Chevrolet Silverado / GMC Sierra. Manual — part 2947
TRANSFER CASE ASSEMBLE
Input Shaft and Planetary Assembly Installation
4
Transfer Case Two/Four Wheel Drive Actuator Cam
Retaining Ring
5
Transfer Case Two/Four Wheel Drive Actuator Cam
Spacer
6
Transfer Case Two/Four Wheel Drive Actuator Cam
7
Transfer Case High/Low Shift Fork - Service - Pin
Tip:
Apply a small amount of threadlock GM P/N
12345493 (Canadian P/N 10953488), or
equivalent, to the shaft of the pin before
installation.
Press the pin into the control actuator shaft using
a brass drift until bottom.
8
Transfer Case Shift Fork Shaft Guide Screw
Tip: Apply threadlock GM P/N 12345493 (Canadian
P/N 10953488), or equivalent, to the screw threads.
Tighten: 5 N.m (44 lb in).
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 46: Input Shaft and Planetary Assembly Installation
Courtesy of GENERAL MOTORS CORP.
Input Shaft and Planetary Assembly Installation
Callout
Component Name
1
Transfer Case Input Shaft Bearing Assembly
2
Transfer Case Input Shaft Inner Retaining Ring
3
Transfer Case High/Low Planetary Carrier
Assembly
4
Transfer Case Planetary Carrier Sun Gear Thrust
Washer
5
Transfer Case Input Shaft
6
Transfer Case Planetary Carrier Sun Gear Thrust
Washer
7
Transfer Case High/Low Locking Plate
8
Transfer Case High/Low Planetary Carrier
Retaining Ring
9
Transfer Case Input Shaft/Planetary Assembly
10
Transfer Case Input Shaft Bearing Outer Retaining
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Measuring Clutch Pack Height
Fig. 47: Measuring Clutch Pack Height
Courtesy of GENERAL MOTORS CORP.
Measuring Clutch Pack Height
Ring
Callout
Component Name
Tip:
The DT-48213 applies a predetermined amount of pressure to the clutch pack in order
to properly measure the clutch pack height. See Special Tools. Do not use any other
method than what is outlined below.
Micrometers or depth gages may also be used in conjunction with the DT-48213 to
measure the clutch pack height. See Special Tools.
2 variations are available to measure clutch pack height, outside measurement or
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
inside measurement. Either variation will determine the correct height.
1
Transfer Case Four Wheel Drive Clutch Pressure -
Friction - Plates (Qty: 8)
Tip: Install the friction and steel clutch plates into the
DT-48213 , alternating until 8 friction plates and 7 steel
plates are installed. See Special Tools.
2
Transfer Case Four Wheel Drive Clutch Pressure - Steel
- Plates (Qty: 7)
Tip: Install the friction and steel clutch plates into the
DT-48213 , alternating until 8 friction plates and 7 steel
plates are installed. See Special Tools.
Procedure 1 - Outside Measurement:
1. Tighten the DT-48213 until the upper portion of
the tool contacts the lower portion of the tool. See
Special Tools. The screw will be flush with the
bottom surface of the tool to indicate the tool has
fully compressed the clutch plates.
2. Using an outside caliper, measure the total
combined height of the clutch pack and the DT-
48213 , dimension a. See Special Tools. Subtract
the thickness of both the upper and lower portion
of the DT-48213 , 14 mm (0. See Special
Tools.551 in), and record the results.
3. Repeat the process in 2 additional locations, 120
degrees from each other.
4. The average of the 3 measurements is the clutch
pack height.
Procedure 2 - Inside Measurement:
1. Tighten the DT-48213 until the upper portion of
the tool contacts the lower portion of the tool. See
Special Tools. The screw will be flush with the
bottom surface of the tool to indicate the tool has
fully compressed the clutch plates.
2. Using an inside caliper, measure the height of the
clutch pack, dimension b, and record the results.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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