Pontiac FIREBIRD 1972 Service Manual page 1114

76-76 1972 PONTIAC SERVICE MANUAL
install new pump body-to-case O-ring seal (square
cut) on pump cover.
29. Aligning marks made on disassembly, install oil
pump to case.
30. Install all but one (at 4 o'clock position) pump at-
taching bolts and tighten alternately to 20 lb. ft.
torque.
NOTE: Use new washer-type seals on pump
bolts.
IMPORTANT: I f the input shaft can not be
rotated as the pump is being pulled into place
or the pump can
not
be pulled down properly,
the direct and forward clutch housings have not
been installed properly to index the Eacedplates
with their respective parts. This condition must
be corrected before pump is pulled into place.
31. Check front unit end play as follows:
Move transmission so that output shaft points
down and install a 5/16"-18 threaded slide ham-
mer bolt (or J 21904-1) into threaded bolt hole in
pump body (at 4 o'clock position).
With flat of hand, move input shaft rearward and
mount dial indicator J 8001 on bolt and index
plunger of indicator on end of input shaft. "Zero"
the indicator (Fig. 7 6 - 154).
Push up on output shaft and record the amount
of end play registered by the dial indicator.
Indicator should read from .033" to .064". If
reading is within these limits, proper selective
thrust washer is being used.
NOTE: Front unit end play is controlled by
thickness ofpump cover-to-direct clutch drum
selective thrust washer. This is the washer ha v-
ing one (I) tang (Fig. 7G- 155).
Fig. 7 6 - 1 5 5 Clutch Drum Selective Thrust Washer
e. If reading is not within these limits, it is necessary
to remove pump, change to a thicker or thinner
selective thrust washer as required to obtain
specified clearance, re-install pump and repeat
the above checking procedure.
NOTE: There are three (3) selective washers
a val'la ble, .065-. 067, .082-. 084 and .099-. 10 1
".
When end play is within specifications, remove tools,
install remaining pump attaching bolt with its new
washer-type seal and torque bolt to 20 lb. ft.
IMPORTANT: Make sure input shaft can be
rotated. It it cannot, this condition
must
be
corrected!
Fig. 7 6 - 1 5 4 Checking Front Unit End Play Fig. 7 6 - 1 5 6 Selection of Proper Apply Pin