Oil Pan Replacement - GMC G Service Manual

6A4-16 SMALL BLOCK
70. Oil Pump
72. Oil Pump Bolt
Figure 19 — Oil Pan
I F I Inspect
• Front cover for distortion and damage. Replace if
necessary.
H Install or Connect (Figure 17)
Tools Required:
J 35468 Front Cover Aligner and Oil Seal
Installer
1. Front crankshaft seal. Use J 35468 (figure 17). The
open end of the seal faces inside the engine. Coat the
seal lips with engine oil.
2. Front cover gasket to the front cover. Use gasket
cement to hold it in place.
3. Front cover to the engine.
Tighten
• Front cover to block bolts to 11.3 N*m (100 in.
lbs.).
74. Gasket
75. Reinforcement
L00469
4. Oil pan. Refer to "Oil Pan Replacement" in this
section.
5. W ater pump. Refer to ENGINE COOLING
(SEC. 6B1).
6. Torsional damper. Refer to "Torsional Damper and
Front Crankshaft Seal Replacement" in this section.

OIL PAN REPLACEMENT

A one piece type of oil pan gasket is used.
h"*| Remove or Disconnect (Figure 19)
1. Battery negative cable.
• Raise the vehicle. Support with suitable safety
stands.
• Drain the engine oil.
2. Exhaust crossover pipe.
3. Flywheel/torque converter cover.
4. Strut rods at the engine mountings (V-models with
automatic transmissions).
5. Oil pan bolts, nuts, and reinforcements.
6. Oil pan and gasket.
KlM Clean
• Gasket surfaces on the engine and oil pan.
lL»l
Inspect
• Oil pan gasket for damage. Replace if necessary.
Install or Connect (Figure 19)
• Apply sealant (GM part number 1052080 or equiva­
lent) to the front cover to block joint and to the rear
crankshaft seal to block joint. Apply the sealant for
about 25 mm inch) in both directions from each of
(1
the four corners.
1. Oil pan gasket to the oil pan.
2. Oil pan to the engine.
3. Oil pan bolts, nuts, and reinforcements.
I ^ \ l Tighten
• Oil pan bolts to 11.3 N*m (100 in lbs.).
• Oil pan nuts to 22.6 N*m (200 in. lbs.).
4. Strut rods at the engine mountings (V-models with
automatic transmissions).
5. Flywheel/torque converter cover.
6. Exhaust crossover pipe.
• Lower the vehicle.
7. Proper quantity and grade of engine oil. Refer to
MAINTENANCE AND LUBRICATION (SEC. 0B).
8. Battery negative cable.