345D, 349D and 349D2 Excavator Machine System Specifications Control Valve Caterpillar


Control Valve
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Illustration 1g06023332

Table 1
Item  Qty  Part  Specification Description 
7X-2550 Bolt  Torque to 50 ± 10 N·m (37 ± 7 lb ft)
8T-5041 Bolt  Torque to 50 ± 10 N·m (37 ± 7 lb ft)
230-2773 Plug  Torque to 345 ± 30 N·m (255 ± 22 lb ft)
122-7797 Ring  Lubricate the bore lightly with the lubricant that is being sealed. 
6V-5326 O-Ring Seal  Lubricate the bore lightly with the lubricant that is being sealed. 
270-5696 Load Control Valve Gp  Lubricate lightly with the lubricant that is being sealed. 
515-2707 Relief Valve Gp  Lubricate lightly with the lubricant that is being sealed.
Torque to 116 ± 8 N·m (86 ± 6 lb ft)
122-7753 Spring  Length under test force is 24.0 mm (0.95 inch).
Test force is 16.18 ± 0.81 N (3.64 ± 0.18 lb).
Free length after test is 45.0 mm (1.77 inch)
225-4818 Plug As  Torque to 10 ± 2 N·m (89 ± 18 lb in)
10  352-7228 Relief Valve Gp  Lubricate lightly with the lubricant that is being sealed.
Torque to 195 ± 20 N·m (144 ± 15 lb ft)
11  122-7750 Relief Valve Gp  Lubricate lightly with the lubricant that is being sealed.
Torque to 195 ± 20 N·m (144 ± 15 lb ft)
12  122-7719 Spring  Length under test force is 30.0 mm (1.18 inch).
Test force is 8.904 ± 0.490 N (2.002 ± 0.110 lb).
Free length after test is 38.11 mm (1.500 inch)
13  7Y-5219 O-Ring Seal  Lubricate lightly with the lubricant that is being sealed. 
14  4I-3569 Backup Ring  Lubricate lightly with the lubricant that is being sealed. 
15  122-7666 Spring  Length under test force is 30.89 mm (1.216 inch).
Test force is 12.57 ± 0.50 N (2.83 ± 0.11 lb).
Free length after test is 37.7 mm (1.48 inch)
16  095-1597 O-Ring Seal  Lubricate lightly with the lubricant that is being sealed. 
17  095-1791 Backup Ring  Lubricate lightly with the lubricant that is being sealed. 
18  230-2772 Plug  Torque to 400 ± 30 N·m (295 ± 22 lb ft)
19  131-5935 Spring  Length under test force is 68.0 mm (2.68 inch).
Test force is 215.7 ± 10.8 N (48.5 ± 2.4 lb).
Free length after test is 79.0 mm (3.11 inch)
20  230-2771 Plug  Torque to 400 ± 30 N·m (295 ± 22 lb ft)
21  147-4299 Spring  Length under test force is 30.90 mm (1.217 inch).
Test force is 10.39 ± 0.52 N (2.34 ± 0.12 lb).
Free length after test is 39.90 mm (1.571 inch)
22  147-4298 Plug  Torque to 345 ± 30 N·m (255 ± 22 lb ft)
23  10  8T-4956 Bolt  Torque to 50 ± 10 N·m (37 ± 7 lb ft)


Illustration 2g06269059
Detailed view of area A

Table 2
Item  Qty  Part  Specification Description 
24  122-7712 Plug  Torque to 175 ± 15 N·m (129 ± 11 lb ft)
25  122-7714 Spring  Length under test force is 48.0 mm (1.89 inch).
Test force is 70.80 ± 3.53 N (15.92 ± 0.79 lb).
Free length after test is 70.0 mm (2.76 inch)
26  131-5936 Plug  Torque to 265 ± 29 N·m (195 ± 21 lb ft)
27  225-4820 Plug As  Torque to 23 ± 2 N·m (204 ± 18 lb in)
28  255-5588 Regeneration Valve Gp  Lubricate the bore lightly with the lubricant that is being sealed. 


Illustration 3g06269058
Detailed view of area B

Table 3
Item  Qty  Part  Specification Description 
29  As required, use the following shims: 
1 131-5945 Shim  Thickness is 0.10 mm (0.004 inch)
1 131-5944 Shim  Thickness is 0.20 mm (0.008 inch)
1 131-5943 Shim  Thickness is 0.50 mm (0.020 inch)
1 131-5942 Shim  Thickness is 1.00 mm (0.039 inch)
30  147-4158 Spring  Length under test force is 63.0 mm (2.48 inch).
Test force is 109.6 ± 5.5 N (24.6 ± 1.2 lb).
Free length after test is 67.4 mm (2.65 inch)

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