Service manual

181 CID (3.0L) 4 CYLINDER GM ENGINE SERVICE MANUAL NUMBER 26
Page 3A-64 90-861329--1 MARCH 1999
b. Index front bearing (as explained in “Important” above), and drive it into position with
tool. Check position of oil hole(s) in bearing to ensure bearing is positioned correctly.
74479
Removal And Installation Camshaft Bearings
a-Installation Tool
b-Camshaft Bearing
c. Install rear bearing in same manner. Be sure to index bearing correctly.
3. Install a new camshaft rear plug.
IMPORTANT: Plug must be installed flush to 1/32 in. (0.8 mm) deep and must be paral-
lel with rear surface of cylinder block.
4. Install crankshaft and camshaft as previously outlined.
Cylinder Block
Cleaning and Inspection
1. Remove all engine components as previously outlined.
2. Wash cylinder block thoroughly in cleaning solvent and clean all gasket surfaces.
3. Remove oil gallery plugs and clean all oil passages.
4. Remove expansion plugs.
NOTE: These plugs may be removed with a sharp punch or they may be drilled and pried
out.
5. Clean and inspect water passages in cylinder block.
6. Inspect cylinder block for cracks in cylinder walls, water jacket valve lifter bores and main
bearing webs.
Index