jcb JS300 Service Manual page 753

Table 6. Port Identification
Item Port Function
56 P2 Pump 1 Feed
57 B6 Travel (R) Forward
58 Pi2 Boom 1/Arm 2 priority Bucket
59 B7 Bucket Close
60 B8 Boom 1 Down
61 prs1 Not Used
62 prs2 Not Used
63 T2 Tank
64 BR1 Tab/Option
65 Tr1 Tank Option
66 AR1 Tab/Option
67 ps2 Negative control (Pump 1)
68 P3 Merged Feed (if fitted)
69 A8 Boom 1 Up
70 A7 Bucket Open
71 A6 Travel (R) Backward
72 DR4 Drain
73 PA Pressure Switch Upper
74 PT Pressure Switch Travel
location,K Fig 7. ( T
For port
E-92
E-91).
9813/5100-1
Section E - Hydraulics
Hydraulic Control Valve
Layout
E-92