Komatsu 830E Shop Manual page 495

1. Capscrew
2. Inlet Cover
3. Spring (Orange)
4. Main Relief Valve
5. Spring
NOTE: If restrictor poppet removal in cover (1) is
required, refer to step 4 and Figure 8-6.
4. Remove sleeve (9), backup ring (8), O-ring (7),
backup ring (6). Remove backup ring (5), O-ring
(4), backup ring (3) and restrictor poppet (2).
5. Repeat steps 1 through 4 for the opposite inlet
section if disassembly is required.
Cleaning and Inspection
1. Discard all O-rings and backup rings. Clean all
parts in solvent and dry with compressed air.
2. Inspect all springs for breaks or distortion.
Inspect poppet seating surfaces for nicks or
excessive wear. All seats must be sharp and
free of nicks.
3. Inspect all bores and surfaces of sliding parts for
nicks, scores or excessive wear.
4. Inspect poppets in their respective bore for fit.
Poppets should move freely, without binding,
through a complete revolution.
5. Inspect fit and movement between sleeve and
low pressure relief valve.
L08031
FIGURE 8-5. INLET SECTION DISASSEMBLY
6. Sleeve
7. Low Pressure Relief
8. O-Rings
9. Inlet Valve Body
10. O-Rings
Hoist Circuit Component Repair
11. Poppets
12. Springs
13. Cover
14. Capscrews
FIGURE 8-6. RESTRICTOR POPPET REMOVAL
1. Inlet Cover
2. Restrictor Poppet
3. Backup Ring
4. O-Ring
5. Backup Ring
6. Backup Ring
7. O-ring
8. Backup Ring
9. Sleeve
L8-3