Hyundai R 160 LC-3, Service Manual

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GROUP 13 PROLIX SWITCH
NORMAL POSITION
- EPPR valve supply specified amount of pilot pressure to the flow regulator of hydraulic pump and
regulate hydraulic pump delivery amount depending upon the signal of CPU controller by selected
mode.
EMERGENCY POSITION
- If prolix switch is set at the emergency position when any abnormality occurs in CAPO system,
constant electric current from battery flows to EPPR valve so that EPPR valve can be fixed at the
predetermined position.
- In this case excavator can be operated at an equivalent performance to S mode.
Is the conversion switch to manual control temporarily when the electronic control system is out of
order, until repair work be done.
1. OPERATING PRINCIPLE WIRING DIAGRAM
1)
2)
Electric box
Never place this switch in EMERGENCY
position when the CPU is in normal operation.
2
1
CN-75
CS-7
EPPR VALVE
PROLIX SWITCH
RESISTOR
CPU CONTROLLER
CN-47
CN-53
CN-52
1
2
3
4
5
6
3
2
1
6
4
5
2
1
5
1
7
Ɠ Normal :
Emergency :
Emergency
Normal