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CONTENTS (cont’d)
SUBJECT
PAGE
Spacer and Shim S pecificatio n s.......................................................................................................................... 4B1-14
Lubrication...................................................................................................................................................................4B1-14
Special T o o ls .................................................................................................................................................................. 4B1-15
GENERAL DESCRIPTION
The corporate 7 1/2 and 7 5/8-inch ring gear rear axle
uses a conventional ring and pinion gear set to transmit
the driving force of the engine to the rear wheels. The
gear set transfers the driving force at a 90 degree angle
from the propeller shaft to the axle shafts.
This axle is semi-floating. The axle shafts are sup
ported at the wheel end of the shaft by a roller bearing
pressed into the housing. The shafts are retained into
the housing by "C" lock clips in the differential. The
pinion gear is supported by two tapered roller bearings.
The pinion depth is set by a shim pack located between
the gear end of the pinion and the roller bearing
pressed on the pinion. The pinion bearing preload is set
by crushing a collapsible spacer between the bearings
in the axle housing.
The ring gear is secured to the differential case with
10 left-hand threaded bolts.
The differential case is supported by two tapered roll
er bearings. The differential and ring gear are located in
relationship to the pinion using selective shims and two
spacers between the bearings and the axle housing. To
move the ring gear, shims are removed from one side
and an equal amount added to the other. These shims
are also used to preload the bearings pressed on the
differential case. Two bearing caps hold the differential
in the axle housing.
The differential allows the wheels to turn at different
rates of speed while the axle continues to transmit the
driving force. This prevents tire scuffing during turns
and premature wear on internal axle parts.
The axle is sealed by a pinion seal, a seal at each
axle shaft end, and a gasket between the cover and
axle housing.
All corporate rear axles are identified by an alphabetic
broadcast code on the right axle tube as shown in fig
ure 1. The axle housing cover does not have a drain
plug.
CHECKING THE AXLE
BEFORE DISASSEMBLY
Inspect
1. Remove the axle cover and drain the lubricant.
2. The ring gear backlash. Refer to "Backlash Adjust
ments." This information can be used to determine
the cause of the problem. It will also help when
setting up the shim packs
for
locating and preload
ing the differential case.
3. The case for metal chips and shavings. Determine
where these chips and shavings came from, such
as a broken gear or bearing cage.
4. Determine the cause of the axle problem before
disassembly if possible.
DISASSEMBLY OF THE
REAR AXLE
Remove or Disconnect (Figures 2 through 11)
Tools Required:
J 2619-01 Slide Hammer
J 22813-01 Axle Bearing Puller
J 8107-2 Differential Side Bearing Remover
Plug
J 22888 Side Bearing Remover
J 8614-01 Pinion Flange Holder
J 8614-02 Pinion Flange Remover
J 25320 Rear Pinion Bearing Remover
• Place the axle in a suitable support.
1. Cover bolts and cover.
• Drain the axle lubricant.
2. Pinion shaft lock bolt (figure 3).
3. Pinion shaft.
• Push the axle shaft in towards the center of the
differential case.
4. The "C" lock from the end of the axle shaft.
5. Axle shaft from the axle housing.
6. Oil seal using an oil seal removal tool.
• Be careful not to damage the housing.
A.
B.
C.
D.
Axle Code
Axle Assembly Build Source Code
(C) Chev.-Buffalo
(K) GM of Canada
Day Built
Shift (D = Day, N = Night)
B8110
Summary of Contents for S Series 1994
Page 1: ......
Page 11: ...VIEW A p n n n j VIEW C F7554 Figure 10 Hydra Matic 4L60 E Transmission I D Location...
Page 24: ...NOTES...
Page 26: ......
Page 69: ...NOTES...
Page 71: ...3 2 STEERING...
Page 73: ......
Page 84: ......
Page 102: ...40...
Page 130: ...NOTES...
Page 146: ...NOTES...
Page 162: ...NOTES...
Page 166: ...Figure 5 Removing the Pinion Flange Figure 6 Pressing the Drive Pinion from the Cage...
Page 178: ...Figure 3 Spreading the Differential Case Figure 4 Removing the Differential...
Page 190: ...NOTES...
Page 202: ...NOTES...
Page 206: ...F5785...
Page 212: ...B Button Moved Out of Bearing Bore F5791...
Page 228: ...NOTES...
Page 232: ......
Page 234: ......
Page 236: ...Adjuster 63 Bolt 64 Lock Figure 10 Turning the Adjuster Plug K3 Models...
Page 237: ...Figure 13 Removing the Pinion Seal 39 Bearing Cup Figure 16 Removing the Inner Bearing Cap...
Page 261: ...F7475...
Page 267: ...B Button Moved Out of Bearing Bore F5791...
Page 294: ...NOTES...
Page 300: ...NOTES...
Page 318: ...NOTES...
Page 322: ...SR207LN2 EDS...
Page 324: ......
Page 326: ...OVERHEAD OILING AND RETURN MAIN OIL GALLERY N30005 6A2 J EDS...
Page 368: ...103 153 127 V1200...
Page 370: ......
Page 372: ......
Page 374: ...F9375 Figure 7 Engine Lubrication Diagram Engines Without Balance Shaft...
Page 376: ...Figure 9 Engine Lubrication Diagram Engines With Balance Shaft...
Page 399: ...V2974...
Page 410: ......
Page 412: ...195 196 201 174 252 163 165 164 244 3706r3924...
Page 452: ......
Page 454: ...163 164 V1202...
Page 456: ...20 21x 302 210 4 0 41 2 5 2 5 1 2 51 4 2 e3 54 3 9 252 252 S 255 255 25 6 256 209 V1196...
Page 458: ...100 1 8 4 185 183 177 v 75 201 3706r1204...
Page 460: ......
Page 510: ......
Page 512: ...V2131...
Page 514: ...110 106 106 103 90 93 89 88 87 86 v 7 7 7 7 j A _ 111 f t 2 a a s 53 49 L 47 46 3706r4751...
Page 516: ...259 260 150 237 S lM 180 167180 J 1 82 183 170 169 1 1 78 1 7 9 213212 2 0 7 205 r i 3706r4752...
Page 566: ...NOTES...
Page 574: ...NOTES...
Page 618: ...SPECIAL TOOLS...
Page 620: ...NOTES...
Page 672: ......
Page 682: ......
Page 686: ......
Page 694: ...RH0213 4L60 E...
Page 695: ...657 659 m i J 8092 H J 34196 4 3 34196 5 657 658 665 J 23907 J 7004 1 J 8092 RH0214 4L60 E...
Page 696: ...J 8092 J 34196 4 33 31 J 8092 RH0215 4L60 E...
Page 697: ...SPECIAL TOOLS...
Page 698: ...SPECIAL TOOLS...
Page 758: ...RH0194 4L80 E...
Page 764: ......
Page 770: ...SPECIAL TOOLS...
Page 771: ...SPECIAL TOOLS CONT...
Page 772: ......
Page 775: ......
Page 776: ......
Page 785: ......
Page 804: ...NOTES...
Page 806: ......
Page 808: ......
Page 822: ...3707r5079...
Page 840: ......
Page 848: ...NOTES...
Page 852: ......
Page 860: ...F5435...
Page 866: ......
Page 878: ...F9167...
Page 882: ...16 FrontOutputShaft 18 DrivtQNr 19 DrivenGm t 20 DriveChain 22 FrontOutputBearing V2836...
Page 890: ...F9168...
Page 908: ......
Page 919: ......