3126B and 3126E Truck Engines Caterpillar


Gear Group (Front)

Usage:

3126B 1AJ



Illustration 1g01133392

(1) Camshaft idler gear

Distance between the front of the bearing face and the front of the gear face (B) ... 1.08 ± 0.25 mm (0.043 ± 0.010 inch)

Diameter of new shaft (A) ... 79.146 ± 0.013 mm (3.1160 ± 0.0005 inch)

(2) Camshaft gear

(3) Tighten the bolts of the camshaft idler gear to the following torque. ... 70 ± 15 N·m (50 ± 11 lb ft)

(4) Align the timing marks on the camshaft idler gear (1) with the holes on the camshaft (2) and the crankshaft gear (5).

(5) Crankshaft gear

(6) Oil pump drive gear

(7) Apply 9S-3263 Thread Lock Compound to the threads of the oil pump idler gear bolt. Tighten the bolt to the following torque. ... 70 ± 15 N·m (50 ± 11 lb ft)

(8) Oil pump idler gear

Distance between the rear of the bearing face and the rear of the gear face (C) ... 0.75 ± 0.25 mm (0.030 ± 0.010 inch)

Diameter of new shaft (D) ... 28.644 ± 0.013 mm (1.1277 ± 0.0005 inch)

Caterpillar Information System:

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