Crankshaft Rear Oil Seal Removal; Crankshaft Rear Oil Seal Retainer Removal; Crankshaft Removal - GMC T Series 1994 Repair Manual

5. Connecting rod and piston.
A. Attach J 5239 to the connecting rod bolts.
B. Use the long guide rod J 5239 to push the con­
necting rod and piston out of the bore through
the top of the engine.
6. Connecting rod bearings.
CRANKSHAFT REAR OIL
SEAL REMOVAL
Remove or Disconnect (Figure 19)
NOTICE: Take care when removing the rear
crankshaft oil seal so as not to damage the
crankshaft sealing surface. A minor scratch
can cause a major oil leak.
• Crankshaft rear oil seal. Insert a screwdriver into
the notches provided in the seal retainer and pry
the seal out.
CRANKSHAFT REAR OIL SEAL
RETAINER REMOVAL
Remove or Disconnect (Figure 20)
1. Screws (50) and nuts (51).
2. Seal retainer (52).
3. Gasket (54).

CRANKSHAFT REMOVAL

The crankshaft need not be removed for replacement
of rear oil seal or main bearings. These procedures are
covered in other sections of this manual.
Important
Check the main bearing caps for location markings.
Mark the caps if necessary. The caps m ust be
returned to their original locations during assembly.
A. Rear of Block
50. Screw
51. Nut
52. Retainer
53. Stud
54. Gasket
Figure 20—Crankshaft Rear Oil Seal Retainer
Remove or Disconnect
1. Main bearing cap bolts.
2. Main bearing caps and lower main bearing inserts.
3. Crankshaft from the cylinder block with extreme
care, taking care to avoid damage to crankshaft
journals and thrust flange surfaces.
4. Upper main bearing inserts.
V0516