EXPERTEC TSB (87-1-2)

Publication date: 1986-10-21
Reference number: 87-1-2

EXPERTEC TSB

TECHNICAL SERVICE BULLETIN

Reference Number(s): 87-1-2, Date of Issue: 10/21/86

A/C COMPRESSOR MOAN - CHECK BELT TENSION/BRACKET

Model(s): 1982-1987 Buick V6 Engines, Less Single Drive (Serpentine) Belt

Bullettin No.: Buick 87-1-2

Date: 10/21/1986

SERVICE INFORMATION

Many A/C related noises and vibrations at idle and off idle can be corrected by proper tensioning of the air conditioning belt. If such a condition, with the A/C on, is reported, the belt tension should first be checked with an approved belt tension gage such as Kent-Moore J-23600 and tensioned per chart. When replacing the A/C belt or concluding a repair that requires removal or loosening of the A/C belt, care should be exercised to adjust belt back to proper tension.

Another cause of noise or vibration that should not be overlooked iscompressor mounting bracket bolts. Make sure that bolts are to proper torque. Proper bolt torques also apply to single drive (serpentine) belt designs.

Fig 1: V6 A/C BELT TENSION CHART