Komatsu PC88MR-10 Shop Manual page 1284

60 Maintenance standard
Control valve
No. Item
Valve spring
1
Valve spring
2
Valve spring
3
Check valve spring
4
Check valve spring
5
Check valve spring
6
Check valve spring
7
60-32
Standard dimension
Free
Installed
height x
height
outside
diameter
30.9 x 5.2 20
34.4 x 14.4 21.5
20 x 8.4 12
28.5 x 5.4 25
27.2 x 6.9 22
12.3 x 11.4 10.5
21.9 x 5 15.8
Criteria
Repair limit
Load at
Free
installed
height
height
27.6 N
{2.8 kg}
55.9 N
{5.7 kg}
6.9 N
{0.7 kg}
2 N
{0.2 kg}
3.9 N
{0.4 kg}
3.9 N
{0.4 kg}
2 N
{0.2 kg}
Unit: mm
Remedy
Load at
installed
height
25.8 N
{2.63 kg}
52.5 N
{5.36 kg}
Replace
6.45 N
spring if
damaged or
{0.66 kg}
deformed
1.84 N
{0.19 kg}
3.68 N
{0.38 kg}
3.68 N
{0.38 kg}
1.84 N
{0.19 kg}
PC88MR-10