Camshaft Removal - Chevrolet 1988 Light Duty Truck Repair Manual

Figure 2 0 — Removing the Upper Seal Half
Figure 21 — Removing the Upper Rear Main Bearing Insert
4.8 LITER L6 6A4-13
• Use a small brass drift and hammer. Tap on
the insert, on the side opposite the bearing
tang, until the insert rotates out of position
(figure 21).
• Use a pair of pliers with the jaw s taped to
prevent dam age to the crankshaft. Clamp the
insert to the crankshaft fla n ge (figure 21).
Rotate the crankshaft (154) to remove the
bearing insert.
4. Upper main bearing inserts (130).
• Insert J-8080 into the crankshaft (154) oil hole
(figure 22).
• Rotate the crankshaft to " tu rn " the bearing
insert out of the block.

CAMSHAFT REMOVAL

R em o ve o r D is c o n n e c t (F ig u res 5 an d 23)
• Turn the cam shaft (182) until the screws (93) are
visible through the holes in the cam sh aft gear
(94) (figure 23).
1. Screws (93).
2. Cam shaft (182). Pull the cam shaft out of the block.
Support the cam shaft carefully when rem oving
to prevent dam age to the cam shaft bearings.