3044C Industrial Engine and Engines for Caterpillar Built Machines Caterpillar

Illustration 1	g00988013

(1) Camshaft gear

(2) Idler gear

End play of idler gear

Standard at assembly ... 0.05 to 0.20 mm (0.0020 to 0.0079 inch)

Service limit ... 0.35 mm (0.0138 inch)

Clearance between idler gear bushing and shaft

Standard at assembly ... 0.009 to 0.050 mm (0.0004 to 0.0020 inch)

Service limit ... 0.100 mm (0.0039 inch)

(3) Fuel Injection pump gear

Tighten the bolts for the fuel injection pump gear to the following torque.

Naturally aspirated engines ... 59 to 69 N·m (43 to 51 lb ft)

Turbocharged engines ... 83 to 98 N·m (62 to 72 lb ft)

(4) Crankshaft gear

(5) Oil pump gear

(6) Tighten the thrust plate bolts for the idler gear to the following torque. ... 29 to 39 N·m (21 to 29 lb ft)

(7) Tighten the jam nut for the oil pump gear to the following torque. ... 28 to 38 N·m (21 to 28 lb ft)

Backlash for all gears

Standard at assembly ... 0.03 to 0.18 mm (0.0012 to 0.0071 inch)

Service Limit ... 0.25 mm (0.0098 inch)