Pontiac Fiero 1988 Service Manual page 809

125C-22 A U T O M A T I C T R A N S A X L E
Governor Drive Gear
Replacement
Remove or Disconnect (Figure 51)
H > < p
Tool Required:
J-8433 Puller
Governor drive gear (679) with J-8433 -
place a thick flat washer or other protection
on the hub to avoid damage
Install or Connect
Drive gear - tap Into position with a soft
mallet.
Inspect (Figure 49)
• Pinions (685) and side gears (687) for damaged
teeth
Pinion
Gear
Replacement Procedure
1.
2.
3.
4.
5.
6.
Disassemble (Figures 49 and 52)
Retaining pin (683) use a pin punch as
shown
Pinion shaft (682)
Pinions (685), side gears (687) and washers
(684
and 686)
Inspect (Figure 49)
• Washers (684 and 686) and carrier for
damage
Assemble (Figure 49)
Side gears (687) and washer (686) into
carrier
Pinion thrust washer (684) to pinions (685),
retain with petrolatum
Pinions and thrust washers into carrier
Pinion shaft (682), slide through both
pinions for alignment, then remove.
Rotate pinions into position, then replace
shaft (682)
Retaining pin (683)
|n|jh| Assemble (Figure 49)
1.
2.
3.
4.
Thrust bearing (676) into carrier
Sun gear (675) stepped side facing up
Thrust bearing (674) outside race to internal gear
Internal gear (673) onto carrier
Install or Connect (Figures 49 and 53)
Tool Required:
J-33381 Final Drive Remover and Installer
1. Thrust washer (680) onto carrier assembly,
retain with petrolatum
2. Thrust bearing (681) onto carrier assembly,
inner race toward carrier, retain with
petrolatum
3. Carrier assembly into case with J-33381
678 DIFFERENTIAL
683 PIN, RETAINING
1 PUNCH, 5mm (3/16)
678-
683
Figure 52 Pinion Shaft Retaining Pin
678 DIFFERENTIAL CARRIER
H 1 2 5 - 3 8 - 3
Figure 53 Installing the Final Drive Assembly
Inspect
m Spacer (671) for damage
• Snap ring (647) for damage
Install or Connect (Figure 49)
1. Spacer (671) into the transmission case
j Important
The spacer (671) must fit into the case so
that the parking pawl operates freely.
2. Snap ring (647) into the snap ring groove.
Final
Drive to
Case
End
Play
Measure (Figures 54 and 55)
Tools Required:
J-26958-10 Adapter
J-25025-7
Post
J-26900-12 or J-800/M Dial indicator
J-28585 Snap ring remover
1. Install the dial indicator set so that stem contacts
the adapter.
With J-28585 through the governor bore, lift up
on the governor drive gear (679).
2.