Front Cover Replacement - GMC G Service Manual

Figure 16 — Removing the Torsional Damper
Install or Connect (Figures 17 and 18)
Tools Required:
J 35468 Seal Installer
J 23523-E Torsional Damper Puller and
Installer
1. Crankshaft key (if removed).
2. Front crankshaft seal using J 35468 (figure 17). The
open end of the seal faces inside the engine. Coat the
seal lips with engine oil.
NOTICE: The Inertia weight section of the tor­
sional damper Is assembled to the hub with a
rubber-like material. The correct installation pro­
cedures (with the proper tool) must be followed
or movement of the inertia weight section of the
hub will destroy the tuning of the torsional
damper.
3. Stud ('A'; figure 18) to the crankshaft. Thread the stud
fully into the tapped hole in the crankshaft.
4. Torsional damper over the end of the stud. Align the
keyway in the torsional damper shaft with the crank­
shaft key.
5. Bearing, washer and nut (figure 18).
• Turn the nut to pull the torsional damper into
place.
• Remove J 25323-E.
• Use a small amount of RTV sealant to seal the tor­
sional damper key to crankshaft joint.
6. Torsional damper bolt and washer.
H O Tighten
• Bolt to 95 N*m (70 ft. lbs.).
7. Accessory drive pulley.
8. Fan shroud assembly.
9. Fan pulley, fan and fan belts.
4.3 LITER V6 6A3-15

FRONT COVER REPLACEMENT

H Remove or Disconnect
1. Torsional damper. Refer to "Torsional Damper and
Front Crankshaft Seal Replacement" in this section.
J
A. Installation Stud
B. Nut
C. Washer and Bearing
Figure 18 — Installing the Torsional Damper
2. W ater pump. Refer to ENGINE COOLING
(SEC. 6B1).
3. Oil pan. Refer to "Oil Pan Replacement" in this
section.
4. Front cover bolts and reinforcements.
5. Front cover.
6. Front cover to block gasket.
7. Front crankshaft oil seal from the front cover. Pry out
with a screwdriver. Take care not to distort the front
cover.
^ Clean
• Old gasket from the front cover and block.
L00707