Pontiac Fiero 1988 Service Manual page 886

UNIT REPAIR MUNCIE 282 (5-SPEED) TRANSAXLE 7B3A-7
Pa ESS
A . FIFTH GEAR ( 3 ) , BEARING RACE (6) REQUIRE
HEATJNG PRIOR TO INSTALLATION
B. STUHT PRESS OPERATION OF 3RD/4TH GEAR
SYNCHRONIZER I 8 i . DO NOT CONTACT BLOCKER
RING (14)
LIFT GEARS (15) A WD (14) WITH PROBE TO
ENGAGE B L O C K E R RING (14) INTO
SYNCHRONIZER (8). CONTINUE PRESS
OPERATION
C. PHE8S FS^TH -32AR (3)
2. S N A P R S i ^
3. 5TH GEAR
4* 4TH GEAR
§
D
BEARING, 4TH GEAR
6. RACE, BEARING 4TH GEAR
7. BLOCKER RING, 4TH GEAR
8. SYNCHRONIZER ASSEMBLY, 3RD/4TH GEAR
1 4 . BLOCKER R I N G , 3RD GEAR
15* 3RD GEAR
13. BEARING, 3RD GEAR
1?. SWIFT, INPUT
JH1259-MN5TX
Important (Figure 13)
Identify blocker ring (31) for fifth gear,'
blocker ring (41) for second gear and
blocker ring (48) for first gear. DO NOT
MIX.
j * - ^ Remove or Disconnect (Figure 13)
Figure 12 Input Shaft Components Installation
Reverse gear-fifth gear synchronizer assembly
(25), using J-22912-01 and hydraulic press.
Blocker ring (3).
Fifth speed gear (32).
Fifth gear bearing (33).
Thrust washer (35).
Ball (34).
Snap ring (36).
First gear (49), bearing (50), caged thrust bearing
(51) and thrust washer (52), using J-36183 and 15
ton press MINIMUM.
second gear (38), bearing (39), race (40), 1-2
synchronizer (42), blocker rings (41 and 48)
and 3-4 gear cluster (37) will press off with
first gear.
Inspect (Figure 13)
• Clean with solvent, air dry.
m Output shaft components.
shaft (53) for spline wear or cracks,
replace if these conditions exist
- gear teeth (53), (49), (38), (37), (32),
(25) for scuffed, nicked, burred, or
broken teeth
bearing races (53), (40), for scoring,
wear or overheating
bearings, for roughness of rotation,
burred or pitted condition, replace if
these conditions exist
- synchronizer (42) and (25) (REFER
TO SYNCHRONIZER REPAIR)
• If scuffed, nicked, burred or scoring
conditions cannot be removed with a soft
stone or crocus cloth, replace the
component.
Assemble (Figure 14)
Tools Required:
Oven
Hydraulic Press
J-36183 Input/Output Shaft Gears Press
Tube
J-36184 Input/Output Shaft Press Tube
Reducer
m Bearing race (40) requires heating 1 2 0 ° C
(250°F) in oven, minimum 7-10 minutes. 3-4
gear cluster (37) requires heating 1 2 0 ° C
(25°0F) in oven, MINIMUM 20 minutes.
• Lubricate all components as assembly
progresses. Use lubricant P/N 12345349 or
equivalent.