DRIVE GP-FINAL 5385902 - Caterpillar

(1) Camshaft drive gears.(2) Plate or tachometer drive adapter.(3) Camshaft idler gears.(4) Diameter of shafts (new) ... 74.900 0.015 mm (2.9488 .0006 in.) Bore in bearings (after assembly) ... 75.000 0.055 mm (2.9528 .0022 in.)(5) Cluster idler gear.(6) Gear for magneto drive.(7) Bolts that hold camshaft drive gears (1) in position. Install the gears as follows: a. Pin both camshafts and put camshaft drive gears (1) in position on camshaft taper.b. For correct timing, all gear clearance (backlash) must be removed. Turn camshaft drive gears (1) in the same direction as crankshaft rotation and hold in this position.c. Install plate or tachometer drive adapter (2) and gear (6) to hold camshaft drive gears (1) on each camshaft.d. Tighten bolts (7) in steps to a torque of ... 360 50 N m (265 35 lb.ft.)e. Hit bolts (7) and again tighten the bolts to a torque of ... 360 50 N m (265 35 lb.ft.) If necessary, repeat Step 7e until the bolts hold torque (cannot be moved) to make sure the drive gears are in full contact with the taper on the camshafts.(8) Diameter of shaft (new) ... 74.900 0.015 mm (2.9488 .0006 in.) Bore in bearing (after assembly) ... 75.000 0.053 mm (2.9528 .0021 in.)(9) Crankshaft gear.