MASSEY FERGUSON 5400 - Diagram of Mechanical Reverse Shuttle Speedshift; High Flow Rate, High Pressure Circuit

Massey Ferguson 5400 - Issue 1.a
Description of circuit open centre 57 l/mn
09A01.8
E . High flow rate, high pressure
circuit
Reminder
The second stage of the pump supplies, in the
following order:
- the trailer brake spool valve, which is priority (if
fitted);
- the auxiliary spool valves;
- the lift control valve.
The oil not used by the trailer brake spool valve feeds
the auxiliary spool valves fitted to the rear of the lift
cover.
Starting at the auxiliary spool valves, a line supplies the
lift control spool valve located on the left-hand side
cover.
The excess flow rate from the spool valves returns to
the pump suction pipe via a restrictor (16) (Fig. 5)
without passing through the 150 micron filter.
A safety valve, calibrated at 200 bar, is fitted in the deli-
very channel on the right-hand cover to protect the
high pressure circuit.
The hydraulic unit of the suspended front axle (if fitted)
is also connected to the high pressure circuit. It
supplies the control ram via a valve fitted to the
right-hand hydraulic cover. A pressure relief valve fitted
on the selector cover controls overpressure.
F . Diagram of mechanical reverse
shuttle Speedshift
(Fig. 7)
Parts list
(1) Front differential lock
(2) Steering ram
(3) Pressure take-off (approximately 5 bar)
(4) Orbitrol hydrostatic spool valve
(5) Front clutch (power shuttle)
(6) Rear clutch (power shuttle)
(8) Speedshift unit
(9) Gearbox
(10) 1.5 bar valve
(11) Temperature switch
(12) Hare / Tortoise unit
(13) PTO clutch
(14) Pump suction pipe
(15) Lift control spool valve
(16) Restrictor
(18) 4WD clutch
(19) Brake lubricating pipes
(20) Rear differential lock
(21) Auxiliary spool valves
(22) Lift rams
(23) Oil cooler
(24) Brake master cylinders
(25) Tank (excluding MERITOR master cylinders)
(26) Connector to assist brake bleeding
(28) Proportional solenoid valves (reverse shuttle)
(31) Clutch unit (reverse shuttle)
(32) Accumulator
(33) 60 micron filter
(34) Hare / Tortoise solenoid valve
(35) Differential lock solenoid valve
(36) PTO solenoid valve
(37) PTO brake solenoid valve
(38) 4 WD solenoid valve
(39) 15 micron filters
(40) Clogging indicator
(41) Trailer brake valve (spool valve)
(42) High pressure safety valve
(43) Two-stage hydraulic pump
(44) 150 micron suction filter
(45) Left and right brakes
(46) Trailer power take-off
(47) PTO brake
(48) Valve (reverse shuttle, reverse clutch, opening at
13 bar)
(49) 1,5 bar valve
(50) Left-hand hydraulic cover
(61) Speedshift unit
(62) Speedshift valve
(63) Front PTO solenoid valve
(64) Clutch release bearing
(65) Clutch master cylinder with hydraulic power
(66) No-return valve (clutch control)
(67) accumulator