Air Conditioning Clutch Replacement (LM2)

Removal Procedure

1. Remove the charge air cooler, air conditioning condenser, engine cooler fan and engine radiator as an assembly. Charge Air Cooler, Condenser, Fan, and Radiator Assembly Removal and Installation

Air Conditioning Clutch Replacement (LM2) — figure 1

2. Engine Front Cover Bolt (1) » Remove
3. Engine Front Cover (2) » Remove

Air Conditioning Clutch Replacement (LM2) — figure 2

4. Rotate the accessory drive primary belt tensioner (1) clockwise to release the drive belt tension.
5. Slide the accessory drive primary belt (2) off of the belt idler pulley and slowly release the accessory drive primary belt tensioner (1).
6. Remove the accessory drive primary belt (2) from the air conditioning compressor pulley.

Air Conditioning Clutch Replacement (LM2) — figure 3

7. Use the appropriate size socket to hold the air conditioning compressor shaft (1), and the appropriate size wrench to turn air conditioning clutch drive plate (2) counterclockwise to loosen and remove.

Air Conditioning Clutch Replacement (LM2) — figure 4

Note

The air conditioning clutch shim count will vary for each air conditioning compressor. Be sure to verify the number of shims once the clutch is removed.

8. Air Conditioning Compressor Pulley Bearing Retaining Ring (1) » Remove
9. Air Conditioning Clutch Shim(s) (2) » Remove

Air Conditioning Clutch Replacement (LM2) — figure 5

10. Air Conditioning Compressor Pulley (1) » Remove

Air Conditioning Clutch Replacement (LM2) — figure 6

11. Air Conditioning Clutch Coil Retaining Ring (1) » Remove
12. Disconnect the electrical connector.
13. Unclip the wiring harness (3) from the air conditioning compressor bracket (2).

Air Conditioning Clutch Replacement (LM2) — figure 7

14. Air Conditioning Compressor Clutch Coil (1) » Remove Installation Procedure

15. Air Conditioning Compressor Clutch Coil (1) » Install

16. Clip the wiring harness (3) into the air conditioning compressor bracket (2).

17. Connect the electrical connector.

18. Air Conditioning Clutch Coil Retaining Ring (1) » Install

19. Air Conditioning Compressor Pulley (1) » Install

20. Air Conditioning Compressor Pulley Bearing Retaining Ring (1) » Install

Note

Use the original shim count as a starting point to determine the proper air gap for the air conditioning clutch plate.

7. Install the air conditioning clutch shim(s) (2) as needed to achieve the appropriate air gap of 0.16–0.41 mm (0.006–0.016 in).

Air Conditioning Clutch Replacement (LM2) — figure 8

8. Air Conditioning Compressor Clutch Drive Plate (1) » Install and hand tighten
9. Measure the air gap between air conditioning clutch drive plate (1) and the air conditioning compressor pulley (2) using the appropriate feeler gauge (3).
10. If the air gap is out of range remove the air conditioning clutch drive plate, and add or remove shim(s) as need to achieve the appropriate air gap.
11. Repeat steps 8, 9, and 10 as needed to achieve the appropriate air gap.

Caution

Refer to Component Fastener Tightening Caution.

12. Use the appropriate size socket to hold the air conditioning compressor shaft (1), and the appropriate size wrench to turn air conditioning clutch drive plate (2) clockwise to tighten. Fastener Specifications

13. Install the accessory drive primary belt (2) to the vehicle.

14. Rotate the accessory drive primary belt tensioner (1) clockwise.

Note

Ensure the proper routing of the accessory drive primary belt.

15. Install the accessory drive primary belt (2) around all pulleys.

16. Slowly release the accessory drive primary belt tensioner (1).

17. Engine Front Cover (2) » Install

Caution

Fastener Caution.

18. Engine Front Cover Bolt (1) » Install and tighten — Fastener Specifications
19. Install the charge air cooler, air conditioning condenser, engine cooler fan and engine radiator as an assembly. Charge Air Cooler, Condenser, Fan, and Radiator Assembly Removal and Installation