374F Excavator Machine System Control Valve (Stick Lowering) Caterpillar


Control Valve (Stick Lowering)
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Illustration 1g03506062

Table 1
Specification for 399-8417 Check and Relief Valve Gp 
Item  Qty  Part  Specification description 
225-4818 Plug As  Torque to 10 ± 2 N·m (89 ± 18 lb in)
225-4820 Plug As  Torque to 23 ± 2 N·m (204 ± 18 lb in)
190-8602 Check Valve Gp  Torque to 150 ± 15 N·m (111 ± 11 lb ft)
352-6869 Relief Valve Gp  Torque to 300 ± 40 N·m (221 ± 30 lb ft)


Illustration 2g03506065
Section A-A

Table 2
Item  Qty  Part  Specification description 
As required, use the following shims: 
3 9N-1574 Shim  Thickness is 0.25 mm (0.010 inch)
2 9N-1575 Shim  Thickness is 0.76 mm (0.030 inch)
335-3038 Spring  Length under test force is 55.6 mm (2.19 inch)
Test force is 258.5 ± 16.0 N (58.1 ± 3.6 lb).
Free length after test is 61 mm (2.4 inch).
8J-6815 Orifice Plug  Torque to 13 ± 2 N·m (115 ± 18 lb in)
264-6346 Guide  Torque to 35 ± 4 N·m (26 ± 3 lb ft)
8C-3085 O-Ring Seal  Lubricate the bore lightly with the lubricant that is being sealed. 
10  153-8623 Backup Ring  Lubricate the bore lightly with the lubricant that is being sealed. 
11  4J-0522 O-Ring Seal  Lubricate the bore lightly with the lubricant that is being sealed. 
12  4I-6397 Backup Ring  Lubricate the bore lightly with the lubricant that is being sealed. 
13  6V-3922 O-Ring Seal  Lubricate the bore lightly with the lubricant that is being sealed. 
14  4T-5071 Backup Ring  Lubricate the bore lightly with the lubricant that is being sealed. 
15  095-1599 O-Ring Seal  Lubricate the bore lightly with the lubricant that is being sealed. 
16  095-1793 Backup Ring  Lubricate the bore lightly with the lubricant that is being sealed. 
17  369-8572 Check Valve Spring  Length under test force is 39 mm (1.5 inch)
Test force is 15.0 ± 0.8 N (3.4 ± 0.2 lb).
Free length after test is 52.70 mm (2.075 inch).

Information System:

374F Excavator Machine System Control Valve
374F Excavator Machine System Control Valve
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