MASSEY FERGUSON 5400 - Page 616

Massey Ferguson 5400 - Issue 1.a
09K01.14
57 l/min Open Centre tests
Supply to the steering spool valve
- Connect a pressure gauge fitted with a coupler
ref. 3582045M1 to the diagnostics connector (1) of
the right-hand hydraulic cover (Fig. 11).
- Turn the steering to full lock and check that:
P5 = 170 bar at 1000 rpm and at 2200 rpm.
Supply to the steering ram
Test (Fig. 12)
- Connect a pressure gauge by-pass to each hose pipe
of the steering ram.
- With steering at neutral, check that P6 = 18 bar.
- Turn the steering wheel.
Pressure P6 should be:
- between 18 and 170 bar at the ram supply side ;
- 18 bar in the return line.
Steering circuit leak test
- Run the engine at 1000 rpm.
- Turn the steering on full lock and apply a torque of
4 Nm to the axis of the steering wheel. The wheel
must not turn more than 2 rpm.
If the wheel turns more than 2 rpm, disconnect the
pipes that supply the rams, block the two ports and
then apply the same torque (4 Nm) to the steering
wheel. If it turns less than 2 rpm, there is a leak at
the level of the ram.
Fig. 11