Chevrolet 70 1969 Series, Shop Manual

Page: 698 / 913

E N G IN E 6-27
Figure 4 2 — C r a n k s h a ft Pulley R e ta in in g Parts
under each cap to block bolt.
3. C oat oil seal lip with engine oil, then place cover
gasket at cylinder block. Install front cover assembly
and tighten retaining bolts and stud nuts.
INSTALLING C R A N K SH A F T PULLEY
HUB A N D /O R PULLEY
Crankshaft pulley hub or pulley is held in place by key,
cone (on Tilt C ab Model vehicles), retainer, and bolt
shown in Figure 42, or on some hubs and pulleys with
straight bore, the cone is not used.
I. Clean seal area on crankshaft pulley or hub thorough-
Figure 4 3 — Se rial N u m b e r Plates on H y w h e e l H o u s in g a n d A d a p te r
Plate
Figure 4 4 — Typical Flyw h eel Bolts a n d Lock Plates
ly and apply engine oil on surface contacted by oil
seal.
2. Align keyway in pulley with key in crankshaft, then
start pulley or hub onto front end of crankshaft. A s­
semble special installer shown in Figure 41, and turn
nut with wrench to force pulley firmly into place on
crankshaft.
3. Remove installer, then referring to Figure 42, locate
cone (if used) at hub, and install retaining washer and
bolt. Tighten retaining bolt with torque wrench to 200
to 210 foot-pounds.
APRON TYPE HOUSING INSTALLATION
On engines equipped with one-piece, apron type hous­
ing, locate the flywheel housing over dowel pins at cylin­
der block and install attaching bolts and washers. Tighten
bolts to 50 to 60 foot-pounds.
Use dial indicator in m anner previously described and
typically illustrated in Figures 16 and 17 to check for
housing alignment.
TWO-PIECE FLYWHEEL HOUSING
INSTALLATION
1. Locate flywheel housing over dowel pins in cylinder
block and install eight bolts and lockwashers. Tighten
bolts to 50 to 60 foot-pounds with torque wrench.
Figure 44 shows typical flywheel housing installed on
cylinder block.
2. Use dial indicator in mannei previously described and
shown in Figures 18 and 19 to check for squareness
and concentricity at housing.
CORRECTING FLYWHEEL
HOUSING MISALIGNMENT
If flywheel housing is misaligned as indicated by check
described in preceding paragraph, cause of misalignment
must be determined if possible, and necessary measures
must be taken to remedy the condition.
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L