7 1/2 And 7 5/8-Inch Ring Gear - GMC T Series 1994 Repair Manual

SUBJECT
7 1/2 and 7 5/8-Inch Ring G ear................................................................................................................................... 4B1-1
8 1/2-Inch Ring G ear....................................................................................................................................................... 4B2-1
9 1/2-Inch Ring G ear....................................................................................................................................................... 4B3-1
10 1/2-Inch Ring G ear.....................................................................................................................................................4B4-1
Dana Rear A xles...............................................................................................................................................................4B5-1
Locking Differentials....................................................................................................................................................... 4B7-1

7 1/2 AND 7 5/8-INCH RING GEAR

NOTICE: When fasteners are removed, always reinstall them at the same location from which they were
removed. If a fastener needs to be replaced, use the correct part number fastener for that application. If
the correct part number fastener is not available, a fastener of equal size and strength (or stronger) may
be used. Fasteners that are not reused, and those requiring thread locking compound will be called out.
The correct torque value m ust be used when installing fasteners that require it. If the above conditions
are not followed, parts or system damage could result.
SUBJECT
General D escription......................................................................................................................................................4B1- 2
Checking the Axle Before Disassem bly............................................................................................................. 4B1- 2
Disassembly of the Rear A x le ...............................................................................................................................4B1- 2
C lean in g ....................................................................................................................................................................... 4B1- 5
In spectio n .................................................................................................................................................................... 4B1- 5
Axle H ousin g .......................................................................................................................................................... 4B1- 5
D ifferential................................................................................................................................................................4B1- 6
Pinion and Ring G ear...........................................................................................................................................4B1- 6
B earin g s................................................................................................................................................................... 4B1- 6
S h im s.........................................................................................................................................................................4B1- 6
Assembly of the Rear A x le .................................................................................................................................... 4B1- 6
Pinion Depth Adjustm ent.................................................................................................................................... 4B1- 6
Differential Case A ssem b ly................................................................................................................................4B1- 7
Side Bearing Preload A djustm ent....................................................................................................................4B1- 8
Pinion Installation............................................................................ .....................................................................4B1- 9
Backlash Adjustment............................................................................................................................................4B1-10
Gear Tooth Pattern Check...................................................................................................................................... 4B1-11
Adjustments Affecting Tooth Contact............................... ..................................................................................4B1-12
Final Assem bly.......................................................................................................................................................4B1-12
S p ecificatio n s.................................................................................................................................................................4B1-14
Fastener Tightening Specifications......................................................................................................................4B1-14
SECTION 4B
REAR AXLE
CONTENTS
SECTION 4B1
CONTENTS
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