6
78 Workshop Manual, TSD3450E, Issue 1
2800
How to check the position of the timing gears Operation 6-3
Fuel injection timing and the operation of the rocker valves depends on the correct alignment of the timing
gears. When the timing mark on the camshaft gear (A1) is aligned with the mark on the gear case, the ‘V’ on
the crankshaft must also be aligned exactly with the line (A2) on the idler gear. At this position the piston of
cylinder number 1 is at top dead centre (TDC). This can be confirmed by the insertion of the timing bolt into
the flywheel as described in Timing gears - To remove and to fit, Operation 6-2.