Replace Pinion Assembly And Adjust Pinion Preload; Gauge Plate Installed; Checking Pinion Depth - Pontiac Grand Prix Service Manual

4A-22
1%9
PONTIAC SERVICE MANUAL
Fig. 4A-39 Gauge Plate Installed
4
10. Select correct pinion shim to be used during pinion REPLACE PINION ASSEMBLY AND ADJUST PINION
reassembly on the following basis:
PRELOAD
NOTE: Pontiac
-
Fijleen (IS) shims are available in
Position pinion assembly in carrier and install new
increments of (.W2") two thousandths j?om .020" to
collapsible spacer.
.050" (Fig. 4A-41).
NOTE: Tap rear of pinion assembly with sofi hammer to
assure seahng of rear pinion bearing to its u t e r race in
Tempest, Firebird, or Grand Prix
-
Ten (10) shims are
carrier.
available in increments of (.002") two thousandths from
.02Q' to .038' (Fig. 4A -41).
2. Place front pinion bearing in position on pinion.
Hold pinion, fully forward and drive bearing over
pinion until seated, using installer J 2 1285-0 1.
a..If reusing production pinion, and pinion is marked
"+"
(plus), correct shim will have a thickness equal to
gauge reading found in step 7, plus the amount
specified on pinion.
b. If production pinion is marked
"-"
(minus), correct
shim will have a thickness equal to gauge reading
found in step 7, less the amount specified on pinion.
c. If using production or service pinion which has no
marking, the correct shim will have a thickness equal
to the gauge reading found in step 8.
11. Loosen stud J 8619-13 and remove gauge plate J
21777-2, washer J 21777-8 (Pontiac only), pilot J
8619-12 and both bearings from case.
12. Slide pinion shim onto pinion shaft and install rear
pinion bearing on pinion, using installer J 6547-P, J
21022-T, F, or G.P. and holder J 6407-1 and 2 in a
press, as shown in Fig. 4A-42.
Fig. 4A-40 Checking Pinion Depth