yet been adjusted.
For additional product support questions concerning this tool, contact the Dealer Service Tools
Hotline at:
International: 1-309-578-7372
Note: Continuing improvement and advancement of product design can mean some photographs
or illustrations in this publication will show details that are different from your service tool.
Copyright 1993 - 2021 Caterpillar Inc. Tue Oct 26 16:16:31 UTC+0330 2021
All Rights Reserved.
Private Network For SIS Licensees.
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