jcb JS300 Service Manual page 717

Key to Oil Flow & Pressu re
Full Pressu re
Pressu re
Servo
Neutral
Exhaust
Cavitation
Lock Up
53
OPTION
HAM/AUX
2 T 3 P 1
45
K Hammer Circuit ( T
For Description,
E-56
T
10
P
A1
3.5 Bar
B1
B
2
18
1 3
Fig 17. Hammer Schematic
E-55).
9813/5100-1
Section E - Hydraulics
Hydraulic Operation and Schematics
27
VENTS TO ATMOSPHERE
A2
B2
392 5Bar 392 5Bar
B2
A2
314 5Bar 314 5Bar
pa2
P1
372 5Bar @ 114 l/min
343 3Bar @ 138 l/min
52
T4 P4
T5
T3
P5 P3
T6 T2
P6 P2
T7 T1
P7 P1
T8 T
P8 P
Hydraulic System
392 5Bar 392 5Bar
264 5Bar
392 5Bar
392 5Bar 392 5Bar
PH PG PA PT P2
ON 12 Bar
OFF 9 Bar
E-56