G3500 Engines Caterpillar

Gear Group (Rear)

Usage:

G3508 2TJ

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Illustration 1	g03201695

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Illustration 2	g03201697
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Illustration 3	g03201698
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Table 1
Specification for 112-5677 Rear Gear Gp
Item	Qty	Part	Specification Description
1	2	7E-3897 Camshaft Drive Gear	Before assembly, clean the taper of the camshaft and the tapered bore of the camshaft drive gear with lint free cloth saturated with cleaning solvent to remove excess oil. Clean with alcohol wipe.
2	2	112-1554 Idler Gear As	After installation, bore of 125-9751 Bushing is 81.060 ± 0.010 mm (3.1913 ± 0.0004 inch). Installation depth of the bushing is 1.00 ± 0.25 mm (0.039 ± 0.010 inch).
3	2	101-1368 Thrust Washer	Thickness of the new thrust washer is 1.90 ± 0.10 mm (0.075 ± 0.004 inch).
4	4	8M-2530 Bolt	Torque to 140 ± 10 N·m (103 ± 7 lb ft).
5	1	4P-5437 Gear Shaft	Diameter is 74.990 ± 0.010 mm (2.9524 ± 0.0004 inch).
6	1	4P-5459 Balancer Gear Assembly	After installation, bore of 4P-5438 Bushing is 75.060 ± 0.010 mm (2.9551 ± 0.0004 inch). Installation depth of the bushing is 1.5 ± 0.5 mm (0.06 ± 0.02 inch).
7	2	112-1552 Idler Shaft	Diameter is 81.000 ± 0.010 mm (3.1890 ± 0.0004 inch).
8	1	101-1365 Thrust Plate	thickness of the new thrust plate is 6.35 ± 0.25 mm (0.250 ± 0.010 inch).
9	2	9X-8887 Bolt	Use the following procedure in order to tighten the bolt for the camshaft drive gears: 1. Tighten bolt for the camshaft drive gear to 360 ± 40 N·m (266 ± 30 lb ft). 2. Mark a vertical line on the head of the bolt for the camshaft drive gear. Refer to Illustration 2. 3. Place a driver against the retaining plate of the camshaft drive gear. Strike the driver solidly with a hammer 3 to 4 times. 4. Again, tighten bolt for the camshaft drive gear to 360 ± 40 N·m (266 ± 30 lb ft). 5. Repeat steps 3 and 4 until the mark on bolt turns a minimum of 90 degrees. Refer to Illustration 3.
10	4	1B-4367 Bolt	Torque to 240 ± 20 N·m (177 ± 15 lb ft).
11	2	8S-2331 Bolt	Torque to 240 ± 20 N·m (177 ± 15 lb ft).

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