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

Figure 37— Measuring Crankshaft End Play
Measure
With the crankshaft wedged forward, measure at
the front end of the rear main bearing with a feeler
gage (figure 37). The proper clearance is 0.002 to
0.006 inch.
If correct end play cannot be obtained, be certain
that the correct size rear main bearing has been
installed.
Production engines may have rear main bearings
that are 0.008 inch wider across the thrust faces
than standard.
Inspect
1?
Crankshaft for binding. Try turning the crankshaft to
check for binding, if the crankshaft does not turn
freely, loosen the main bearing cap bolts one pair
at a time until the tight bearing is located. Burrs on
the bearing cap, foreign matter between the insert
and the block or the bearing cap, or a faulty insert
could cause a lack of clearance at the bearing.
SCREW, SEAL RETAINER
8 0
.
NUT, SEAL RETAINER
8 1
.
RETAINER, SEAL
8 2
.
STUD, SEAL RETAINER
8 3
.
GASKET, SEAL RETAINER
8 4
.
BLOCK, ENGINE
114
.
^ Tighten
•A ll main bearing cap bolts to 100 N-m (75 lbs. ft.).
CRANKSHAFT REAR OIL SEAL
RETAINER INSTALLATION
Clean
• Gasket surfaces on the block and seal retainer.
|-»4-| Install or Connect (Figure 38)
1. New gasket (84) to the block.
• It is not necessary to use sealant to hold the
gasket in place.
2. Seal retainer (82).
NOTICE: Refer to "Notice" on page 6A3-1.
3. Screws (80) and nuts (81).
Tighten
• Screws and nuts to 15 N-m (135 lbs. in.).
CRANKSHAFT REAR OIL
SEAL INSTALLATION
Install or Connect (Figure 39)
Tool Required:
J 35621 Seal Installer
• Crankshaft rear oil seal.
A. Lubricate the inner and outer diameter of the
seal with engine oil.
B. Install the seal on J 35621.
C. Position J 35621 against the crankshaft. Thread
the attaching screws into the tapped holes in
the crankshaft.
V2976