MT86H
Operation
and
Maintenance
Manual
109
5) Common fault causes and troubleshooting methods
Common
faults
Causes
Troubleshooting
methods
Hard
steering
1.
Oil
in
oil
tank
is
insufficient
2.
Air
invades
into
oil
passage
3.
Filter
or
oil
passage
is
blocked
4.
Oil
pump
pressure
is
insufficient
5.
Inner
leakage
of
steering
gear
is
severe
6
Front
wheels
(braking
non
‐
return)
are
blocked
7.
Tire
pressure
is
insufficient
8.
Steering
column
interferes
with
universal
joint
9.
Overload
1.
Check
oil
level
of
oil
tank
and
refill
it
as
specified
2.
Exhaust
and
check
oil
level
and
tightness
of
pipeline
connectors
3.
Clean
filter
or
dredge
or
replace
oil
passage
4.
Maintain
oil
pump
5.
Identify
leakage
and
repair
6.
Regulate
or
replace
it
7.
Inflate
8.
Adjust
it
9.
Reduce
load
Steering
gear
oil
leakage
1.
Oil
seal
or
O
ring
is
damaged
2.
Oil
pipe
is
damaged
3.
Oil
pipe
joint
leaks
oil
4.
Oil
viscosity
is
insufficient
1.
Check
and
replace
oil
seal
or
O
ring
2.
Check
and
replace
oil
pipe
3.
Replace
sealing
ring
and
tighten
connectors
4.
Use
oil
properly
Oil
spillage
from
oil
tank
1.
Level
is
too
high
2.
Oil
inlet
is
blocked
3.
Oil
pump
is
worn
1.
Adjust
it
2.
Dredge
oil
passage
3.
Replace
it
Hard
steering
reversal
1.
Tire
pressure
is
insufficient
2.
Air
invades
into
oil
passage
3.
Oil
return
hose
is
twisted
and
blocked
4.
Steering
valve
is
jammed
5.
Steering
gear
is
too
tight
6.
Connection
is
loose
1.
Inflate
2.
Perform
maintenance
and
exhaust
3.
Replace
it
4.
Regulate
or
replace
steering
valve
5.
Adjust
clearance
6.
Check
and
adjust
it
Different
left
‐
right
steering
degree
1.
Steering
valve
is
asymmetric
2.
Control
valve
is
blocked
with
dirt
3.
Leakage
at
both
sides
of
steering
gear
differs
4.
Air
exists
in
single
cavity
5.
Master
pins
and
camber
of
tires
at
both
sides
are
asymmetric
1.
Regulate
or
replace
valve
assembly
2.
Clean
control
valve
3.
Replace
sealing
ring
4.
Exhaust
air
5.
Adjust
parameters
of
truck
Heavy
fast
steering
1.
Oil
in
oil
pump
is
insufficient
2.
Inner
leakage
of
steering
gear
is
severe
3.
Air
invades
into
oil
passage
1.
Maintain
oil
pump
and
refill
oil
2.
Maintain
and
replace
seals
3.
Check
tightness
and
connections
and
exhaust
air
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 ...