320C and 322C Excavators Attachment Hydraulic System – Travel Counterbalance Valve



Illustration 1 g01426853
Table 1
Specification for 137-3718 Travel Counterbalance Valve Gp    
Item     Qty     Part     Specification Description    
1     2     114-0516 Spring     Length under test force is 34.5 mm (1.36 inch).
Test force is
53.8 ± 4.0 N (12.1 ± 0.9 lb).
Free length after test is
43.7 mm (1.72 inch).    
2     2     114-0514 Spring     Length under test force is
21.4 mm (0.84 inch).
Test force is
270.5 ± 21.6 N (60.8 ± 4.9 lb).
Free length after test is
26.0 mm (1.02362 inch).    
3     1     129-8024 Orifice     Torque to
4.9 ± 1.0 N·m (43.4 ± 8.9 lb in).    
4     2     129-8030 Relief Valve Gp     Torque to
540 ± 50 N·m (398 ± 37 lb ft).    
5     1     7Y-8437 Nut     Torque to
130 ± 13 N·m (96 ± 10 lb ft).    
6     2     119-5364 Plug     Torque to
76 ± 8 N·m (56 ± 6 lb ft).    
7     2     119-5362 Spring     Length under test force is
19.0 mm (0.75 inch).
Test force is
2.50 ± 0.29 N (0.56 ± 0.07 lb).
Free length after test is
20.0 mm (0.79 inch).    
8     2     129-7931 Spring     Length under test force is
37.0 mm (1.46 inch).
Test force is
316.5 ± 31.4 N (71.15 ± 7.06 lb).
Free length after test is
50.6 mm (2.0 inch).    
9     2     9S-8004 O-Ring Plug     Torque to
31 ± 3 N·m (274 ± 27 lb in).    
10     8     6V-8200 Bolt     Torque to
80 ± 8 N·m (59 ± 6 lb ft).