Service Ppc Valve - Komatsu PC600LC-7 Manual

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD

SERVICE PPC VALVE

a The service PPC valve operates similarly to the work equipment and swing PPC valves.
No. Check item
9 Centering spring
10 Metering spring
10-112
Standard size
Free length
Installed
x Outside
length
Diameter
33.9 x 15.3 28.4
22.7 x 8.1 22
1. Spool
2. Metering spring
3. Centering spring
4. Piston
5. Lever
6. Plate
7. Retainer
8. Body
T : To tank
P : From main pump
P1 : Port
P2 : Port
Criteria
Repair limit
Installed Free
load length
124.5 N
—
{12.7 kg}
16.7 N
—
{1.7 kg}
SERVICE PPC VALVE
Unit: mm
Remedy
Installed
Replace
load
spring if
damaged or
100 N
deformed
{10.2 kg}
13.7 N
{1.4 kg}
PC600, 600LC-7