Plate 110-1

MAN B&W Air Cooler Element

Edition 0072
Data Data 1 (1)

SAFETY PRECAUTIONS For detailed sketch, see 900-2

X Stopped engine
X Shut off starting air supply – At starting air receiver
X Block the main starting valve
X Shut off starting air distributor/distributing system supply
X Shut off safety air supply – Not ME engines
X Shut off control air supply
Shut off air supply to exhaust valve – Only with stopped lubricating oil pumps
X Engage turning gear
X Shut off cooling water
Shut off fuel oil
Stop lubricating oil supply
Lock the turbocharger rotors

Data

Ref. Description Value Unit

D10-04 Air cooler element 1550 kg

D10-06 Reversing chamber 350 kg
D10-07 Water inlet/outlet cover 350 kg

Data D11001 Edition 0072

BLANK
 Plate 910-1.1
MAN B&W Air Cooler Element
Edition 0252
Checking Page 1 (7)

1. For the day-to-day checking of the scav-

enge air cooler, measure the drop in pres- 1.
sure and temperature of the scavenge air
across the cooler while the engine is run-
ning.

Compare these measurements with the

testbed data. For further evaluation of the
measurements, see the instruction book Vol-
ume I, OPERATION, Chapter 706.
P t
2. An increase in the air pressure drop across
the scavenge air cooler indicates fouling of
the air side of the cooler.

M91001-0247C01
A decrease in the air temperature drop
across the scavenge air cooler indicates
fouling of the water side of the cooler.

3. If the measurements indicate fouling of the 4.

water side of the air cooler element, the el-
ement must be dismantled and overhauled/
cleaned.

If the measurements indicate fouling of

the air side of the air cooler element, it is
recommended to inspect the air cooler ele-
ment as follows:

4. Remove the inspection cover from the air

cooler.
M91001-0247C04

5. Visually inspect the air cooler element

through the opening.

If the air side of the element is fouled,

clean the element using the spray pipe ar-
rangement fitted above the air cooler ele- 5.
ment.
See Procedure 910-1.3.
M91001-0247C05

M91001 Edition 0252

 Plate 910-1.2
MAN B&W Air Cooler Element
Edition 0252
Dismantling Page 2 (7)

1. Close the cooling water inlet and outlet

1. valves. Open the drain cocks to drain off
the cooling water.

2. Dismount the cooling water inlet and outlet

pipes from the end cover.

Remove and discard the gaskets.

3. Dismantle the screws and pull out the

cooler element approx. 10 cm, using the
dismantling screws.
M91001-0247D01

2.
M91001-0247D02

3.
M91001-0247D03

M91001 Edition 0252

 Plate 910-1.2
MAN B&W Air Cooler Element
Edition 0252
Dismantling Page 3 (7)

4. Mount the lifting bracket on the front end

cover. 4.

Attach two tackles to the lifting bracket, D10-04

one horizontally and one vertically.

Using the vertical tackle, lift the air cooler

element approx. 2-3 mm.

Using the horizontal tackle, pull out the air

cooler element approx. half a metre.

5. Mount the two guide rails on the frame

around the air cooler element.

M91001-0247D04
6. Using the horizontal tackle, pull out the air
cooler element far enough to gain access
to the aft end cover.

Mount two shackles in the upper corners of 5.

the aft end cover.

Mount lifting wire ropes between the two

shackles and the lifting bracket, and hook
the engine room crane on to the lifting wire
ropes.

Remove the two tackles and lift the air

cooler element away. Land the element on
a couple of wooden planks.

Note!
M91001-0247D05

During the lift, take care not to damage

the air cooler element.

6.
D10-04
M91001-0247D06

M91001 Edition 0252

 Plate 910-1.3
MAN B&W Air Cooler Element
Edition 0252
Overhaul Page 4 (7)

Cleaning the air side:

1.
1. The air side of the cooler is cleaned by in-
jecting a chemical fluid through the spray
pipe arrangement fitted to the air chamber
above the cooler element.

