Removal Procedure
- Camshaft Cover - Left Side - Remove - Camshaft Cover Replacement - Left Side
To place the camshafts in a rested position and aid in removal, rotate the engine clockwise using the crankshaft dampener retaining bolt until laser etched flat is facing up.
- CAUTION:
Refer to Torque Reaction Against Timing Drive Chain Caution .
NOTE:Do NOT remove or back out the camshaft position actuator bolt (s). Simply break them loose from their fully-torqued position. The position actuators must stay firmly attached until the retaining tools are in place, but they should be broken loose while the chain is still tight and in position.
Use an opened end wrench on the cast hexagonal portion of the camshafts to hold them in place while breaking the actuator fasteners loose to prevent camshaft rotation.
Loosen both intake and exhaust camshaft position actuator retaining bolts but DO NOT remove.
- Clean off any oil residue on camshaft position actuators.
- NOTE:
Marking the relationship of the timing chain to actuators is critical for timing alignment.
Mark the position of the chain to the camshaft position actuator - intake.
- Mark the position of the chain to the camshaft position actuator - exhaust.
- NOTE:
Do NOT remove or loosen any other camshaft bearing caps at this time, even if you intend to eventually remove the camshaft.
Remove the 5 camshaft front cap bolts (1).
Remove the camshaft front cap (1).
Clean RTV from front cover and cylinder head surface at the indicated locations prior to EN-51333 Timing Chain Retainer Set installation.
Loosen the wingnut (1) to open the clamping area of EN-51333-1 Timing Chain Retainer.
- Install the EN-51333-1 Timing Chain Retainer on the exhaust side front cover and cylinder head by screwing in the bolts (2) on the EN-51333-1 Timing Chain Retainer finger-tight.
Loosen the wingnut (1) to open the clamping area of EN-51333-2 Timing Chain Retainer.
- Install the EN-51333-2 Timing Chain Retainer on the intake side front cover and cylinder head by screwing in the bolts (2) on the EN-51333-2 Timing Chain Retainer finger-tight.
Using a wrench on the cast hexagonal portion of the intake camshaft, rotate the camshaft toward the exhaust camshaft and then release. Repeat this action three times to fully drain the tensioners of oil.
- Rotate the intake camshaft toward the exhaust camshaft and hold.
- Tighten wingnut (1) so EN-51333-1 Timing Chain Retainer closes and firmly grasps timing chain.
Using a wrench on the cast hexagonal portion of the exhaust camshaft, rotate the camshaft toward the intake camshaft and then release. Repeat this action three times to fully drain the tensioners of oil.
- Rotate the exhaust camshaft toward the intake camshaft and hold.
- Tighten wingnut (1) so EN-51333-2 Timing Chain Retainer closes and firmly grasps timing chain.
- NOTE:
The exhaust camshaft position actuator must be removed first to provide enough chain slack to remove the intake position actuator.
Fully remove the camshaft actuator retaining bolt (1) for the exhaust camshaft position actuator.
- CAUTION:
Do not pry against the face of the camshaft position actuators or the position actuator retaining bolts as the position actuators will be damaged.
Position a screwdriver or small pry bar between a camshaft cap and camshaft lobe. Carefully move/pry the camshafts as far as possible toward the rear/flywheel end of the engine.
Slide the camshaft position actuator (1) forward and off the end of the exhaust camshaft.
Tilt the camshaft position actuator (1) forward and out/away from the engine.
- Repeat steps 19-23 to remove the intake camshaft position actuator.
Do NOT overtighten the bolts. The EN-51333-1 Timing Chain Retainer should be able to slide slightly via the slots the bolts go through. This fore/aft movement will allow easier removal and installation of the chain later.
Do NOT overtighten the bolts. The EN-51333-2 Timing Chain Retainer should be able to slide slightly via the slots the bolts go through. This fore/aft movement will allow easier removal and installation of the chain later.
Do NOT tighten the wingnut with a tool of any kind. Firm finger-tightening is sufficient.
Do NOT tighten the wingnut with a tool of any kind. Firm finger-tightening is sufficient.
DO NOT remove the EN-51333 Timing Chain Retainer Set, they are holding the cam chain to maintain the proper timed position.