jcb JS300 Service Manual page 720

Pump Hydraulic Circuit Diagram
Pi1
Pm1
Table 1. Key
A1,2 Delivery port
B1 Suction port
Dr Drain port
Pi1,2 Pilot port
P1 Proportional pressure reducing valve
Pm1,2 Q max cut port
a1-3 Gauge port
a4 Gauge port
A3 Gear pump delivery port
B3 Gear pump suction port
E-59
A1
a1
M
Dr
A2
a2
B1
Fig 2.
9813/5100-1
Section E - Hydraulics
Hydraulic Pump/Regulator
Hydraulic Pump Operation
Psv
A3
B3 a3
Pi2
Pm2
a4
C077790
E-59