MASSEY FERGUSON 5400 - Disassembling and Reassembling the High Pressure Valve

Massey Ferguson 5400 - Issue 1.b
09B01.13
Right-hand cover – 57 l/min Open Centre
D . Disassembling and reassembling
the high pressure valve
Operation (Fig. 5)
If pressure "P" rises above 200 bar ± 5 bar, the spring
(4) is compressed, opening the valve (7) to allow oil to
pass into the housing via port R.
Preliminary operation
If necessary, take off the right-hand side rear wheel.
Position a safety stand.
Disassembly (Fig. 11)
34. Unscrew the plug (1). Recover the shims (2) and
take out the spring (4).
35. Remove the O’ring (5), extract the body (6) with
the valve (7) and the washer (8) from the right-hand
cover.
N
OTE: The ball (9) is crimped in the body of the
valve.
Reassembly (Fig. 11)
36. Check that the valve (7) slides freely in the valve
body (6).
37. Place the washer (8), fit the valve body (6) with the
valve (7) into the cover. Position the O’ring (5).
38. Fit the spring (4), the shims (2) and tighten the plug
(1) to a torque of 50 - 60 Nm.
Final operation
Refit the wheel (if removed). Tighten nuts (see chapter
6).
Fig. 11