Komatsu PC600LC-7 Manual page 99

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
No. Check item
11 Spool return spring
12 Spool return spring
PC600, 600LC-7
Standard size
Installed
Free length
x OD length
87.6 x 21.2 54.5
58.1 x 26.5 52.5
Criteria
Repair limit
Installed Free
load length
192 N
—
{19.6 kg}
324 N
—
{33.0 kg}
CONTROL VALVE
Unit: mm
Remedy
Installed
Replace
load
spring if
154 N
damaged or
{15.7 kg}
deformed
259 N
{26.4 kg}
10-67