XC70 L5-2.5L Turbo VIN 59 B5254T2 (2003)
Crankshaft Main Bearing Seal: Technical Service Bulletins
Engine - Rear Main Seal Replacement
NO: 21-17
DATE: 10-15-2002
MODEL/YEAR:
All 1992 and Later Equipped with 4, 5 and 6 Cylinder White Engines
AFFECTED ENGINES:
B41xx, B52xx, B62xx, B63xx
SUBJECT:
Crankshaft Seal, Rear, Replacing
REFERENCE:
VADIS/TNN 21-13 Oil Weepage, Rear Engine Seal, Flywheel Retaining Bolts
DESCRIPTION:
Several recommended method changes have been made to the rear crankshaft seal replacement procedures in VADIS. Rear main seal replacement can be
found in VADIS at:
Information Manager/Function group 2/Repair and installation/ 21 Engine/Crank Mechanism/Seal Rear, Replacing.
The changes include:
^
New Special Tools
^
New cleaning methods
^
New seal lubrication recommendations
^
New flywheel attachment procedure
From this time on we strongly recommend this new method be put into practice however not all tools are currently available; see service below for
alternatives. Testing and follow-up evaluation has shown a considerable reduction in repeat repairs when they are applied.
SERVICE:
Special Tools: 9995112 extractor, tool and 9995678 Special Screws are not available at this time.
Continue to use extractor 9995919 until further notice and be especially careful not to scratch the engine block or crankshaft when removing the seal.
Removed flywheel screws can be used as a substitute for Special Screws 9995678.
Remove all remaining sealant from the threads and mark the screw heads using paint or a punch mark so they can easily be identified. The reason for
drawing up the flywheel tight to the crankshaft flange, before installing new bolts and additional sealant, see TNN 21-13, is to avoid any sealant from
becoming lodged between the crank flange and flywheel which can result in an axial run-out condition.
Cleaning cloth 9511024 is available from Volvo parts. It is extremely important that there is no thread sealant residue or other dirt remaining on the
crankshaft or block before new seal is installed. It is equally important to remove and clean the flywheel flange screw holes. If debris remains it can be
pushed inward when the new screws are installed and cause poor seal performance.
Lubrication, Only Volvo Approved engine oil may be used to lubricate the new seal. Under no circumstances should grease be used. Grease attracts dirt
and results in the build up of contamination on the crankshaft flange causing poor seal performance.
Warranty Note:
Below you will find the applicable operation number and labor description for the above repair. Labor Time has not been added. Reason for
this is the large number of variant combinations that this TNN covers. Consult the VSTG for the correct labor time as it applies to the repaired
vehicle.
