Oil Pump Removal; Flywheel Removal; Front Cover Removal; Timing Chain And Camshaft Sprocket Rem Oval - GMC T Series 1994 Repair Manual

27. Gasket 82. Nut
28. Reinforcement 83. Bolt
29. Oil Pan 84. Stud
Figure 11— Oil Pan and Components

OIL PUMP REMOVAL

Remove or Disconnect (Figure 12)
1. Bolt (31), oil pump to main bearing cap.
2. Complete oil pump assembly (30).
3. Shaft extension (32) and retainer (33).

FLYWHEEL REMOVAL

«-+ Remove or Disconnect
1. Flywheel bolts.
2. Flywheel.

FRONT COVER REMOVAL

Remove or Disconnect
1. Front cover bolts.
2. Front cover.
3. Front cover gasket.
30. Pump Assembly
31. Bolt
32. Shaft Extension
33. Retainer
Figure 12— Oil Pump and Components
TIM IN G CHAIN AND CAMSHAFT
SPROCKET REMOVAL
B
Remove or Disconnect (Figure 13)
• Check timing chain free play. If the timing chain
V0509
(41) can be moved back and forth in excess of 16
mm (5/8 inch), make a note that the timing chain
(41) should be replaced during assembly.
1. Camshaft sprocket bolts (39) and nut (34).
2. Camshaft sprocket (40) and timing chain (41)
together.
• The sprocket has a light interference fit on the
camshaft. Tap the sprocket on its lower edge to
loosen it.

CAMSHAFT REMOVAL

Remove or Disconnect (Figures 13 through 15)
Tool Required:
J 5825-A Crankshaft Gear Remover
1. Balance shaft drive gear stud (35).
2. Balance shaft drive gear (37).
3. C rankshaft sp ro cke t (38), if necessary. Use
J 5825-A (figure 14).
4. Camshaft retainer bolts and camshaft retainer.
5. Camshaft.
A. Install three 5/16-18 inch bolts 100-125 mm
(4-5 inches) long into the camshafts threaded
holes. Use these bolts to handle the camshaft
(figure 15).
V0510