Front Cover Oil Seal; Front Cover - GMC 1976 ZEO 6083 Maintenance Manual

6A- 5 0 ENGINE
2. Install harmonic balancer
on
crankshaft (Fig-
ure 49). Use tool J-24724 .
lbs.
NOTE :
Balancer to crankshaft fit is .001" tight
to .0007" loose.
3. Install washer and bolt . Torque bolt to 160 ft .
4. Install crankshaft pulley and torque four (4)
bolts to 10 ft. lbs.
5. Position belts over pulley .
6. Reposition venturi ring seal and install seal
retainer strap.
7. Lower vehicle .
8 . Tension drive belts. Refer to "Belt Tension"
earlier in this section .
9 . Install engine cover.
FRONT COVER OIL SEAL
REMOVAL (FRONT COVER INSTALLED)
1 . Raise vehicle.
2. Loosen belts so they may be slipped off crank-
shaft pulley .
3 . Remove crankshaft pulley and harmonic ba-
lancer . Refer to "Crankshaft Pulley" and "Har-
monic Balancer" earlier in this section.
Figure 54-Installing Harmonic Balancer
4. Pry seal out of cover from the front with a
large screwdriver, being careful not to damage the
surface on the crankshaft .
INSTALLATION
1. Apply 1050026 sealer or equivalent to outside
diameter of seal .
2. Using Tool J-5154-01, install oil seal as shown
in Figure 55 . Tighten until .005" feeler gauge will fit
between front cover and tool .
3 . Install crankshaft pulley and harmonic ba-
lancer . Refer to "Crankshaft Pulley" and "Har-
monic Balancer" earlier in this section.
4. Install belts. Refer to "Belt Tension" earlier in
this section .
5 . Lower vehicle.
FRONT COVER
REMOVAL
1 . Raise vehicle .
2. Drain cooling system . Disconnect radiator
hoses, heater hoses, and by-pass hose from the water
pump and radiator.
3. Drain oil.
Figure 55-Front Cover Oil Seal Installation