It is recommended to use one of the fol-

lowing cleaning fluids, or a similar product.

• Product: ACC 9, produced by

Drew Chemical Corp., New York, USA

• Product: 80B, produced by

M91001-0247O01

Vecom Int., Maassluis, Holland

2. Do not start cleaning until the engine has

been at a standstill for about 30 minutes.
Do not disconnect the compressed air sup-
3. ply to the exhaust valve.

Remove the covers on the scavenge air re-

ceiver to let vapours escape.

3. Follow the detailed cleaning instructions

displayed at the cleaning pipe on the en-
gine. To ensure satisfactory spraying of the
cleaning fluid, the circulating pump pres-
sure must be at least 0.7 bar.

4. Continue the cleaning process for at least

30 minutes. The time required depends on
the frequency with which cleaning is car-
ried out and on the chemical product used.

5. After cleaning, flush the cooler with clean

water until the water in the sight glasses
appears clean and pure.

6. Inspect the air cooler element by removing

the cover of the scavenge air cooler hous-
M91001
0241O02

ing. See Procedure 910-1.2.

M91001 Edition 0252

 Plate 910-1.3
MAN B&W Air Cooler Element
Edition 0252
Overhaul Page 5 (7)

Cleaning the water side

2.
1. Dismantle the air cooler element and re-
move it from the engine.
See Procedure 910-1.2.

2. Dismantle the front end cover of the air

cooler element. Remove and discard the
gasket.

3. Dismantle the aft end cover of the air cool-

er element. Remove and discard the gas-
ket.

M91001-0247O02
4. Clean the inside of the tubes, using the
cleaning brush (supplied by the cooler ele-
D10-07
ment manufacturer) mounted on a drilling
machine. In the event of leakages between
cooling tube and tube plate, the tubes are
rolled with the tube expander (also supplied 3.
by the cooler element manufaturer).

5. Clean and check the inside of the front end

and aft end covers. If necessary replace
the corrosion blocks.

Note!
If damaged, the coating inside the cov-
ers is to be repaired with the original
coating or a similar product.
M91001-0247O03

6. When cleaning is complete, mount new

gaskets and re-mount the front end and aft D10-06
end covers of the air cooler element.

7. Re-mount the air cooler element in the

scavenge air cooler housing. 4.
See Procedure 910-1.4.
M91001-0247O04

M91001 Edition 0252

 Plate 910-1.4
MAN B&W Air Cooler Element
Edition 0252
Mounting Page 6 (7)

1. Lift the air cooler element and land the

1. aft end of the element on the guide rails
D10-04 mounted on the air cooler housing.

Hook a tackle on to the bracket at the front

of the air cooler element.

Remove the lifting wire ropes and shackles.

2. Push the air cooler element inwards ap-

prox. one metre.

Remove the guide rails from the air cooler

housing.
M91001-0247D06

3. Clean the frame around the air cooler ele-

ment and the contact surface of the front
end cover.

2. Apply a thin layer of silicone paste to the

frame around the air cooler element and
the contact surface of the front end cover.

Push the air cooler element fully into the air

cooler housing.
M91001-0247M02

3.
M91001-0247M03

Silicone

M91001 Edition 0252

 Plate 910-1.4
MAN B&W Air Cooler Element
Edition 0252
Mounting Page 7 (7)

4. Mount and tighten all the screws of the

front end cover. 4.

Remove the tackle and the lifting bracket

from the front end cover.

5. Mount the cooling water inlet and outlet

pipes on the front end cover.

6. Close the drain cocks and open the cooling

water inlet and outlet valves.

Note!

M91001-0247M04
Remember to vent trapped air from
the air cooler element.

