YOKE 1911831 - Caterpillar

(1) Camshaft drive gears.(2) Tachometer drive adapter or plate (6).(3) Camshaft idler gears.(4) Bore in bearings (after assembly) ... 75.000 0.055 mm (2.9528 .0022 in.) Diameter of shafts (new) ... 74.900 0.015 mm (2.9488 .0006 in.)(5) Cluster idler gear.(6) Plate(s).(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 tachometer drive adapter (2) (on left side of engine) and plate (6) (on right side of engine) to hold camshaft drive gears (1) to each camshaft.d. Tighten bolts (7) in steps to a torque of 100 15 N m (75 11 lb.ft.)e. Hit the face of plate (6) or adapter (2), then tighten the bolts to a torque of ... 100 15 N m (75 11 lb.ft.)f. Again hit the face of plate (6) or adapter (2) and again tighten the bolts to a torque of ... 100 15 N m (75 11 lb.ft.) If necessary, repeat Step 7f until the bolts hold torque (can not 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.