MASSEY FERGUSON 5400 - Page 610

Massey Ferguson 5400 - Issue 1.a
09K01.8
57 l/min Open Centre tests
Checking the pressure and flow rate of the
trailer brake
Pressure
- Connect a pressure gauge to the trailer brake
connector (1) (Fig. 5).
- Run the engine at 2200 rpm.
- Latch the brake pedals and apply a progressive force.
The pressure read should increase gradually until it
reaches P2 = 130 - 150 bar maximum (Fig. 4).
Flow rate
- Connect a pressure gauge to the trailer brake
connector (1) (Fig. 5).
Connect the return directly to the housing via the
transmission filler port.
- Run the engine at 2200 rpm.
- Activate the latched brake pedals.
- Check Q6 = 24 - 31 l/min (Fig. 4).
Checking the lift control shock valve (1)
(Fig. 6)
- Disconnect the supply hose pipes on the rams and
connect them to a hand calibrating pump.
- With the engine stopped and the lift control valve in
neutral position, inject pressure into the circuit.
- Check the valve opening pressure:
P3 = 200 - 210 bar (Fig. 4).
Fig. 5
Fig. 6