Timing Chain and Sprockets Installation

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

Install the crankshaft sprocket.

Fig 1: Installing Crankshaft Sprocket

Courtesy of GENERAL MOTORS CORP.

Apply prelube GM P/N United States 12345501, GM P/N Canada 992704 or the equivalent to the crankshaft sprocket thrust surface.
Install the timing chain dampener.
CAUTION: Refer to FASTENER NOTICE in Cautions and Notices.
Install the timing chain dampener bolts.

Fig 2: Installing Timing Chain Dampener
Courtesy of GENERAL MOTORS CORP.

Tighten

Tighten the timing chain dampener bolt to 21 N.m (15 lb ft).

Fig 3: Aligning Crankshaft To Timing Chain Dampener
Courtesy of GENERAL MOTORS CORP.
Align the crankshaft timing mark (2) to the timing mark on the bottom of the timing chain dampener (1).
Hold the camshaft sprocket with the timing chain hanging down and install the timing chain to the crankshaft gear.
Align the timing mark on the camshaft gear (4) with the timing mark on top of the timing chain dampener (3).
Align the dowel in the camshaft with the dowel hole in the camshaft sprocket.
Draw the camshaft sprocket onto the camshaft using the mounting bolt.

Fig 4: Installing Camshaft Sprocket

Courtesy of GENERAL MOTORS CORP.

Coat the crankshaft and camshaft sprocket with engine oil.
Tighten

Tighten the bolt to 140 N.m (103 lb ft).