C2.2 Engine and C1.5 Generator Set Caterpillar

Illustration 1	g00836394

(1) Timing mark on the camshaft gear

(2) Timing mark on the idler gear

(3) Idler gear

(4) Timing mark on the camshaft gear

Minimum backlash for all gears ... 0.08 mm (0.003 inch)

Maximum backlash for all gears ... 0.25 mm (0.010 inch)

Note: If the backlash is greater than the maximum backlash, replace the camshaft gear, the idler gear and the crankshaft gear.

When the idler gear is installed on the shaft of the oil pump, align a timing mark on idler gear (4) with the timing mark on crankshaft gear (2). Also, align the other timing mark on idler gear (4) with the timing mark on camshaft gear (3).