Timing Components: Service and Repair

VALVE TIMING

STANDARD PROCEDURE - LOCKING ENGINE 90 DEGREES AFTER TDC
1. Disconnect negative battery cable.
2. Remove the vibration damper.

NOTE: Rotate the engine by the front crankshaft bolt until the witness mark next to the bolt in the front crankshaft hub reaches the 12 o'clock position, or TDC. Rotate the engine another 1/4 turn to the right, rotating the witness mark to the three o'clock position, or 90 degrees ATDC.





3. Rotate engine by hand until the witness mark in the front crankshaft hub reaches the 3 O'clock position (Fig. 145).
4. Raise and support the vehicle.
5. Remove the splash shield.

CAUTION: The engine block, flywheel, and/or flex plate, has an alignment hole to assist in properly aligning the crankshaft before service. Failure to properly align the crankshaft may result in improper valve timing and engine damage.





6. Insert the long end of a 6 mm Allen wrench into the 90 degree ATDC access hole on the right lower side of the engine block. The engine is aligned properly when the short end of the Allen wrench is parallel to the rear of the engine block. (Fig. 146).





7. If the small end of the Allen wrench protrudes away from the engine block (alignment hole in the flywheel, flex plate too low) rotate the crankshaft hub bolt clockwise in small increments until proper alignment is obtained (Fig. 147).

CAUTION: DO NOT rotate the engine counterclockwise.





8. If the small end of the Allen wrench is too close to the engine block (alignment hole in the flywheel, flex plate too high), remove the Allen wrench and rotate the crankshaft around again to the three O'clock position, or 90 degree ATDC, and begin the alignment sequence again (Fig. 148).
9. Lower the vehicle.
10. Remove engine cover.





11. Remove the exhaust camshaft access plug in cylinder head cover/intake manifold (Fig. 149).

CAUTION: DO NOT force the pin into the access hole. VM.1053 should screw in by hand and mount flush with the intake manifold/cylinder head cover. If the tool can not be inserted, remove the tool and rotate the engine another 180 degrees to the 3 O'clock position and try again.





12. Insert VM.1053 to lock exhaust camshaft in position (Fig. 150).





13. Remove the left plug in cylinder head cover/intake manifold (Fig. 151).





14. Insert VM.1052 to lock intake camshaft in position (Fig. 152).
15. At this point the timing belt can be removed for service.
16. After engine service is completed and timing belt reinstalled, remove both camshaft locking pins from cylinder head cover/intake manifold.





17. Install both camshaft access plugs. Tighten the access plugs to 10.8 Nm (95 inch lbs.) (Fig. 153).
18. Install engine cover.
19. Connect negative battery cable.