Compressor Replacement (LZ9)

Fig 1: Compressor Replacement (LZ9)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
NOTE: Refer to Fastener Notice . Fastener Tightening Specifications: Refer to Fastener Tightening Specifications . Preliminary Procedure Recover the refrigerant. Refer to Refrigerant Recovery and Recharging . Remove the drive belt. Refer to Drive Belt Replacement . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the right front fender liner. Refer to Front Wheelhouse Liner Replacement . Remove the radiator air deflector. Refer to Radiator Air Baffle Assemblies and Deflectors . Disconnect the A/C compressor electrical connector.
1	A/C Compressor Hose Nut (Qty: 2) Tip: Remove the A/C compressor hose from the A/C compressor and cap hose. Tighten: 20 N.m (15 lb ft)
2	Sealing Washer Tip: Remove and discard sealing washers. Refer to Sealing Washer Replacement .
3	A/C Compressor Nut Tip: Tighten in sequence with A/C compressor mounting bolts. Tighten: 50 N.m (37 lb ft)
4	A/C Compressor Bolt Tip: Tighten the A/C compressor mounting bolts and nut in sequence. Tighten: 50 N.m (37 lb ft)
5	A/C Compressor Assembly Tip: Use a low viscosity, poly-alkylene glycol (PAG) oil. Use of the incorrect oil can result in compressor failure. When replacing the A/C compressor, balance the compressor. Refer to Compressor Oil Balancing . Using J 39400 , leak test A/C compressor fittings.