3500B Locomotive Engines Caterpillar

Auxiliary Drive (Lower Left Hand)

Usage:

3512B 3ZW

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Illustration 1	g03058016

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Table 1
Specification for 153-1237 Auxiliary Drive Gp
Item	Qty	Part	Specification Description
1	1	107-0777 Pump Drive Shaft As	Diameter is 74.900 ± 0.015 mm (2.9488 ± 0.0006 inch).
			Width of the groove for the thrust washer is 8.75 ± 0.10 mm (0.344 ± 0.004 inch).
			During assembly, flush the bushing with the pump drive shaft to ± 0.5 mm (± 0.02 inch).
2	1	107-0779 Adapter As	During assembly, align the hole in the bushing with the adapter.
			Bore of 127-5400 Bushing after assembly is 75.000 ± 0.055 mm (2.9527 ± 0.0022 inch).
			Installation depth of 127-5400 Bushing is 1.5 ± 0.5 mm (0.06 ± 0.02 inch).
3	2	259-4598 O-Ring Seal	Before assembly, lightly lubricate the bore with the fluid that is being sealed.
4	1	7C-3260 Shaft	Diameter is 89.88 ± 0.02 mm (3.539 ± 0.001 inch).
5	2	7N-5246 Thrust Washer	Thickness is 8.50 ± 0.05 mm (0.335 ± 0.002 inch).
6	1	235-3546 O-Ring Seal	Before assembly, lightly lubricate the bore with the fluid that is being sealed.
7	1	144-8263 Idler Gear As	Bore of the 140-9597 Bushing after assembly is 90.000 ± 0.010 mm (3.5430 ± 0.0004 inch).
			Installation depth of the bushing is 2.3 ± 0.5 mm (0.09 ± 0.02 inch).
8	1	7C-3258 Thrust Washer Assembly	Thickness of 7C-3257 Thrust Washer is 7.00 ± 0.15 mm (0.276 ± 0.006 inch).
			Protrusion of 7N-2047 Dowel is 4.5 ± 0.5 mm (0.18 ± 0.02 inch).
9	1	7E-6748 Adapter As	During assembly, align the hole in the bushing with the adapter.
			Bore of 127-5400 Bushing after assembly is 75.000 ± 0.055 mm (2.9527 ± 0.0022 inch).
			Installation depth of 127-5400 Bushing is 6.5 ± 0.5 mm (0.26 ± 0.02 inch).

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