Rocker Arm Shaft/Rocker Arm/Lash Adjuster: Inspection

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Rocker Arms and Shafts

Courtesy of DAIMLERCHRYSLER CORP.

The rocker arm shafts are hollow and are used as lubrication oil ducts. The rocker arm and shaft assembly on the right side of the engine has an oil passage hole from the cylinder head located at the third rocker shaft support pedestal. The rocker arm and shaft assembly on the left side of the engine has an oil passage hole from the cylinder head located at the second rocker shaft support pedestal.

NOTE: To prevent air ingestion into lash adjusters, avoid turning rocker arm assembly upside down.

CAUTION: Do not allow rocker arm assembly to rest on lash adjusters, as damage may occur to lash adjuster and plastic retainer.

The intake and exhaust rocker arms are different. They should be identified before disassembling the assembly. See Fig 1.

Fig 2: Rocker Arm Assembly

Courtesy of DAIMLERCHRYSLER CORP.

1 - RETAINER

2 - SWIVEL PAD

3 - ROLLER

Check rocker arms for wear or damage. See Fig 2:

Roller scuffing or wear
Shaft bore scuffing or wear
Swivel pad on lash adjuster missing or broken
Rocker arm showing signs of fatigue or cracking
Roller axle protruding from arm

Replace assembly as necessary if any rocker arms shows signs of wear.

CAUTION: Do Not remove lash adjuster from rocker arm assembly. Damage to the adjuster and rocker arm will result.