Air Conditioning Compressor Replacement (LY7)

Fig 1: Air Conditioning Compressor

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Recover the refrigerant. Refer to Refrigerant Recovery and Recharging (With HP5) or Refrigerant Recovery and Recharging (Without HP5) . Remove the drive belt. Refer to Drive Belt Replacement (LE5) or Drive Belt Replacement (LAT) . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the A/C compressor electrical connector. Remove compressor hose assembly. Refer to Air Conditioning Compressor Hose Replacement (LZ4) or Air Conditioning Compressor Hose Replacement (LAT) or Air Conditioning Compressor Hose Replacement (LY7) or Air Conditioning Compressor Hose Replacement (LE5) .
1	A/C Compressor Bolt (Qty: 4) CAUTION: Refer to Fastener Caution . TIP: Tighten the A/C compressor mounting bolts in sequence shown in graphic. Reposition the CRFM if necessary. Tighten: 22 N.m (16 lb ft)
2	A/C Compressor Assembly Procedure 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 oil. Refer to Air Conditioning Compressor Oil Balancing (With HP5) or Air Conditioning Compressor Oil Balancing (Without HP5) . Using J 39400 leak test A/C compressor fittings. Special Tools: J 39400 Electronic Halogen Leak Detector

Callout

Component Name

Preliminary Procedures

A/C Compressor Bolt (Qty: 4)

CAUTION: Refer to Fastener Caution .

TIP:

Tighten: 22 N.m (16 lb ft)

A/C Compressor Assembly

Procedure

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 oil. Refer to Air Conditioning Compressor Oil Balancing (With HP5) or Air Conditioning Compressor Oil Balancing (Without HP5) .
Using J 39400 leak test A/C compressor fittings.

Special Tools:
J 39400 Electronic Halogen Leak Detector