Massey Ferguson 5400 - Issue 1.a
09I01.11
Unassisted brake master cylinders
Pedals coupled
• Braking and pressure balancing
The effort applied to the two pedals is transmitted by
the rods (5) to the pistons (4) which move in the
bores of the two master cylinders. The two
valves (1) close the supply ports. The two balancing
valves (3) are opened by the pistons (4) and valve
balls (2). Pressure balancing is ensured in the two
master cylinders by the balancing junction (D).
Oil under pressure is also directed to the ports (C)
and (C’) of the main brake circuit.
• Trailer braking
The continuous movement of the pistons (4) and (6)
closes the valves (F) et (F’). The pressurised
chambers (E) and (E’) supply the trailer brake control
valve via ports (A) and (A’).
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