|Tool||Part Number||Part Name||Qty|
|A||139-7063||Timing Pin Adapter||1|
|B||178-8615||Engine Turning Tool||1|
|E||208-0888||Engine Turning Tool||1|
|F||9S-9082||Engine Turning Tool||1|
Illustration 1 g01450057
Flywheel housing (1) (Typical example)
(2) Timing hole
Illustration 2 g01450067
Flywheel housing (5) (Typical example)
(2) Timing hole
- Only perform this step if you have flywheel housing (1). Remove two bolts (4) and remove cover (3) from flywheel housing (1) in order to open the turning hole.
- Remove the plug from timing hole (2) and install Tool (D) in the timing hole on flywheel housing (1) and flywheel housing (5). The timing hole (2) is located above the turning hole on flywheel housing (1). Use Tool (F) and Tool (C) to turn the engine flywheel for flywheel housing (1). Tool (E) can be used for turning the crankshaft for flywheel housing (5). Turn the flywheel or the crankshaft in the direction of engine rotation. The direction of engine rotation is counterclockwise, as the engine is viewed from the flywheel end. Turn the flywheel or the crankshaft until the timing pin engages with the threaded hole in the flywheel.Note: If the flywheel or the crankshaft is turned beyond the point of engagement, the flywheel must be turned in the direction that is reverse of normal engine rotation. Turn the flywheel or the crankshaft by approximately 30 degrees. Then turn the flywheel or the crankshaft in the direction of normal rotation until the timing pin engages with the threaded hole. This procedure eliminates the backlash from the gears when the No. 1 piston is at the top center position.
- Remove the front valve mechanism cover from the engine.
- The inlet and exhaust valves for the No. 1 cylinder are fully closed if No. 1 piston is on the compression stroke and the rocker arms can be moved by hand. If the rocker arms cannot be moved and the valves are slightly open, the No. 1 piston is on the exhaust stroke.Note: When the actual stroke position is identified, and the other stroke position is needed, remove the timing pin from the flywheel. Then turn the flywheel by 360 degrees in the direction of normal engine rotation and reinstall the timing pin.
Refer to Electronic Troubleshooting, “Engine Speed/Timing Sensor – Calibrate” for the proper procedure to calibrate the electronic injection timing.
This timing calibration should be performed when the following conditions exist:
- Replaced ECM
- Front gear changes
- Replaced major engine components
The timing calibration should also be performed when you are unable to communicate with the old ECM and the ECM has been replaced.