5.
M91001-0247D02

6.
M91001-0247M06

M91001 Edition 0252

BLANK
 Plate 110-2
MAN B&W Non-Return Valve
Edition 0009
Data Data 1 (1)

SAFETY PRECAUTIONS For detailed sketch, see 900-2

X Stopped engine
X Shut off starting air supply – At starting air receiver
X Block the main starting valve
X Shut off starting air distributor/distributing system supply
X Shut off safety air supply – Not ME-engines
X Shut off control air supply
X Shut off air supply to exhaust valve – Only with stopped lubricating oil pumps
Engage turning gear
Shut off cooling water
Shut off fuel oil
Stop lubricating oil supply
Lock the turbocharger rotors

Data

Ref. Description Value Unit

Data D11002 Edition 0009

BLANK
 Plate 910-2.3
MAN B&W Non-Return Valve
Edition 0216
Overhaul Page 1 (2)

Non-Return Valve
K98MC-C
0216
Overhaul
910-2.3

1.
1. Access to the non-return valves in the scav-
enge air receiver takes place – after the en-
gine has been stopped – through the
inspection openings of the receiver.

Warning!

Access to the scavenge air receiver must

MA910-6.0 33 01
not be attempted until the air in the
receiver is clean.

2. Remove the two outermost and middle nuts

(which fasten the valve assembly to the 2.
housing).

Lift the complete valve assembly out of the

air receiver.

3. Remove the hexagon set screw from the

valve shaft and knock the valve shaft out of
the valve flap.

3.

M91002 Edition 0216

 Plate 910-2.3
MAN B&W Non-Return Valve
Edition 0216
Overhaul Page 2 (2)

4. 4. For further dismantling, remove the two

screws which hold the clamp and the sup-
port together as an assembly.

Clean the valve shaft and the slide bearings

inside the valve flaps. Lubricate the valve
shaft and the slide bearings with molybde-
num disulphide (MoS 2).

5. Assemble the valve

After the overhaul, it must be possible to

move the valve flap by the light touch of a
finger.

6. Re-mount the valve in the scavenge air re-

ceiver.

M91002 Edition 0216

 Plate 110-3
MAN B&W Auxiliary Blower
Edition 0021
Data Data 1 (1)

SAFETY PRECAUTIONS For detailed sketch, see 900-2

X Stopped engine
X Shut off starting air supply – At starting air receiver
X Block the main starting valve
X Shut off starting air distributor/distributing system supply
X Shut off safety air supply – Not ME-engines
X Shut off control air supply
X Shut off air supply to exhaust valve – Only with stopped lubriating oil pumps
Engage turning gear
Shut off cooling water
Shut off fuel oil
Stop lubricating oil supply
Lock the turbocharger rotors

Data

Ref. Description Value Unit

D10-12 Electric motor, impeller and motorplate 600 kg

Data D11003 Edition 0021

BLANK
 Plate 910-3.3
MAN B&W Auxiliary Blower
Edition 0224
Overhaul Page 1 (1)

When cleaning and inspecting the auxiliary

blower, take out the electric motor and the 1.
blower wheel as one whole assembly.

1. Disengage the cable connections to the

blower motor.

Attach a wire rope with shackle to the

eyebolt fitted on the blower flange, and
hook
on the tackle suspended from mount-
ings on the gallery bracket.

Remove the bolts in the blower wheel

M91003-0224O01
flange, and pull the electric motor with
flange and blower wheel out of the end
cover, using the tackle.

2. Inspect and clean the blower wheel as well

as the blower housing.
3.
3. If the whole blower assembly is to be re-
moved, the inspection covers on the scav-
enge air receiver are to be removed first.

Caution!
Make sure that the air in the receiver is
clean before making the access.

Remove all bolts holding the motor flange.

The complete blower can now be pulled
free of the suction pipe by means of the
M91003-0224O03

tackle. While pulling out the blower as-

sembly, make sure that the blower housing
disengages from the air pipe without de-
forming it.

4. When fitting the end cover with the com- 4.

plete blower, the parts are to be “guided”
into place with care.

