MT86H
Operation
and
Maintenance
Manual
111
Fig
4
‐
38
1. Brake pedal
Fig
4
‐
39
Brake pressure gauge
Fig
4
‐
40
Exhaust brake rocker handle
4.8 Operation and maintenance of brake
system
4.8.1
Composition
of
brake
system
The brake system of MT86 mining dump truck
mainly consists of two-circuit service brake
(foot brake), auxiliary brake (engine exhaust
brake) and emergency/parking brake (hand
brake).
The two-circuit pressure brake is operated
through the pedal. Its working pressure is 0.8
Mpa, and the disconnection pressure of
pressure regulating valve is 0.85 Mpa. The
first circuit acts on wheels of middle and rear
axles, and the second circuit acts on the
wheels of front axle. Once the pressure in one
of air reservoirs of the two circuits is below
0.55 Mpa, the low brake pressure warning
indicator on instrument panel will light up,
and at this moment, it is required to stop the
vehicle immediately and find out the causes of
pressure falling.
Continuously and repeatedly applying full
brake in a short time may also lead to pressure
falling below 0.55 Mpa.
Criteria for pressure inspection: Shut off
engine and apply hand brake. In 2h, the
1
Summary of Contents for MT86H
Page 9: ...MT86H Operation and Maintenance Manual 1 Chapter I Safety ...
Page 10: ...MT86H Operation and Maintenance Manual 2 ...
Page 18: ...MT86H Operation and Maintenance Manual 10 ...
Page 19: ...MT86H Operation and Maintenance Manual 11 Chapter II Product Introduction ...
Page 20: ...MT86H Operation and Maintenance Manual 12 ...
Page 25: ...MT86H Operation and Maintenance Manual 17 Chapter III Operation ...
Page 26: ...MT86H Operation and Maintenance Manual 18 ...
Page 64: ...MT86H Operation and Maintenance Manual 56 ...
Page 142: ...MT86H Operation and Maintenance Manual 134 ...
Page 143: ...MT86H Operation and Maintenance Manual 135 Chapter V Maintenance ...
Page 144: ...MT86H Operation and Maintenance Manual 136 ...
Page 160: ...MT86H Operation and Maintenance Manual 152 3 Lubrication diagram ...
Page 161: ...MT86H Operation and Maintenance Manual 153 Chapter VI Annex ...
Page 165: ...157 6 5 Schematic diagram of electrical system ...