Komatsu PC88MR-10 Shop Manual page 1296

60 Maintenance standard
Travel PPC valve
No. Item
Centering spring
1
Metering spring
2
60-44
Standard dimension
Free
Installed
height x
height
outside
diameter
48.57 x
32.5
15.5
26.53 x
24.9
8.15
Criteria
Repair limit
Load at
Free
installed
height
height
108 N
{11 kg}
16.7 N
{1.7 kg}
Unit: mm
Remedy
Load at
installed
Replace
height
spring if
damaged or
86.3 N
deformed
{8.8 kg}
13.3 N
{1.36 kg}
PC88MR-10