For overhaul of blower wheel and bearings,

see blower manufacturers instructions.
M91003-0224O04

M91003 Edition 0224

BLANK
 Plate 110-5
MAN B&W Turbocharger Turbine
Edition 0010
Data Data 1 (1)

SAFETY PRECAUTIONS For detailed sketch, see 900-2

Stopped engine
Shut off starting air supply – At starting air receiver
Block the main starting valve
Shut off starting air distributor/distributing system supply
Shut off safety air supply – Not ME-engines
Shut off control air supply
Shut off air supply to exhaust valve – Only with stopped lubriating oil pumps
Engage turning gear
Shut off cooling water
Shut off fuel oil
Stop lubricating oil supply
Lock the turbocharger rotors

Data

Ref. Description Value Unit

Data D11005 Edition 0010

BLANK
 Plate 910-5.1
MAN B&W Turbocharger Turbine
Edition 0216
Cleaning Page 1 (2)

The dry cleaning method employs compressed

air to blow dry, solid, granules through the tur-
bocharger, thus removing most of the deposits
which may have formed on the nozzle vanes
and turbine blades.

On account of their hardness, nut
shells, or

broken or artificially shaped pieces of acti-
vated charcoal with a size of between 1.0 and
max. 2.8 mm are particularly suited as blasting
agents.

For exact information about cleaning agent

size, see manufactors documentation.

Note!
We do not recommend the use of rice
or grain as cleaning materials, as these
may possibly stick in the exhaust gas
boiler.

It is not always possible to remove thick de-

posits with this dry cleaning method.

Therefore, in order to prevent the build
up of

thick deposits, the turbine must be cleaned af-
ter every 24 to 50 hours of operation.

Generally, turbocharger cleaning can be carried

out without, or with very little, reduction of the
engine load.

More detailed information regarding the amount

of granules to be used is stated on the instruc-
tion plate located close to the turbocharger.

Note!
Regarding water washing of turbocharg-
er turbine, see turbine manufacturer’s
instructions.
See also Volume I, Chapter 706.

M91005 Edition 0216

 Plate 910-5.1
MAN B&W Turbocharger Turbine
Edition 0216
Cleaning Page 2 (2)

Cleaning Procedure:
1.
1. Carry out cleaning for every 24 to 50 hours
of operation, based on observations.
A C 2. Clean the turbocharger at an engine load
between 50%-90%. Do not clean below
half load.
B
3. Close valve A.

4. Open valves B and C, to blow out any de-

posits and/or condensate in the connecting
pipe.
M91005-0215O01

After about two minutes, close valves B

and C.

5. Slowly open valve A to relieve the pressure

2. in the tank.
Amount
TC type
dm3 6. Fill the tank with the quantity of granules
0.5 specified in the table.
TCA 33
TCA 44 0.5 7. Close valve A.
TCA 55 1.0
TCA 66 1.5 8. Open valves B and C, to blow
in the gran-
2.0 ules. After one to two minutes, close valves
TCA 77
B and C.
TCA 88 2.5
TCA 99 3.0 9. Slowly open valve A to relieve the pressure
TPL 61 0.5 in the tank.
TPL 65 0.6
Caution!
TPL 69 0.9
TPL 73 1.2 1.The drain openings in the gas casings
must remain closed while dry cleaning
TPL 77 1.5 the turbine.
TPL 80 2.0
TPL 85 3.0 2. It is possible that during dry cleaning
0.4 of the turbine, some of the blown
in solid
MET 33
particles or sparks will escape through
MET 42 0.7 the funnel.
MET 53 1.6
MET 60 2.1
MET 66 2.6
MET 71 3.0
M91005
0216O02

MET 83 3.5
MET 90 3.5

M91005 Edition 0216

 Plate 110-6
MAN B&W Water Mist Catcher
Edition 0040
Data Data 1 (1)

SAFETY PRECAUTIONS For detailed sketch, see 900-2

X Stopped engine
X Shut off starting air supply – At starting air receiver
X Block the main starting valve
X Shut off starting air distributor/distributing system supply
X Shut off safety air supply – Not ME engines
X Shut off control air supply
Shut off air supply to exhaust valve – Only with stopped lubricating oil pumps
Engage turning gear
X Shut off cooling water
Shut off fuel oil
Stop lubricating oil supply
Lock the turbocharger rotors

Data

Ref. Description Value Unit

D10-11 Water mist catcher 100 - 200 kg

Data D11006 Edition 0040

BLANK
 Plate 910-6.2
MAN B&W Water Mist Catcher
Edition 0219
Dismantling Page 1 (2)

Water Mist Catcher

S46MC
0219
Dismantling
910-6.2

2.
1. Normally it is not necessary to remove the
water mist catcher from the scavenge air
cooler housing. If, however, the water mist
catcher has been fouled or damaged, it
must be dismantled for cleaning or repair.

