Timing Chain and Sprockets Installation

Tools Required

J 5590 Pinion Bearing Race Installer - Rear

Install the crankshaft balancer key into the crankshaft keyway.

Fig 1: Installing Crankshaft Balancer Key
Courtesy of GENERAL MOTORS CORP.

The crankshaft balancer may should be parallel to the crankshaft or with a slight incline.
Align the keyway of the crankshaft sprocket with the crankshaft balancer key.
CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
Use the J 5590 in order to install the crankshaft sprocket.

Fig 2: Aligning Keyway Of Crankshaft Sprocket
Courtesy of GENERAL MOTORS CORP.
Rotate the crankshaft until the crankshaft sprocket alignment mark is at the 12 o'clock position.
Important: Install the camshaft sprocket with the alignment mark at the 6 o'clock position.
Install the camshaft sprocket and the camshaft timing chain.

Fig 3: Installing Camshaft Sprocket
Courtesy of GENERAL MOTORS CORP.
Lock to ensure that the crankshaft sprocket is aligned at the 12 o'clock position and camshaft sprocket is aligned at the 6 o'clock position.

Fig 4: Locking Crankshaft Sprocket
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

Important: Do not use a hammer to install the camshaft sprocket onto the camshaft. To do so may dislodge the expansion cup plug, camshaft rear bearing hole.
Install camshaft sprocket bolts.

Fig 5: Installing Camshaft Sprocket Bolts
Courtesy of GENERAL MOTORS CORP.

Tighten

Tighten the camshaft sprocket bolts to 25 N.m (18 lb ft).
Install the crankshaft position sensor reluctor ring.
1. 8.1. Align the keyway on the crankshaft position sensor reluctor ring with the crankshaft balancer key in the crankshaft.
2. 8.2. Use the J 5590 in order to push the crankshaft position sensor reluctor ring onto the crankshaft until completely seated against the crankshaft sprocket.
Fig 6: Installing Crankshaft Position Sensor Reluctor Ring
Courtesy of GENERAL MOTORS CORP.