Flywheel Removal; Rear Crankshaft Oil Seal R Em O Val; Rear Crankshaft Oil Seal Retainer R E M O V A L; Crankshaft Removal - GMC 1989 Light Duty Truck Repair Manual

Figure 10— Replacing the Piston and Connecting
Rod (Typical)

FLYWHEEL REMOVAL

+ + Rem ove or D isconnect
1. Flywheel bolts.
2. Flywheel.
REAR CRANKSHAFT OIL
SEAL REMOVAL
*"► Rem ove or D isconnect
NOTICE: Care should be taken w hen rem oving
the rear crankshaft oil seal so as n o t to nick the
crankshaft sealing surface.
• Rear crankshaft oil seal. Insert a screwdriver into
the notches provided in the seal retainer and pry the
seal out (figure 11).
REAR CRANKSHAFT OIL SEAL
RETAINER REMOVAL
Rem ove or D isconnect (Figure 12)
1. Screws (81).
2. Seal retainer (82).
3. Gasket (84).
4.3 LITER V-6 6A3-9

CRANKSHAFT REMOVAL

+ + Rem ove or D isconnect
• Check the main bearing clearance before removing
the crankshaft. Refer to " C rankshaft and Main
Bearing Installation" later in this section.
• The main bearings and rear oil seal can be replaced
without removing the crankshaft as outlined later in
this section.
1. Main bearing cap bolts.
2. Main bearing caps.
3. Crankshaft from the cylinder block.
• Lift the crankshaft straight up, taking care to
avoid damage to the crankshaft journals and
thrust flange surfaces.
Figure 12— Rear Crankshaft Oil Seal Retainer
Installation