Komatsu Galeo PC138US-8 Shop Manual page 197

10 Structure, function and maintenance standard
P : From self pressure reducing valve
P1 : To service valve
P2 : To service valve
T : To tank
1. Spool
2. Piston
3. Lever
4. Plate
5. Retainer
6. Block
7. Body
8. EPC valve
No. Check item
9 Centering spring
10 Metering spring
PC138US, USLC-8
Standard size
Free length
Installation
× Outside
length
diameter
33.9 × 15.3 28.4
22.7 × 8.10 22 .0
Criteria
Repair limit
Installation
Free length
load
125 N
—
{12.7 kg}
16.7 N
—
{1.70 kg}
SEN02550-01
Unit: mm
Remedy
Installation
load
If damaged or
deformed,
100 N
replace spring.
{10.2 kg}
13.3 N
{1.36 kg}
15