Removing Camshaft From Cover; Thrust Washer Installation; Installing Camshaft Rear Plug - Pontiac Grand Prix Service Manual

SIX CYLINDER ENGINE 6-11
Fig. 6-15 Removing Camshaft From Cover
6. Clean all parts in a suitable solvent.
7. Inspect rocker arm cover for cracks or porosity.
8. Inspect gasket surface and front seal area.
9. Inspect bearing surface for excessive wear or scoring.
NOTE: Minor nicks and scratches on edge of bearing
surface can be corrected using a suitable scraper or file.
10. Inspect rear camshaft plug opening and thrust
washer retaining slot for wear.
11. Inspect camshaft finished surfaces for wear and
scoring.
12. Inspect camshaft oil passages for restrictions.
13. Remove all foreign deposits, sludge, metal parti-
cles, etc. from area of q5nder head and clean oil
reducer tube using air pressure or pipe cleaner.
REPLACE
1. Install camshaft from the rear, in rocker arm cover
using caution not to damage bearing surfaces in rocker
arm
cover.
2. Install thrust washer in rocker arm cover as shown
(Fig..6-16).
3. Install retaining washer and bolt. Tighten to 40 lb.
ft.
4.
Using
J 8894
install new oversize camshaft bore
plug until fully seated (Fig. 6- 17).
IMPORTANT: A camhaft bore plug not fully seated
could result in excessive camhaft end play. Corkect end
play is .003"-.W1 when read at the sprocket end with a
dial indicator. Fig. 6-18.
NOTE: Lubricate camhaft lobes and iocker arm paris
with Engine Oil Supplement (E.O.S.) before replacing
camshaft and cover assembly. Installation of new
camshaft requires the use of %ew rocker arms.
5. Replace thermostat and water outlet fitting. Tighten
to 25 lb. ft.
6. Install rocker arm cover assembly and adjust
camshaft belt as previously outlined. Camshaft cover
bolts and nuts should be tightened evenly (15 lb. ft.)
(from center outwards) to avoid possible warping of
cover. A torque wrench must be used to avoid over
tightening.
NOTE: Engine must be run at idle for jive minutes afier
installing camshaft. This will ensure adequate
lubrication to the camshaft and rocker arm mating
surfaces.
Fig. 6-16 Thrust Washer Installation
Fig. 6-17 Installing Camshaft Rear Plug