Komatsu PC88MR-10 Shop Manual page 127

10 Structure and function
Main pump
P2T: Travel deviation adjustment orifice
P3: Gear pump discharge port
P5: Gear pump pressure pickup port
PD: Drain port
PD2: Pump drain port (plug)
PEN: Control pressure pickup port
PEPC: EPC source pressure pickup port
PGS: Gear pump suction port
PLS: LS pressure input port (from control valve port LS)
PM: PC mode selector pressure pickup port
PPLS: Pump pressure input port (from control valve port PP)
PPT: PTO oil filler port
PS1: Main pump suction port
PEPC1: EPC source pressure input port
1. Main pump
2. Servo valve
3. Swing and blade pump
4. EPC valve
5. Bleeder
PC88MR-10 10-49