Exhaust Camshaft, Follower, and Adjuster Install

WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

Install the hydraulic element lash adjusters into their bores in the cylinder head. Apply lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent to hydraulic element lash adjuster.

Fig 1: View Of Hydraulic Element Lash Adjusters
Courtesy of GENERAL MOTORS CORP.
Lubricate the valve tips with GM P/N 12345501 (Canadian P/N 992704) or equivalent.

Fig 2: Lubricating Valve Tips
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IMPORTANT: Used roller followers must be returned to the original position on the camshaft. If the camshaft is being replaced, the roller followers actuated by the camshaft must also be replaced.
Position the roller followers on the tip of the valve stem and on the lash adjustor, apply lubricant GM P/N 12345501 (Canadian P/N 992704) or equivalent.

Fig 3: Identifying Exhaust Camshaft Roller Followers
Courtesy of GENERAL MOTORS CORP.
Set the exhaust camshaft on top of the roller followers in the camshaft bearing journals. Lubricate with GM P/N 12345501 (Canadian P/N 992704) or equivalent.

Fig 4: View Of Camshaft & Bearing Caps
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NOTE: Refer to Fastener Notice in Cautions and Notices.
Install the camshaft bearing caps and hand start the camshaft cap bolts.
The timing chain sprocket alignment notch should be oriented to the 2 o' clock position.

Fig 5: Identifying Timing Chain Sprocket Alignment Notch
Courtesy of GENERAL MOTORS CORP.
Tighten the camshaft bearing cap bolts in increments of 3 turns until they are seated, lubricate.
Tighten: Tighten the camshaft bearing caps to 10 N.m (89 lb in).