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10 Structure and function
Control valve
A1: To blade cylinder
A2: To swing motor
A3: To L.H. travel motor
A4: To R.H. travel motor
A5: To boom swing cylinder
A6: To boom cylinder
A7: To arm cylinder
A8: To bucket cylinder
A9: To attachment 1, actuator
B1: To blade cylinder
B2: To swing motor
B3: To L.H. travel motor
B4: To R.H. travel motor
B5: To boom swing cylinder
B6: To boom cylinder
B7: To arm cylinder
B8: To bucket cylinder
B9: To attachment 1, actuator
BP: From boom RAISE PPC valve
LS: To pump LS valve (LS pressure input)
LS1I: LS1 pressure pickup port
LS2I: LS2 pressure pickup port
P1: From pump discharge port
P1I: P1 pressure pickup port
P2: From pump discharge port
P2I: P2 pressure pickup port
PR: To PPC valve source pressure
P3: From pump discharge port
PA1: From blade RAISE PPC valve
PA2: From swing RIGHT PPC valve
PA3: From L.H. travel REVERSE PPC valve
PA4: From R.H. travel REVERSE PPC valve
PA5: From boom SWING L.H. PPC valve
PA6: From boom RAISE PPC valve
PA7: Arm OUT PPC valve
PA8: From bucket DUMP PPC valve
PA9: From attachment solenoid valve
PB1: From blade LOWER PPC valve
PB2: From swing LEFT PPC valve
PB3: From L.H. travel FORWARD PPC valve
PB4: From R.H. travel FORWARD PPC valve
PB5: From boom SWING R.H. PPC valve
PB6: From boom LOWER PPC valve
PB7: From arm IN PPC valve
PB8: From bucket CURL PPC valve
PA9: From attachment solenoid valve
PP: To pump LS valve (LS pressure input)
PC88MR-10
10-61
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Troubleshooting
