Komatsu ecot3 PC300LC-8 Shop Manual page 103

10 Structure, function and maintenance standard
Outline
This pump consists of 2 variable capacity
q
swash plate piston pumps, PC valve, LS valve,
EPC valve and variable volume valve.
BMP: Breather fitting port
IM: PC mode selector current
ISIG: LS set pressure selector current
OCP: Oil level detection port
PAF: Front pump delivery port
PAR: Rear pump delivery port
PBF: Front pump pressure input port
PBR: Rear pump pressure input port
PD1F: Case drain port
PD1R: Air breeder
PD2F: Drain plug
PD2R: Drain plug
PENF: Front control pressure detection port
PENR: Rear control pressure detection port
PEPC: EPC basic pressure port
PEPB: EPC basic pressure detection port
PFC: Front pump delivery pressure detection port
PLSC: LS set selector pressure detection port
PLSF: Front load pressure input port
PLSFC: Front load pressure detection port
PLSR: Rear load pressure input port
PLSRC: Rear load pressure detection port
PM: PC mode selector pressure detection port
PRC: Rear pump delivery pressure detection port
PS: Pump suction port
1. Front pump
2. Rear pump
3. LS valve
4. PC valve
5. LS-EPC valve
6. PC-EPC valve
7. Variable volume valve
PC300, 350-8
SEN01993-00
7