349F and 352F Excavators Machine System Specifications Caterpillar

Control Valve

Usage:

352F-VG A9J

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Illustration 1	g02384416

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Table 1
Specification for 310-0257 Control Valve Gp
Item	Qty	Part	Specification Description
1	1	310-0279 Spring	Length under test force is 75.00 mm (2.953 inch).
			Test force is 334.8 ± 16.7 N (75.3 ± 3.8 lb).
			Free length after test is 78.00 mm (3.071 inch).
2	4	122-7673 Special Bolt	Before assembly, apply red Loctite 271 to the threads of the stem when stem does not have Spiralock threads.
			Torque to 70 ± 10 N·m (52 ± 7 lb ft).
3	2	310-0277 Spring	Length under test force is 75.00 mm (2.953 inch).
			Test force is 166.8 N (37.5 lb).
			Free length after test is 76.40 mm (3.008 inch).
4	1	310-0278 Spring	Length under test force is 75.00 mm (2.953 inch).
			Test force is 668.7 ± 33.4 N (150.3 ± 7.5 lb).
			Free length after test is 81.50 mm (3.209 inch).
5	1	122-7695 Spring	Length under test force is 27.16 mm (1.069 inch).
			Test force is 3.42 ± 0.17 N (0.77 ± 0.04 lb).
			Free length after test is 37.4 mm (1.47 inch).
6	1	323-7713 Guide	Use one of the following tightening method to Torque the guide.
			When stem has Spiralock threads, torque to 200 ± 15 N·m (148 ± 11 lb ft).
			When stem does not have Spiralock threads, apply red Loctite 271 to the threads and torque to 75 ± 7 N·m (55 ± 5 lb ft).

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