Measuring Clutch Pack Height

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Fig 1: Measuring Clutch Pack Height

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure The DT-48213 gauge applies a predetermined amount of pressure to the clutch pack in order to properly measure the clutch pack height. Do not use any other method than what is outlined below. Micrometers or depth gauges may also be used in conjunction with the DT-48213 gauge to measure the clutch pack height. Two variations are available to measure clutch pack height, outside measurement or inside measurement. Either variation will determine the correct height.
1	Transfer Case Four Wheel Drive Clutch Pressure - Friction - Plates (Qty: 8) NOTE: Install the friction and steel clutch plates into the DT-48213 gauge , alternating until 8 friction plates and 7 steel plates are installed. Special Tools DT-48213 Clutch Pack Height Gauge For equivalent regional tools, refer to Special Tools .
2	Transfer Case Four Wheel Drive Clutch Pressure - Steel - Plates (Qty: 7) Procedure 1 - Outside Measurement: Tighten the DT-48213 gauge until the upper portion of the tool contacts the lower portion of the tool. The screw will be flush with the bottom surface of the tool to indicate the tool has fully compressed the clutch plates. Using an outside caliper, measure the total combined height of the clutch pack and the DT-48213 gauge , dimension a. Subtract the thickness of both the upper and lower portion of the DT-48213 gauge , 14 mm (0.551 in), and record the results. Repeat the process in 2 additional locations, 120 degrees from each other. The average of the 3 measurements is the clutch pack height. Procedure 2 - Inside Measurement: Tighten the DT-48213 gauge until the upper portion of the tool contacts the lower portion of the tool. The screw will be flush with the bottom surface of the tool to indicate the tool has fully compressed the clutch plates. Using an inside caliper, measure the height of the clutch pack, dimension b, and record the results. Repeat the process in 2 additional locations, 120 degrees from each other. The average of the 3 measurements is the clutch pack height. NOTE: Install the friction and steel clutch plates into the DT-48213 gauge , alternating until 8 friction plates and 7 steel plates are installed. Special Tools DT-48213 Clutch Pack Height Gauge

Callout

Component Name

Preliminary Procedure

The DT-48213 gauge applies a predetermined amount of pressure to the clutch pack in order to properly measure the clutch pack height. Do not use any other method than what is outlined below.
Micrometers or depth gauges may also be used in conjunction with the DT-48213 gauge to measure the clutch pack height.
Two variations are available to measure clutch pack height, outside measurement or inside measurement. Either variation will determine the correct height.

Transfer Case Four Wheel Drive Clutch Pressure - Friction - Plates (Qty: 8)

NOTE:

Install the friction and steel clutch plates into the DT-48213 gauge , alternating until 8 friction plates and 7 steel plates are installed.

Special Tools
DT-48213 Clutch Pack Height Gauge
For equivalent regional tools, refer to Special Tools .

Transfer Case Four Wheel Drive Clutch Pressure - Steel - Plates (Qty: 7)

Procedure 1 - Outside Measurement:

Tighten the DT-48213 gauge until the upper portion of the tool contacts the lower portion of the tool. The screw will be flush with the bottom surface of the tool to indicate the tool has fully compressed the clutch plates.
Using an outside caliper, measure the total combined height of the clutch pack and the DT-48213 gauge , dimension a. Subtract the thickness of both the upper and lower portion of the DT-48213 gauge , 14 mm (0.551 in), and record the results.
Repeat the process in 2 additional locations, 120 degrees from each other.
The average of the 3 measurements is the clutch pack height.

Procedure 2 - Inside Measurement:

Tighten the DT-48213 gauge until the upper portion of the tool contacts the lower portion of the tool. The screw will be flush with the bottom surface of the tool to indicate the tool has fully compressed the clutch plates.
Using an inside caliper, measure the height of the clutch pack, dimension b, and record the results.
Repeat the process in 2 additional locations, 120 degrees from each other.
The average of the 3 measurements is the clutch pack height.

NOTE:

Install the friction and steel clutch plates into the DT-48213 gauge , alternating until 8 friction plates and 7 steel plates are installed.

Special Tools
DT-48213 Clutch Pack Height Gauge