Volvo Workshop Service and Repair Manuals

Technical Service Bulletin # 21113

Date: 850701

Camshaft Bearing - Scored/Abnormal Wear

Subject:

Product

CARS

RECONDITIONING CAMSHAFT BEARING
SURFACES

Group

B21, B23

21

Date:

No.

JULY, 1985

113

THIS BULLETIN IS APPLICABLE TO THE U.S. AND CANADIAN MARKETS

Camshaft bearing surfaces which are scored due to lack of lubrication (seized camshaft) caused by sludge build-up in the oil gallery (lack of
maintenance), can, in most cases, be repaired by reaming the bearing surfaces and drilling the oil supply gallery. The reconditioning must be performed
with cylinder head removed.

NOTE:

This method should be used on older vehicles, outside the new car warranty, in order to reduce the repair cost.

PARTS REQUIRED

DESCRIPTION

P/N

Bearing Caps

1276107-8

Valve Stem Seals

1306630-3

Valve Dampers

1219648-1

Front Oil Seal

1306333-4

Sealer

1161027-6

Nut Lock

1161053-2

Assembly Paste (spray)

1161006-0

SPECIAL TOOLS

DESCRIPTION

P/N

Reamer

9990949-1

Press Tool

9995021-4

Counter Hold

9995034-7

Valve Guide Seal Tool

9995219-4

Cylinder Head Removal & Disassembly Information