Oil Pan Removal; Oil Pump Driveshaft R Em Oval; Oil Pump Removal; Front Cover Removal - GMC 1989 Light Duty Truck Repair Manual

89. Key
94. Bolt
95. Crankshaft
96. Bolt
97. Crankshaft
98. Bolt
99. Washer
100. Crankshaft

OIL PAN REMOVAL

R em ove or D isconnect (Figure 5)
1. Bolts (75).
2. Oil pan (76).
• If the rocker arm cover adheres to the block,
try to shear the sealant from the block by
bumping the end of the oil pan with a rubber
m allet. If the cover w ill not com e loose,
carefully pry until loose. DO NOT DISTORT
THE SEALING FLANGE.
OIL PUMP DRIVESHAFT
REMOVAL
+ + R em ove or D isconnect (Figures 5 and 15)
1. Bolts (117).
2. Plate (118).
3. Bearing (113).
4. Shaft and gear assembly (115 and 114).

OIL PUMP REMOVAL

E3
Rem ove or D isconnect (Figure 5)
1. Bolts (84) and nut (78) at oil screen bracket.
2. Oil pump (77).

FRONT COVER REMOVAL

□ R em ove or D isconnect (Figures 5 and 14)
1. Timing gear cover bolts (94).
2. Timing gear cover (102).
• If the timing gear cover adheres to the cylinder
head, carefully pry it loose. DO NOT DISTORT
THE SEALING FLANGE.
Figure 14— Timing Gear Cover and Components
2.5 LITER L4 ENGINE
PISTON AND CONNECTING ROD
REMOVAL
Rem ove or D isconnect (Figures 5, 16 and 17)
1. Ridge (or deposits) at the top of the cylinder as
follows:
• Turn the crankshaft until one piston is at the
bottom of its stroke. Place a soft cloth on top of
the piston.
A
6 1 - 1 1
F-01992