2. Dismantle the rectangular covers from both

the front and aft ends of the scavenge air
cooler housing.

3. Loosen the screws at both ends of the wa-

ter mist catcher.

GM910-6.2 213 02
Note!

Note the position of the water mist

catcher. During mounting, the water mist
catcher must be re-mounted in the same 4.
position.

4. Pull or push the water mist catcher halfway

out and mount an eye bolt in the top of the
water mist catcher. D10-11
Hook a tackle on to the eye bolt and lift the
water mist catcher away. Land it on a cou-
ple of wooden planks.

Note!
GM910-6.2 213 04

Take care not to damage the water mist

catcher during the lift.

5. Clean the water mist catcher with the same

cleaning fluid as used for the scavenge air
cooler element.

M91006 Edition 0219

 Plate 910-6.4
MAN B&W Water Mist Catcher
Edition 0219
Mounting Page 2 (2)

Mounting
910-6.4

1. 1. Apply a thin layer of silicone paste to the

frame of the water mist catcher on the side
which will face away from the engine when
the water mist catcher is mounted (the side
opposite to the screws).
Toward
Engine 2. Slide the water mist catcher into the scav-
enge air cooler housing.

Note!

Make sure to mount the water mist

catcher correctly. The screws of the
GM910-6.4 213 01

water mist catcher must face the exhaust

side of the engine.
6LOLFRQH

When the water mist catcher is half-way in,

2. remove the tackle and the eye bolt, and
push the water mist catcher fully into the
scavenge air cooler housing.

3. Tighten the screws at both ends of the wa-

ter mist catcher.

Apply a thin layer of silicone paste on the

D10-11 frame and mount the rectangular covers on
the front and aft ends of the scavenge air
cooler housing.
GM910-6.4 213 02

3.
GM910-6.4 213 03

M91006 Edition 0219

 MAN B&W Turbocharger System - Tools Plate
91061-0071

P91061 Edition 0071

 MAN B&W Turbocharger System - Tools Plate
91061-0071

Item Item
Item Description Item Description
No. No.

9521 Lifting eye bolt

9621 Pulling tool

P91061 Edition 0071

 MAN B&W Air Cooler - Tools Plate
91063-0017

P91063 Edition 0017

 MAN B&W Air Cooler - Tools Plate
91063-0017

Item Item
Item Description Item Description
No. No.

9823 Guide rail, air cooler fore end

9824 Guide rail, air cooler fore end

P91063 Edition 0017

 MAN B&W Air Cooler - Tools Plate
91063-0019

P91063 Edition 0019

 MAN B&W Air Cooler - Tools Plate
91063-0019

Item Item
Item Description Item Description
No. No.
039 Screw
040 Screw
052 Nut
9825 Guide rail, rear end - right
9826 Guide rail, rear end - left

P91063 Edition 0019

 MAN B&W Travelling Trolley Plate
91064-0002

P91064 Edition 0002

 MAN B&W Travelling Trolley Plate
91064-0002

Item Item
Item Description Item Description
No. No.

9524 Travelling trolley

Note:

* When ordering this tool, please state

load and track width.

P91064 Edition 0002

 MAN B&W Air Cooler - Lifting Tools Plate
91066-0001

P91066 Edition 0001

 MAN B&W Air Cooler - Lifting Tools Plate
91066-0001

Item Item
Item Description Item Description
No. No.

023 Screw
9827 Lifting attachment air cooler fore end,
complete

P91066 Edition 0001