Installation Procedure

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

Collapse the primary timing chain tensioner using the following procedure:
1. 1.1. Rotate the ratchet release lever (2) clockwise and hold.
2. 1.2. Collapse the tensioner shoe (1) and hold.
3. 1.3. Release the ratchet lever.
Slowly release the pressure on the shoe, until the ratchet lever moves to the first detent and a "click" is heard and felt.
Collapse the tensioner shoe and hold.

Fig 1: Collapsing Priming Timing Chain Tensioner
Courtesy of GENERAL MOTORS CORP.
Insert a pin through the hole in the release lever in order to lock the tensioner shoe in the collapsed position.

Fig 2: Locking Tensioner Shoe In Collapsed Position
Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to FASTENER NOTICE in Cautions and Notices.

Important: Ensure the tensioner release lever is facing outward.
Install the primary timing chain tensioner (1) and retaining bolts.
Tighten

Tighten the primary timing chain tensioner bolts to 25 N.m (18 lb ft).
Ensure the crankshaft is at TDC of the # 1 cylinders compression stroke.

Fig 3: Installing Primary Timing Chain Tensioner
Courtesy of GENERAL MOTORS CORP.
Remove the pin holding the tensioner to tighten any slack in the timing chain.
Verify correct timing chain and timing mark alignments. Refer to Setting Camshaft Timing .
Install the engine front cover. Refer to Engine Front Cover Replacement .

Fig 4: Removing Locking Pin From Tensioner
Courtesy of GENERAL MOTORS CORP.
Remove the J 42038 from the camshafts on the left and right cylinder heads.
Install the camshaft covers. Refer to Camshaft Cover Replacement - Left and Camshaft Cover Replacement - Right .

Fig 5: Identifying J 42038
Courtesy of GENERAL MOTORS CORP.