349F and 352F Excavators Machine System Specifications Caterpillar

Main Control Valve

Usage:

352F RBF

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Illustration 1	g03603760
(E-E) Stick (F-F) Boom (G-G) Bucket (H-H) Attachment

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Table 1
Item	Qty	Part	Specification Description
1	20	8T-4186 Bolt	Torque to 49 ± 5 N·m (36 ± 4 lb ft).

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Table 2
Item	Qty	Part	Specification Description
-	Lubricate O-ring seal (6) and backup ring (7) lightly with the lubricant that is being sealed.
2	1	310-0300 Stop Plug	Torque to 290 to 315 N·m (214 to 232 lb ft).
3	1	310-0298 Spring	Length under test force is 68.50 mm (2.697 inch).
			Test force is 248.1 ± 12.4 N (55.8 ± 2.8 lb).
			Free length after test is 72.80 mm (2.866 inch).
4	1	310-0302 Check Valve Spring	Length under test force is 56.30 mm (2.217 inch).
			Test force is 7.7 ± 0.4 N (1.7 ± 0.1 lb).
			Free length after test is 68.20 mm (2.685 inch).
5	1	310-0282 Stop Plug	Torque to 285 to 310 N·m (210 to 229 lb ft).

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Table 3
Item	Qty	Part	Specification Description
8	5	122-7673 Special Bolt	Before assembly, apply red Loctite 271 to the threads of the stem when stem does not have spiral lock thread.
			Torque to 70 ± 10 N·m (52 ± 7 lb ft).
9	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).
10	3	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).
11	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).

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Table 4
Item	Qty	Part	Specification Description
12	1	122-7756 Relief Valve Gp	Lubricate the O-ring seal and the backup ring lightly with lubricant that is being sealed.
			Torque to 195 ± 20 N·m (144 ± 15 lb ft).
13	1	310-0285 Check Valve Plug	Torque to 290 to 315 N·m (214 to 232 lb ft).
14	1	310-0287 Spring	Length under test force is 55.50 mm (2.185 inch).
			Test force is 12.0 ± 0.6 N (2.7 ± 0.1 lb).
			Free length after test is 71.20 mm (2.803 inch).

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Table 5
Item	Qty	Part	Specification Description
15	1	310-0285 Check Valve Plug	Torque to 290 to 315 N·m (214 to 232 lb ft).
16	1	310-0287 Spring	Length under test force is 55.50 mm (2.185 inch).
			Test force is 12.0 ± 0.6 N (2.7 ± 0.1 lb).
			Free length after test is 71.20 mm (2.803 inch).

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Table 6
Item	Qty	Part	Specification Description
17	1	310-0285 Check Valve Plug	Torque to 290 to 315 N·m (214 to 232 lb ft).
18	1	310-0287 Spring	Length under test force is 55.50 mm (2.185 inch).
			Test force is 12.0 ± 0.6 N (2.7 ± 0.1 lb).
			Free length after test is 71.20 mm (2.803 inch).
19	1	Relief Valve Gp	Lubricate the O-ring seal and the backup ring lightly with lubricant that is being sealed.
			Torque to 116 ± 8 N·m (86 ± 6 lb ft).

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Table 7
Item	Qty	Part	Specification Description
20	2	515-2707 Relief Valve Gp	Lubricate the O-ring seal and the backup ring lightly with lubricant that is being sealed.
			Torque to 82 ± 7 N·m (60 ± 5 lb ft).
21	1	310-0285 Check Valve Plug	Torque to 290 to 315 N·m (214 to 232 lb ft).
22	1	310-0287 Spring	Length under test force is 55.50 mm (2.185 inch).
			Test force is 12.0 ± 0.6 N (2.7 ± 0.1 lb).
			Free length after test is 71.20 mm (2.803 inch).

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Table 8
Item	Qty	Part	Specification Description
23	2	122-7768 Plug Gp	Lubricate the O-ring seal and the backup ring lightly with lubricant that is being sealed.
			Torque to 82 ± 7 N·m (60 ± 5 lb ft).
24	1	310-0285 Check Valve Plug	Torque to 290 to 315 N·m (214 to 232 lb ft).
25	1	310-0287 Spring	Length under test force is 55.50 mm (2.185 inch).
			Test force is 12.0 ± 0.6 N (2.7 ± 0.1 lb).
			Free length after test is 71.20 mm (2.803 inch).