Pontiac Fiero 1988 Service Manual page 896

UNIT REPAIR MUNCIE 282 (5-SPEED) TRANSAXLE 7B3A-17
fork (185, 194 and 198) for wear, scoring or
distortion
- lever (181, 187, 191 and 200) for wear or
distortion
• Wear, scoring or distortion requires replacement
of assembly.
DIFFERENTIAL AND RING GEAR
•
Disassemble (Figure
22)
Tools Required:
J-2241-11 or J-23598 Side Bearing Puller
Adapter (Alternate)
J-22888 Bearing Remover
J-22888-35 Bearing Remover Leg (Two)
Remove or Disconnect (Figure
22)
1. Bolts (77).
2. Gear (70).
3. Bearings (75 and 60), using J-22888, J-22888-35
(two), and J-2241-11 or J-23598.
Speedo gear (71 or 72).
removal will destroy gear (71).
Bolt (68) and washer (69).
Pin (63).
Gears (67) and washer (64), gears (66) and
washers (65).
4.
5.
l& Inspect (Figure
22)
® Clean with solvent, air dry.
• Differential components.
- gears (70, 71 or 72, 67 and 66), for
scuffed, nicked, burred or broken
teeth
carrier (61), for distortion, bores out of
round or scoring, replace if these
conditions are present
bearings (60 and 75) for roughness of
rotation, burred or pitted condition,
replace if these conditions exist
Thrust washers (64 and 65) for wear,
scuffed, nicked or burred condition
• If scuffed, nicked, burred or scoring
conditions cannot be removed with a soft
stone or crocus cloth, replace the
component.
Assemble (Figure
22)
Tools Required:
Hydraulic Press
J-22919 Differential Inner Bearing Installer
• Heat mechanical configuration nylon
speedo drive gear (71) in hot tap water for
five minutes prior to installation.
• Heat electronic configuration steel speedo
drive gear (72) in oven at 1 2 0 ° C (250°F) for
7-10 minutes prior to installation.
• Do not reuse bolts (77) ONE TIME USE
ONLY.
A. E L E C T R O N I C S P E E D O GEAR (72) R E Q U I R E S
HEATING PRIOR TO INSTALLATION
M E C H A N I C A L S P E E D O GEAR (71) R E Q U I R E S
HEATING (HOT TAP WATER) PRIOR TO
INSTALLATION
60. B E A R I N G , D I F F E R E N T I A L
61. C A R R I E R , A S S E M B L Y D I F F E R E N T I A L
62. C A R R I E R , D I F F E R E N T I A L
6 3 . PIN, C R O S S D I F F E R E N T I A L
64. W A S H E R , T H R U S T PINION G E A R
6 5 . W A S H E R , T H R U S T S I D E G E A R
66. G E A R , S I D E D I F F E R E N T I A L
67. G E A R , PINION D I F F E R E N T I A L
88. S C R E W , 9 N m (84 lb in.)
69. W A S H E R , L O C K
70. G E A R , RING D I F F E R E N T I A L
71. G E A R , S P E E D O (MECHANICAL)
72. G E A R , S P E E D O ( E L E C T R O N I C )
75. B E A R I N G , D I F F E R E N T I A L
77. B O L T (TEN), 8 3 N m (61 lb ft)
GX1269-MN5TX
Figure 22
Differential and Ring Gear Components