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Refitting
4. Clean the mating faces of the hydraulic cover and
the valve.
5. Replace the O'rings (1) (2)
6. Refit the valve, place and tighten the screws (3) to
a torque of 21 -24 Nm.
7. Reconnect:
- the pipe (4) of the trailer brake connector and the
supply hose (1) from the auxiliary spool valve,
- the hose pipe (2) of the pilot flow housing.
8. If necessary, bleed the main brakes and the trailer
brake, and check the pressure in the trailer brake
mechanism (see chapter 9).
Final operation
9. Refit the wheel. Remove the safety stand. Tighten
the wheel nuts or screws (depending on assembly)
(see chapter 6).
Massey Ferguson 5400 - Issue 1.b
(Fig.
4).
Trailer braking - Open centre
Fig. 4
09D01.7
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