Service manual

181 CID (3.0L) 4 CYLINDER GM ENGINE SERVICE MANUAL NUMBER 26
Page 3A-28 90-861329--1 MARCH 1999
c. If clearance exceeds specifications, it will be necessary to ream valve guides for
oversized valves, as outlined under “Valve Guide Bore Repair.”
72336
c
b
a
a-Valve Stem
b-Dial Indicator
c-Valve Guide
Rocker Arm Studs
Rocker arm studs with damaged threads or with loose fit in cylinder heads should be
replaced with new, oversize studs. Studs may be installed after reaming holes as follows:
1. Drain water from cylinder block.
2. Remove old stud by placing Tool J-5802-1 over stud, installing nut and flat washer and
turning the nut to remove stud.
74288
a
a-Tool J-5802-01
Index