LI18.30-N-056338

Traces of oil in area around oil/water heat exchanger (inner V) on engine 642
Topic number
LI18.30-N-056338
Version
7
Design group
18.30 Oil cooling system
Date
09-01-2016
Validity
Model 639 with engine 642
Model 906 with engine 642
Reason for change
Part number added
Reason for block
Complaint:
•
•
Traces of oil in area (3) around oil/water heat exchanger (inner V) on engine 642. (See attachment "02.jpg")
Traces of oil at drain points of inner V on engine 642.
Cause:
1.
2.
Oil leak from the Turbocharger Inlet Seal (175). (See attachement "OM 642 Turbocharger.jpg")
Seals between engine block and oil / water cooler may be leaking.
Attachments
File
Description
OM 642 Turbocharger.jpg
Verify oil is not leaking from the turbocharger Inlet Seal
(175)
Remedy:
1- Verify oil is not leaking from the Turbocharger Inlet Seal (175). (See attachement "OM 642 Turbocharger.jpg")
a - Reference Service Bulletin V-B-09.00/01 "Operations in Clean Air Line Area"
2. Separate the electrical connector (1) and detach the fuel filter (2) (See attachment 01.jpg) from the bracket and
pull out (see AP47.20-D-0780HD for model 906, AP47.20-S-0780B for model 639 with engine 642.990 or AP47.20S-0780C for model 639 with engine 642.890).
Note: Do not disconnect the fuel hoses from the fuel filter (2).
3. Use a borescope (000 588 01 21 00) to check whether the traces of oil come from the area (3) around the oil / water heat exchanger.
Note: If the traces of oil come from the area (3) around the oil / water heat exchanger, continue with step 4. If the traces of oil do not come from the area (3) around the oil / water heat exchanger, ascertain the exact cause of the problem and initiate appropriate measures.
4. Remove oil cooler; refer to WIS document "AR18.30-S-6840SE."
Note: Do not remove any parts until you drain all the coolant. Refer to WIS document "AR20.00-D-1140SD." If you do
not drain the coolant and remove the oil cooler, coolant will leak into the oil passages and may cause engine damage.
5- Before removing oil cooler, clean the area around the outside of the oil cooler to enure all debris has been removed. (See attachement "Oil Cooler Top.jpg")
Note: Failure to do so may result in debris or foreign objects entering the engine causing engine problems.
6- When replacing the oil cooler O-ring seals, ensure the new part is installed. (See attachment "new_gasket2.jpg.")
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7- Clean residual oil around oil cooler passages in the top of the engine block.
Note:
a - When cleaning, it is essential to start from the center of the hole and wipe outward as debris or foreign objects may
enter the hole and cause engine failure. (See attachment "Clean Away from holes.jpg")
b - The oil cooler is not the cause and must not be replaced.
c - "Reworking" contact surfaces (e.g. with abrasive paper / Scotchbrite or machining) to remove sealant residues is
not permitted (See Attachment "Engine damages due to use of abrasives"). Any consequential damage caused by
this is not covered by the warranty or goodwill provisions.
Attachments
File
Description
01.jpg
Shown on fuel filter (2) and electrical connector on engine
642.
02.jpg
Check whether the traces of oil come from the area (3)
around the oil/water heat exchanger.
new_gasket2.jpg
Picture of New and Old gaskets
Oil Cooler Top.jpg
Oil Cooler Top view
Clean Away from Holes.JPG
Clean away from the holes
Engine damages due to use of abrasives_Page_1.jpg
Engine damages due to use of abrasives
Symptoms
Power generation / Engine lubrication/oil cooling / Function / Oil level too low
Power generation / Engine lubrication/oil cooling / Leakage / External oil loss
Parts
Part number
ES1 ES2 Designation
A 642 188 05 80
Quantity Note
Gasket, oil cooler to cylinder
crankcase
2
EPC
Please use this part number - EPC is
being updated.
X
Operation numbers/damage codes
Op. no.
Operation text
Time
Damage
code
Note
18-6840
REMOVE/INSTALL/SEAL OIL HEAT EXCHANGER FOR ENGINE, REPLACE IF NECESSARY
---
18242 04
Model 906
Engine oil heat exchanger seal Leaking
The listed damage code is not to
be considered as an acceptance of
costs.
Please refer to the applicable warranty and goodwill policies.
18-7122
REPLACE OIL/WATER HEAT EX--CHANGER UNIT (CHARGE AIR MANIFOLD REMOVED), VEH. WITH ENGINE OM 642
18242 04
Model 639
Engine oil heat exchanger seal Leaking
The listed damage code is not to
be considered as an acceptance of
costs.
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Please refer to the applicable warranty and goodwill policies.
WIS-References
Document number
Title
Note
Allocation
AR18.30-S-6840SE
Remove/install oil/water he- Engine 642 in model 639
at exchanger
Engine 642.896 /898 /992 /
993 in model 906
Remedy
AP47.20-D-0780HD
Replace fuel filter
Engine 642.89/99 in model
906
Remedy
AP47.20-S-0780B
Replace fuel filter
Engine 642.990, 646.98 in
model 639
Remedy
AP47.20-S-0780C
Replace fuel filter
Engine 642.890 in model
639
Remedy
WS01.00-P-0097B
000 588 01 21 00 Endosco- Engines ALL
pe
Remedy
Attachments
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01.jpg:
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02.jpg:
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new_gasket2.jpg:
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Oil Cooler Top.jpg:
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OM 642 Turbocharger.
jpg:
Clean Away from Holes.
JPG:
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Engine damages due to
use of abrasives_Page_
1.jpg:
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