Rear Differential Rebuild

Tiny
MDUDLEY
  • MEMBER
  • 2006 CHEVROLET 2500
  • 6.6L
  • 4 CYL
  • TURBO
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
Attempting to rebuild the rear end. I found a diagram and I think I know which parts I need but I'd like to confirm if you can? Here is the list I have with corresponding part numbers:
2 - Large Inner Pinion Bearing
3 - Ring and Pinion Gear Set
16 - Pinion Nut
17 - Washer for Pinion Nut
18 - Pinion Yoke
19 - Pinion Seal
19 - Pinion Seal Sleeve
20 - Small Outer Pinion Bearing
21 - Collapsible Spacer/Crush Collar
24 - Hub Seal - Single Wheel

https://www.dennysdriveshaft.com/c3391_aam_11.5_inch_14_bolt_rear_gm.html

Is there more that I will need?
Friday, February 7th, 2020 AT 2:25 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

That looks like everything. I have all the directions and specifications for setting it, torque specs, and if you need them I have the directions. However, I will need to know which differential you have.

I attached an exploded view of the rear diff. I believe it is a 10.5 inch. If you look at the pic, the following list correlates with it and identifies all parts.

1 - Brake Pipe Clip
2 - Rear Axle Housing Cover Bolt
3 - Rear Axle Housing Cover
4 - Rear Axle Housing Cover Gasket
5 - Differential Side Pinion Gear
6 - Thrust Washer
7 - Thrust Washer
8 - Differential Pinion Gear
9 - Thrust Washer
10 - Differential Pinion Gear
11 - Differential Pinion Gear Spider
12 - Differential Pinion Gear
13 - Thrust Washer
14 - Thrust Washer
15 - Differential Side Pinion Gear
16 - Thrust Washer
17 - Washer
18 - Differential Ring Gear Bolt
19 - Washer
20 - Differential Bearing Cap Bolt
21 - Differential Adjuster Lock Nut Bolt
22 - Differential Adjuster Lock
23 - Differential Bearing Cap
24 - Differential Bearing Adjuster Nut
25 - Differential Case Bearing
26 - Differential Case
27 - Differential Case Bearing
28 - Differential Bearing Adjuster Nut
29 - Washer
30 - Differential Bearing Cap Bolt
31 - Differential Adjuster Lock Nut Bolt
32 - Differential Adjuster Lock
33 - Differential Bearing Cap
34 - Differential Ring Gear
35 - Pinion Gear Pilot Bearing
36 - Drive Pinion Gear
37 - Pinion Gear Inner Bearing
38 - Rear Axle Housing Vent
39 - Rear Axle Housing
40 - Park Brake Nut
41 - Brake Backing Plate
42 - Washer
43 - Park Brake Bolt
44 - Brake Caliper
45 - Brake Caliper Bolt
46 - Hub Seal
47 - Inner Bearing Assembly
48 - Outer Bearing Retaining Ring
49 - Outer Bearing Assembly
50 - Wheel Bearing Adjuster Nut
51 - Wheel Bearing Adjuster Nut Key
52 - Wheel Bearing Adjuster Nut Key Retainer
53 - Wheel Hub Gasket
54 - Axle Shaft
55 - Rear Axle Shaft Bolt
56 - Brake Rotor
57 - Nut
58 - Wheel Hub
59 - Stud
60 - Rear Axle Housing Drain Plug
61 - Pinion Gear Bearing Spacer
62 - Pinion Gear Bearing Shim
63 - Pinion Gear Bearing Retainer
64 - Pinion Gear Nut
65 - Washer
66 - Pinion Yoke
67 - Pinion Gear Seal
68 - Pinion Gear Outer Bearing
69 - Bolt
70 - Washer
71 - Park Brake Clip
72 - Rear Axle Housing Fill Plug

__________________

Let me know if I can help.

