
Service Information
2020 Chevrolet Silverado 2500 HD/3500 HD - 4WD |
Silverado 2500HD/3500HD Service Manual (13188072) |
Document ID: 5670356
Rotating Clutch, Gear, and Shaft Shell Assembly Assemble
Single Use Fasteners and Components- Turbine Shaft Seal
- Turbine Shaft Seal[5x]
Special Tools- DT-03289-20 Holding Fixture
- DT-36850 Transjel Lubricant
- DT-52090 Rotating Shell Assembly Lift Adapter Bar
- DT-52678 Turbine Shaft Rear Seal Installer
- DT-52680 Turbine Shaft Upper Seal Installer
- DT-52700 Clutch Pack Rotation Fixture
- J-45053 Universal Clamp Press
Equivalent regional tools:Special Tools
Assemble Procedure

- Direct Overdrive Internal Gear Retaining Ring(2)@1-2-3-4-5-6-Reverse Clutch Hub(1)»Install
- Reaction Internal Gear(3)@»1-2-3-4-5-6-Reverse Clutch Hub(1)Install
- Direct Overdrive Internal Gear Retaining Ring(4)@1-2-3-4-5-6-Reverse Clutch Hub(1)»Install

- Using the DT-03289-20 Holding Fixture (1), and DT-52700 Clutch Pack Rotation Fixture (2), install the following components as shown.
- Place the 1-2-3-4-5-6-reverse clutch hub (3) in the DT-52700 Clutch Pack Rotation Fixture (2).
Note: Ensure proper orientation.
- Reaction Internal Gear Thrust Bearing(4)»Install
- Reaction Carrier(5)»Install

- Align clutch fiber plate teeth indicated by arrow for easier installation.
- Input Internal Gear(1)@Triple Clutch Housing(2)»Install
- Rotate input internal gear (1)back and forth until fully seated.

- Reaction Sun Gear(1)»Install
- Input Sun Gear(2)»Install
- Input Carrier(3)»Install
- Apply DT-36850 Transjel Lubricant to input carrier thrust bearing (4) to center the bearing on the input carrier.
Note: Ensure proper orientation.
- Input Carrier Thrust Bearing(4)»Install
- Hold the input internal gear where indicated by arrow, then install the triple clutch housing (5).

- Direct Overdrive Carrier(1)»Install
Note: Ensure proper orientation.
- Direct Overdrive Sun Gear(2)»Install
Note: Ensure proper orientation.
- Direct Overdrive Sun Gear Thrust Bearing(3)»Install

- Turbine Shaft(1)»Install

- Output Carrier Internal Gear(1)»Install
- Output Carrier Internal Gear Retaining Ring(2)»Install

- Apply DT-36850 Transjel Lubricant to a NEW turbine shaft seal (3).
- When installing the turbine shaft seal, movement of the seal pushing tool should be one continuous movement down the shaft, and should not last more than 2 seconds to prevent overstretching of the turbine shaft seal (3).
- Set the DT-52678-3 Turbine Shaft Rear Seal Installer (1) on the turbine shaft, then using DT-52678-2 Turbine Shaft Rear Seal Pusher (2), install the NEW turbine shaft seal (3).
- After the turbine shaft seal has been installed, install the DT-52678-1 Turbine Shaft Rear Seal Sizer (4) over the turbine shaft seal as shown.
- The DT-52678-1 Turbine Shaft Rear Seal Sizer (4) should stay installed for at least 5 minutes before removed.

Note: Ensure proper orientation.
- Output Sun Gear Thrust Bearing(1)»Install
- Place reaction carrier hub retaining ring (2) loosely on assembly. Do not install at this point.
- Output Carrier Internal Gear Transfer Shell(3)»Install

- Install the upper part of DT-52700 Clutch Pack Rotation Fixture (1), and the 2 nuts as shown.

- Rotate the DT-52700 Clutch Pack Rotation Fixture (2) 180 degrees and lock in place with DT-03289-20 Holding Fixture locking pin (1).

- Reaction Carrier Hub Retaining Ring(1)@Output Carrier Internal Gear Transfer Shell(2)»Install

- Install the J-45053 Universal Clamp Press (1), and DT-52090 Rotating Shell Assembly Lift Adapter Bar (2) to the rotating clutch, gear, and shaft shell assembly (4) as shown.
- Support the rotating clutch, gear, and shaft shell assembly with an overhead hoist attached to the DT-52090 Rotating Shell Assembly Lift Adapter Bar (2).
- Remove the lower part of DT-52700 Clutch Pack Rotation Fixture (3), and the 2 nuts as shown.
- Move the rotating clutch, gear, and shaft shell (4) away from the DT-52700 Clutch Pack Rotation Fixture (5).
- Rotate the DT-52700 Clutch Pack Rotation Fixture (5) 180 degrees and lock in place.

- Lower the rotating clutch, gear, and shaft shell assembly (1) onto the DT-52700 Clutch Pack Rotation Fixture (2), and remove the J-45053 Universal Clamp Press (3), and DT-52090 Rotating Shell Assembly Lift Adapter Bar (4).

- 1-2-3-4-5-6-Reverse Clutch Hub(1)»Remove
- Reaction Internal Gear Thrust Bearing(2)»Remove
- Reaction Carrier Hub Retaining Ring(3)»Remove
- Reaction Carrier(4)»Remove
- Reaction Sun Gear(5)»Remove

- Apply DT-36850 Transjel Lubricant to the NEW turbine shaft seals (3).
- When installing the turbine shaft seals (3), movement of the seal pushing tool should be one continuous movement down the shaft, and should not last more than 2 seconds to prevent overstretching of the turbine shaft seals.
- Set the DT-52680-3 Turbine Shaft Upper Seal Installer (1) to the depth for each seal indicated by arrow, then using DT-52680-2 Turbine Shaft Upper Seal Pusher (2) install NEW turbine shaft seal (3).
- Install the four remaining NEW turbine shaft seals.
- After all seals have been installed, install the DT-52680-1 Turbine Shaft Upper Seal Sizer (4) over all of the seals as shown.
- The DT-52680-1 Turbine Shaft Upper Seal Sizer (4) should stay installed for at least 5 minutes before removed.

- After the DT-52680-1 seal sizer has been removed, install the following components.
- Reaction Sun Gear(1)»Install
- Reaction Carrier(2)»Install
- Reaction Carrier Hub Retaining Ring(3)»Install
Note: Ensure proper orientation.
- Reaction Internal Gear Thrust Bearing(4)»Install
- 1-2-3-4-5-6-Reverse Clutch Hub(5)»Install

- Reinstall the DT-52680-1 Turbine Shaft Upper Seal Sizer (1). The seal sizer should stay installed until stator shaft support installation.

Warning: Ensure the reaction carrier hub retaining ring is fully seated before rotating the rotating clutch, gear, and shaft shell assembly. If the retaining ring is not fully seated, the assembly may separate as it is being rotated, which could result in component damage or bodily injury.
- Install the J-45053 Universal Clamp Press (1), and DT-52090 Rotating Shell Assembly Lift Adapter Bar (2) to the rotating clutch, gear, and shaft shell (3) as shown.
- Remove the rotating clutch, gear, and shaft shell (3) with an overhead hoist from the DT-52700 Clutch Pack Rotation Fixture (5).
- Remove the DT-03289-20 Holding Fixture locking pin (4), and remove the DT-52700 Clutch Pack Rotation Fixture (5).