GMC 1989 Light Duty Truck Repair Manual page 438

6A3-14 4.3 LITER V-6
20. Valve K eeper
21. Cap
22. S h ie ld
23. O -R ing Seal
24. Seal
25. D am per
Figure 19— Valves and Components
26. S p rin g
27. In ta ke Valve
28. R o ta to r
29. E xh au st Valve
CLEANING AND INSPECTION OF COMPONENTS
Refer to GENERAL ENGINE MECHANICAL (SEC. 6A)
and perform the following.
igi
Clean
Components as outlined.
Inspect
13
Components as outlined.
M easure
• Valve stem clearance.
• Valve spring tension and free length.
Other information outlined includes:
• Valve and seat grinding.
• Valve guide reaming.
ROCKER ARM STUD REPLACEMENT
R em ove 6 r D isconnect (Figure 21)
Tool Required:
J 5802-01, Rocker Arm Stud Remover
Figure 2 1 — R em oving th e Rocker Arm Stud