Buick LeSabre 1965 Service Manual page 60

2 - 3 8 HEADS AND VALVES
ENGINE
5. Slide fuel pump eccentric on
camshaft and Woodruff key with
oil groove forward. See Fig-
ure 2-38.
6. Install distributor drive gear.
See Figure 2-38.
7. Install drive gear and eccen-
tric bolt and retaining washer.
Torque to 40-55 ft. lbs.
8. Reinstall timing chain cover
(subpar. c above).
f. Camshaft Replacement
1. Remove rocker arm and shaft
assemblies, push rods and valve
lifters.
2. Remove timing chain cover,
timing chain and sprocket sub-
paragraphs a and d above.
3. Slide camshaft forward out of
bearing bores carefully to avoid
marring the bearing surfaces.
Figure 2-38—Fuel Pump Eccentric and
Distributor Drive Gear Installation
4. Replace camshaft by reversing
removal procedure, taking par-
ticular care to avoid damage to
the camshaft bearings.
g. Camshaft Bearings
The steel-backed babbitt-lined
camshaft bearings are pressed
into the crankcase. Going from
front to rear, each bearing is
bored. 030" smaller than the pre-
ceding bearing, and each cam-
shaft journal is correspondingly
reduced in diameter.
The camshaft bearings must be
line reamed to size after being
pressed into the crankcase. Since
this operation requires special
reaming equipment the original
bearings should be retained un-
less severly damaged. Slightly
scored camshaft bearings will be
satisfactory if the surfaces of
camshaft journals are polished
and bearings are cleaned up to
remove burrs, and the fit of shaft
in bearings is free and within
the clearance limits of .0015"
to .004".