Komatsu Galeo PC800-8 Shop Manual page 180

SEN00384-02
No. Check item
Main relief valve, main valve
1
spring
Jet sensor relief valve,
2
pilot poppet spring
Jet sensor relief valve,
3
main valve spring
4 Spool return spring
5 Spool return spring (travel)
6 Spool return spring (excl.travel)
7 Check valve spring
8 Check valve spring
18
10 Structure, function and maintenance standard
Standard size
Free length Installation
× OD length
34.7 × 10.1 32.5
34.5 × 8.8 29.4
37.4 × 11.4 33
69.9 × 57 63
75 × 37 74.5
74.5 × 38.1 74.5
78.2 × 26.6 52
41.3 × 35.5 25.5
Criteria
Repair limit
Installation
Free length
load
394.2 N
—
{40.2 kg}
30 N
—
{3.1 kg}
49 N
—
{5.0 kg}
431 N
—
{44 kg}
0 N
—
{0 kg}
0 N
—
{0 kg}
18.8 N
—
{1.92 kg}
18.8 N
—
{1.92 kg}
Unit: mm
Remedy
Installation
load
315.2 N
{32.2 kg}
24.3 N
{2.5 kg}
39.2 N
Replace
{4.0 kg}
spring if dam-
345 N {35.2
aged or
kg}
deformed
0 N {0 kg}
0 N {0 kg}
15.1 N
{1.54 kg}
15.1 N
{1.54 kg}
PC800, 850-8