MASSEY FERGUSON 5400 - Description of the 17 Bar Low Pressure Valve

Massey Ferguson 5400 - Issue 1.a
09H01.5
17 bar - 5 bar and 1.5 bar valves - Open centre
B . Description of the 17 bar low
pressure valve
Supply (Fig. 3)
As soon as the engine is started, the return oil from the
steering unit (Orbitrol) enters port O and exits by port
P of the left-hand cover; then it is directed towards the
low pressure circuit of the right-hand hydraulic cover in
order to supply:
- power shuttle (if fitted)
- speedshift unit
- changing between Hare / Tortoise range
- 4WD clutch
- front and rear differential locks
- rear PTO brake and clutch
- front power take off (if fitted).
Fig. 3