Crankcase Front Cover - Chevrolet 10 1971 Series Chassis Service Manual

Fig. 10L— Installing Torsional Damper (Pull on Type)
PULL ON TYPE (With retaining bolt)
a. Install 7/16 threaded end of Tool J-23523 into
crankshaft.
Install tool in crankshaft so that at
CAUTION:
least 1/2" of thread engagement is obtained.
b. Position damper on crankshaft, aligning damper
with key on crankshaft.
c. Install plate, thrust bearing and nut to complete
tool installation.
d. Pull damper into position as shown in Figure 10L.
e. Remove tool from crankshaft.
3. Install fan belt and adjust using strand tension gauge.
4. If so equipped, install accessory drive pulley and
belt.
5. Install radiator core as outlined in Section 13.
6„ Connect radiator hoses.
7. Fill cooling system and check for leaks.

Crankcase Front Cover

Removal
1. Remove oil pan as outlined.
2. Remove crankshaft pulley and hub or torsional
Fig. 11 L— Centering Tool (J-23042) In Cover
Fig. 12L— Installing O il Seal (Cover Removed)
damper as outlined.
3. Remove crankshaft front cover attaching screws,
remove cover and gasket.
Installation
1. Clean gasket surfaces on block and crankcase front
cover.
2. Install centering Tool J-23042 in crankcase front
cover seal (fig. 11L).
3. Coat the gasket with gasket sealer and place in posi­
tion on cover, then install crankcase front cover to
block and torque to specifications.
4. Remove centering tool.
It is important that centering tool be
NOTE:
used to align crankcase front cover so that
crankshaft hub or damper installation will not
Fig. 1 3 L— Installing O il Seal (C over Installed) (Typical)
ENGINE 6-21
J-23042
10-30 CHEVROLET TRUCK SERVICE MANUAL