Komatsu PC88MR-10 Shop Manual page 128

Hydraulic excavator
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10 Structure and function
Main pump
P3: Gear pump pressure input port
PAV: Pump average pressure port
PDE: EPC drain port
PEN: Control pressure input port
PEPC: EPC source pressure input port
PH: Pump shuttle port
T: Drain port
1. Shaft
2. Flange
10-50
PC88MR-10

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