Komatsu Galeo PC800-8 Shop Manual page 157

Hydraulic excavator
Table of Contents

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10 Structure, function and maintenance standard
1. Output shaft
2. Case
3. Thrust plate
4. Shoe
5. Piston
6. Cylinder block
7. Valve plate
8. End cover
No.
Check item
10
Check valve spring
PC800, 850-8
9. Center spring
10. Check valve spring
11. Check valve
12. Pilot valve
13. Reversible valve spool
14. Safety valve
15. Reversible valve spring
Standard size
Free length
Installed
× OD
length
16.4 × 8.9
11.5
Criteria
Repair limit
Installed
Free length
load
13.72 N
{1.4 kg}
SEN00383-03
Unit: mm
Remedy
Replace
Installed
spring if there
load
is damage or
deformation
10.29 N
{1.05 kg}
35

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