Valve Train Component Installation - GMC 1990 Light Truck Repair Manual

6A2-24 2.8 LITER V
35. Bolts
36. Bolts
37. Reinforcem ents
38. Nuts
Figure 38—Oil Pan Installation
Tighten
All bolts to 55 N-m (40 ft. lbs.), using the
sequence shown in figure 39.
In sequence, tighten all bolts an additional 90
degrees (1 /4-turn).
-6
F-05902
Figure 40—Rocker Arms and Pushrods
VALVE TRAIN COMPONENT
INSTALLATION
If lifter replacement is necessary, use new lifters with a
narrow flat along the lower 3U of the body length. This
provides additional oil to the cam lobe and lifter surfaces.
Important
Replace all hydraulic lifters if a new camshaft was
installed.
-► *- Install or Connect (Figure 40)
• Lubricate the hydraulic lifter bodies and feet with
Engine Oil Supplement (GM Part No. 1051396 or
equivalent).
1. Hydraulic lifters (10) to the block.
2. Pushrods (9).
• Seat the pushrods into the socket in the
hydraulic lifters.
• Coat the mating surfaces of the rocker arms (7) and
balls (8) with " Molykote" or equivalent.
3. Rocker arms.
4. Balls (8).
5. Nuts (6).