Remove the fan. Refer to Disassembly and
Assembly, "Fan - Remove and Install".
Remove the front cover. Refer to Disassembly and
Assembly, "Front Cover - Remove".
Rotate the crankshaft until the timing marks on the
crankshaft gear, the camshaft gear, and the fuel
injection pump gear are aligned.
The timing marks on the Idler gear may not be
aligned. This is caused by the difference in the
speed of the rotation of the idler gear.
Remove bolt (1) and the washer on camshaft gear (2).
Install Tool (A) and remove the camshaft gear.
Do not lose the key from the camshaft gear.
Inspect the camshaft gear for wear and damage.
Replace the gear, if necessary.
Install camshaft gear (2).
When you install the camshaft gear, ensure that
the teeth that have the timing marks are facing
toward the front. Also, ensure that the key is
aligned properly in the keyway. If necessary, tap
the gear with a soft hammer in order to seat the
key in the keyway.
If necessary, remove the idler gear in order to align the
gear teeth correctly.
Install bolt (1). Tighten the bolt to a torque of 78 Nm
Ensure that the timing marks on the camshaft
gear, the crankshaft gear, and the fuel injection
pump gear are aligned.