Removal & Installation
- Before servicing the vehicle, refer to the Precautions Section.
Remove or disconnect the following:
Negative battery cable
Rotate the crankshaft 60 degrees counterclockwise Before Top Dead Center (BTDC) to prevent valve/piston contact.
- Use a Camshaft Locking tool to hold the camshaft gears in place and loosen the camshaft gear bolt.
- Remove the locking tool from the gears.
Remove the camshaft gear(s).
NOTEBe certain that the camshaft is not under load from the lifters.
Gradually loosen the camshaft bearing cap bolts sequentially, starting in the center and working outward in a spiral. Note the identification marks on the caps.
- Remove the camshaft from the cylinder head.
- Lubricate the camshaft lobes, lifters and bearing journals with camshaft lubricant.
- Install the camshaft to the cylinder head.
To reduce the lifter load, position the pin on the front of the camshaft as follows:
1 o-clock position: right exhaust camshaft
Place a small amount of Loctite® on the edge of the front bearing cap to ensure a good seal between the cap and surface of the cylinder head. Do not allow the sealer to get into the oil journal of the cap.
WARNINGThe bearing caps must be installed in their original positions.
Install or connect the following:
NOTEMake certain that the camshaft seal is fully seated.
WARNINGA new camshaft gear bolt must be installed. The required tightening method will stretch the bolt making the original bolt unusable.
Camshaft bearing caps. Torque the bolts in sequence starting in the center and working outwards to 71 inch lbs. (8 Nm).
Camshaft gear. Tighten the new bolt to 37 ft. lbs. (50 Nm), plus a 60 degree turn, plus a 15 degree turn.
Timing belt and adjust as needed
- Start the vehicle and verify the engine is running properly.