Komatsu Galeo PC138US-8 Shop Manual page 874

SEN02713-00
The appearance and section of only the 8-spool valve (blade + service valve) are shown here.
A1 : To swing motor
A2 : To blade cylinder bottom
A3 : To left travel motor
A4 : To right travel motor
A5 : To boom cylinder bottom
A6 : To arm cylinder head
A7 : To bucket cylinder head
A8 : To attachment
B1 : To swing motor
B2 : To blade cylinder head
B3 : To left travel motor
B4 : To right travel motor
B5 : To boom cylinder head
B6 : To arm cylinder bottom
B7 : To bucket cylinder bottom
B8 : To attachment
LS : To pump LS valve
P1 : From main pump
P2 : From main pump
PP : To main pump
PR : To solenoid valve, PPC valve and EPC valve
PS : From solenoid valve of merge-divider valve
TB : To tank
TC : To oil cooler
BP1: From boom raise PPC valve
LS1: LS1 pressure pickup port
LS2: LS2 pressure pickup port
1. Cover
2. Service valve
3. Bucket valve
4. Arm valve
5. Boom valve
6. Right travel valve
7. Left travel valve
8. Blade valve
9. Swing valve
18
50 Disassembly and assembly
LS3 : LS3 pressure pickup port
PA : From swing left PPC valve
PA2 : From blade lower PPC valve
PA3 : From left travel forward PPC valve
PA4 : From right travel forward PPC valve
PA5 : From boom raise PPC valve
PA6 : From arm dump PPC valve
PA7 : From bucket dump 1 PPC valve
PA8 : From service PPC valve
PB1 : From swing right PPC valve
PB2 : From blade raise PPC valve
PB3 : From left travel reverse PPC valve
PB4 : From right travel reverse PPC valve
PB5 : From boom lower PPC valve
PB6 : From arm in PPC valve
PB7 : From bucket curl PPC valve
PB8 : From service PPC valve
PMAX: Pressure sensor port
PP1 : PP1 pressure pickup port
PP2 : PP2 pressure pickup port
PPI1 : Pump 1 pressure pickup port
PPI2 : Pump 2 pressure pickup port
PRI : PR pressure pickup port
PST : From travel junction solenoid valve
TS1 : To tank
PS2 : To tank
TSW : To swing motor
TSW : To swing motor
10. Block
11. Swing bleed valve
12. LS check valve
13. Travel junction valve + LS check valve
14. Arm regeneration valve
15. Boom hydraulic drift prevention valve
16. Merge-divider valve block
17. Nut
18. Bolt
PC138US, USLC-8