Komatsu Galeo PC138US-8 Shop Manual page 145

10 Structure, function and maintenance standard
R.H. Travel valve
1. Pressure compensation valve F
2. Suction valve
3. Suction valve
4. Spool
5. Pressure compensation valve R
6. Travel junction valve + LS check valve
7. Unload valve
8. LS bypass valve
9. Merge-divider valve spool
10. Main relief valve
11. Cooler bypass valve
12. Lift check valve
Boom valve
13. Pressure compensation valve F
14. Suction valve
15. Hydraulic drift prevention valve
16. Suction valve
17. Spool
18. Pressure compensation valve R
F: Flow control valve
R: Pressure reducing valve
No. Check item
19 Spool return spring
20 Check valve spring
21 Valve return spring
22 Spool return spring
23 Check valve spring
24 Spool return valve spring
PC138US, USLC-8
Standard size
Free length
Installed
x Outside
length
diameter
19.26 × 7.5 14
21.9 × 5 15.8
58.9 × 13 53
49.8 × 18.8 33
16.4 × 8.9 11.5
72.7 × 20.6 42.5
Criteria
Repair limit
Installed
Free length
load
15.7 N
—
{1.6 kg}
1.96 N
—
{0.2 kg}
83.4 N
—
{8.5 kg}
98.1 N
—
{10 kg}
13.7 N
—
{1.4 kg}
135 N
—
{13.8 kg}
SEN02549-02
Unit: mm
Remedy
Installed
load
12.6 N
{1.28 kg}
1.57 N
If damaged or
{0.16 kg}
deformed,
66.7 N
replace spring
{6.8 kg}
78.5 N
{8 kg}
11.0 N
{1.12 kg}
108 N
{11 kg}
11