Accessory Drive Belt - Breaks/Comes Off Pulley

Number: 84-92

Section: 6A (VI)

Date: Mar., 1984
Subject: ACCESSORY DRIVE BELTS BREAKING OR COMING OFF ON 3.8L (LC3) V6 AND 5.0L (LG4, L69) V8 ENGINES


Model and Year: 1983-84 IMPALA, CAPRICE, MONTE CARLO, EL CAMINO AND 1983 MALIBU
TO: ALL CHEVROLET DEALERS


The breaking or coming off of accessory drive belts on some subject vehicles may be due to a mismatching of the water pump and crankshaft pulley diameters. This can cause one (1) of the belts to drag in it's groove as the mismatched system tries to drive the belt at two
(2) different speeds.

Water Pump/Crankshaft Pulley:

If the above condition is encountered, verify that the correct pulleys have been installed by referring to the illustration.