Service manual

181 CID (3.0L) 4 CYLINDER GM ENGINE SERVICE MANUAL NUMBER 26
Page 3A-40 90-861329--1 MARCH 1999
Crankcase Front Cover
Removal
1. Remove engine from boat if necessary to gain access to cover.
2. Remove torsional damper and oil pan.
3. Remove water circulating pump.
4. Remove crankcase front cover.
5. If damaged, drive oil seal out of front cover (from the rear) using a punch.
Cleaning and Inspection
Clean front cover in solvent and dry with compressed air. Clean old gasket material and
sealer from mating surfaces on cover and cylinder block. Check gasket surface on front
cover for distortion, and fix if necessary. Surfaces must be clean and flat or oil leakage may
result.
Installation
1. Install oil seal in cover with lip of seal toward inside of engine, using crankcase front
cover seal installer. Support cover around seal area with appropriate tool as shown.
74530
a
a-Crankcase Front Cover Seal Installer (J-35468)
2. Coat both sides of front cover gasket with Quicksilver Perfect Seal and place in position
on engine.
3. Install front cover. Ensure holes in cover align with dowel pins in block. Torque front
cover attaching screws to 100 lb-in. (11 Nm).
4. Install oil pan and torsional damper as outlined.
5. Install water circulating pump.
6. Reinstall engine in boat.
7. Fill crankcase with engine oil.
CAUTION
Ensure that cooling water supply is available before starting the engine.
8. Start engine and check for water and oil leaks.
Index