jcb JS300 Service Manual page 749

Table 4. Port Identification
Item Port Function
22 P1 Pump 2 Input
23 A1 Travel (L) Backwards
24 A2 Hammer/Auxiliary Option
25 P4 Merge In (if fitted)
26 A3 Swing Left
27 Pi1 Boom Priority
28 A5 Arm 1 Out
29 ps1 Negative control (Pump 2)
30 T1 Tank
31 pc3 Swing Over Dipper Priority
32 B5 Arm 1 In
33 B3 Swing Right
34 B2 Hammer/Auxiliary Option
35 B1 Travel (L) Forward
K Fig 5. ( T
For port location,
E-88
E-87).
9813/5100-1
Section E - Hydraulics
Hydraulic Control Valve
Layout
E-88