Joe
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Friday, February 7th, 2020 AT 2:44 PM
Tiny
MDUDLEY
  • MEMBER
  • 2 POSTS
Thank you!
The one on the truck is 11.5" and 3.73 ratio. I'd like the directions, etc. If possible! Any other information you need?
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Friday, February 7th, 2020 AT 3:37 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

Attached is the procedure for you.

Roy

Differential Overhaul (11.5 Inch Axle)
Tools Required
J 8092 Universal Driver Handle - 3/4 in - 10
J 22888-D Side Bearing Remover Kit
J 44420 Differential Bearing and Hub Seal Installer

Disassembly Procedure

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1. Remove the differential side bearings by performing the following steps:
1. Install the differential assembly into a vise.
2. Install the J 8107-5 (1) and the J 22888-20A (2) as shown.
3. Remove the differential side bearings using the J 22888-20A.

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2. Remove the gear bolts. Discard the bolts.

Important: The ring gear bolts have right-hand threads.

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3. Remove the ring gear from the differential case. Drive the ring gear off with a brass drift if necessary.

Notice: Refer to Ring Gear Removal Notice in Service Precautions.

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4. Locate the end of the pinion shaft with the pilot hole.

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5. Remove the pinion shaft by performing the following steps:
1. Place a brass drift onto the end of the pinion shaft with the pilot hole.
2. Drive the pinion shaft through the differential case using a hammer and the brass drift.

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6. Remove the retaining ring from the pinion shaft. Discard the retaining ring.

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7. Remove the differential pinion gears and the pinion gear thrust washers by rolling the gears out through the differential case opening.
8. Remove the differential side gears and the thrust washers. Mark the pinion gears top and bottom and the differential side gears left and right.

Assembly Procedure

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1. Install the new retaining onto the pinion shaft.
2. Lubricate the pinion and side gears using axle lubricant. Use the proper fluid. Refer to Fluid and Lubricant Recommendations.
3. Install the differential side gear thrust washers to the differential side gears.
4. Install the differential side gears and thrust washers into the differential case. If the same differential side gears and the thrust washers are being used, install the gears and the thrust washers to their original locations.

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5. Install the differential pinion gears and the thrust washers by performing the following steps:
1. Install the thrust washers to the pinion gears.
2. Position one of the pinion gears with the thrust washer between the differential side gears. If the same differential side gears and the thrust washers are being used, install the gears and the thrust washers to their original locations.
3. Install the second pinion gear with the thrust washer between the differential side gears directly opposite of the first gear.
4. Rotate the differential side gears until the pinion gears and the thrust washers are directly opposite the opening in the differential case.

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6. Install the pinion shaft into the differential case by performing the following steps:
1. Insert the side of the pinion shaft with the pilot hole into the differential case.
2. Slide the pinion shaft through the differential case until the retaining ring is against the differential case.
3. Carefully drive the pinion shaft into the differential case using a hammer and a brass drift. Ensure that the pinion shaft retaining ring is seated in the channel within the differential case.

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7. Install the ring gear to the differential case.

Important: The mating surface of the ring gear and the differential case must be clean and free of burrs before installing the ring gear.

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8. Install the new ring gear bolts. Hand start each bolt in ensure the ring gear is properly installed to the differential case.

Notice: Refer to Fastener Notice in Service Precautions.

Important: The ring gear bolts have right-hand threads.

9. Tighten the ring gear bolts.
Tighten the bolts alternately and in stages, gradually pulling the ring gear onto the differential case.
Tighten the ring gear bolts in sequence to 237 Nm (175 lb ft).

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10. Install the differential side bearings by performing the following steps:
1. In order to protect the differential case, install the J 8107-5 in the case on the side opposite the bearing installation.
2. Install the J 44420 (2) and the J 8092 (1) onto the differential case bearing as shown.
3. Drive the bearing onto the case using the J 44420 and the J 8092.
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Friday, February 7th, 2020 AT 4:33 PM

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