STRAP AS-GROUND 1S2342 - Caterpillar

Illustration 1 g01365017
Rear gear train
(1) Ring
(3) Idler gear assembly
(13) Plate Note: Before assembly, it is critical that the taper of the camshaft and the tapered bore of the camshaft drive gear are clean, dry, and free of residue.Refer to Disassembly and Assembly for the installation procedure for the left camshaft drive gear (2). (5) Torque for the bolts ... 140 10 N m (105 7 lb ft) (6) Gear shaft After the sleeve bearing is installed in the gear the sleeve bearing must be machined to size. Diameter of the gear shaft ... 74.990 0.010 mm (2.9524 0.0004 inch)Bore in the sleeve bearing for the gear shaft after machining ... 75.060 0.010 mm (2.9551 0.0004 inch)Maximum roughness average (Ra) ... 0.8 micrometer (32 microinch)Refer to Disassembly and Assembly for the installation procedure for the right camshaft drive gear (7). (8) Idler shaft After the sleeve bearing is installed in the gear the sleeve bearing must be machined to size. Diameter of the idler shaft ... 81.000 0.010 mm (3.1890 0.0004 inch)Bore in the sleeve bearing for the idler shaft after machining ... 81.060 0.010 mm (3.1913 0.0004 inch)Maximum roughness average (Ra) ... 0.8 micrometer (32 microinch)
Illustration 2 g01256372
Vertical line
(9) Use the following procedure to tighten the bolt for the camshaft drive gears:
Tighten the bolt for the camshaft drive gear to 360 40 N m (260 30 lb ft).
Mark a vertical line on the head of the bolt for the camshaft drive gear. Refer to Illustration 2.
Place a driver against the retaining plate of the camshaft drive gear. Strike the driver solidly with a hammer 3 to 4 times.
Tighten the bolt for the camshaft drive gear again to 360 40 N m (260 30 lb ft).
Illustration 3 g01256393
Repeat Steps 3 and 4 until the mark on the bolt turns a minimum of 90 degrees. Refer to Illustration 3. (10) Torque for the bolts ... 240 20 N m (175 15 lb ft) (11) Torque for the bolts ... 240 20 N m (175 15 lb ft)
Illustration 4 g01365021
Rear view of engine
(14) The mark on the balancer gear assembly (4) must be in alignment with the mark on the crankshaft gear (12).