Komatsu PC600LC-7 Manual page 93

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
2. Servo valve (No. 2 rear)
P2 : Main pump pressure IN port
PAC : Servo actuator port
PDR : Servo valve drain OUT port
PPO : Servo basic pressure IN port
PECN : CO+NC valve output pressure IN port
PC600, 600LC-7
HYDRAULIC PUMP (PISTON PUMP)
1. Servo valve
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