990K Wheel Loader Systems Caterpillar

Piston Pump (Steering)

Usage:

990K A9P

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Illustration 1	g03675856

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Table 1
Specification for 392-0758 Piston Pump Gp
Item	Qty	Part	Specification Description
1	5	3E-8025 Bolt	Torque to 21 ± 5 N·m (186 ± 44 lb in).
2	2	145-3171 Seal Locknut	Torque to 170 ± 17 N·m (125 ± 13 lb ft).
3	1	6E-3869 Spring	Free length is 111.09 mm (4.374 inch).
4	20	164-8171 Spring	Free length is 12.67 mm (0.500 inch).
5	4	9T-3928 Plug As	Torque to 10 ± 1 N·m (89 ± 9 lb in)
6	1	9S-9334 O-Ring Plug	Torque to 198 ± 20 N·m (146 ± 15 lb ft).
7	4	177-0359 Bolt	Torque to 780 ± 78 N·m (575 ± 58 lb ft).
8	As required, use the following shims to achieve the dimensions shown with special service tool spacer in place of spring:
	2	164-8169 Shim	Thickness is 0.50 mm (0.020 inch).
	2	164-8170 Shim	Thickness is 0.75 mm (0.030 inch)
9	1	6E-3872 Spring	Free length is 77 mm (3.0 inch).

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