Iso Power Beyond Couplings; Ls - Load Sensing Line; R - Return Oil Line - New Holland T7030 Operator's Manual

LS - - Load Sensing Line (2)
Connect the sensing line from the M12 x 1.5/11.5
(ISO 6149) port (2), to the implement control valve.
It is the sensing line which generates and controls the
oil pressure and flow from the tractor hydraulic pump.
When an implement control valve is operated, the
low standby pressure from port 'P', is diverted down
the sensing line to 'switch on' the tractor hydraulic
pump. In operation, the load sensing line constantly
monitors pressure and flow to ensure supply never
exceeds demand.
NOTE: Tractors with solenoid operated hydraulic top
link and right hand lift rod will have a 'T' piece in port
(2). Remove the cap from the 'T' piece and connect
the sensing line in place of the cap. Use a
'O' ring face seal fitting which complies to standards
ISO 8434- -3 or SAE J1453. Do not overtighten the
connector.
R - - Return Oil Line (3)
The return oil line from the implement control valves
should be connected to the M27 x 2/19 (ISO 6149)
port (3). This will permit the oil to return directly back
into the tractor hydraulic system.

ISO Power Beyond Couplings

The ISO coupling consists of three ports.
1. Return oil line.
Coupling size: 25
Port size: M30 x 2/19
2. Oil supply (pressure) port.
Coupling size: 19
Port size: M27 x 2/19
3. Load sensing port.
Coupling size: 6.3
Port size: M14 x 1.5/11.5
The maximum flow available through the ISO
pressure port will depend on the output from the
tractor hydraulic pump. Full flow will be available
from a 120 litre pump assuming there are no other
hydraulic demands on the system.
With the high capacity pump, up to 140 litre/min is
available.
IMPORTANT: Always relieve hydraulic pressure in
remote cylinders before connecting or disconnecting
hydraulic hoses.
SECTION 3 - - FIELD OPERATIONS
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