Komatsu PC200-8M0 Shop Manual page 239

403 Hydraulic system, Part 3
PPC valve
P: From self pressure reducing valve
P1: To service valve
P2: To service valve
T: To hydraulic tank
1. Spool
2. Piston
3. Lever
4. Plate
5. Retainer
6. Body
No. Check item
7
Centering spring
8
Metering spring
PC200, 200LC, 220, 220LC-8M0
Standard dimension
Free length x Installed
Outside diameter length
33.9 x 15.3 28.4
22.7 x 8.10 22.0
Criteria
Repair limit
Load at
installed Free length
length
125 N
—
{12.7 kg}
16.7 N
—
{1.70 kg}
SEN06121-00
Unit: mm
Remedy
Load at
installed
Replace spring if
length
damaged or
100 N
deformed
{10.2 kg}
13.3 N
{1.36 kg}
41
10-403