Maintenance and service
M-18
System Item Operation Technical requirement
The air
suspension
The rubber bal
joints
Change
There are gaps on the surface of the rubber
The surface of the rubber become adhesive, brittle and the rubbe
drop off seriously
The connection of the metal and the rubber is damaged. The partia
depth is up to 6mm
The rubber ball joint rotates in the inner hole of the ball head a
will
The heigh
control valve.
Check
adjust
Check the equilibrium position of the adjustment bar of the heigh
control valve.
The rubber of
The link rod
Change
Change it if the rubber of link rod becomes ageing, brittle, adhesive
and lose its elasticity
The
connecting
members of
the shock
absorber
Check
change
Check the connecting members of the shock absorber if they are
damaged please adjust or change them.
the rubber
Check
change
If the rubber is crack, brittle, adhesive and loses its elasticity please
adjust or change them.
The height
Check
adjust
Charge the air springs and adjust to the design height, then check
the wheel base, the height of the vehicle body and the two side’
wheels’ locations which are relative to the frame. If it is necessary
please adjust the height of the air springs and the length of the rod
in order to arrive to the design request
Brake system
Brake pedal
free stroke
Check Break pedal free stroke 12
～
15mm
Brake valve
and pipe joint
Check
and
fasten
Break valve and pipe joint connection reliable and without air
leakage
ABS system
Check
ABS working properly
Auxiliary
brake, stop
brake free
stroke
Check Effective, 20% dual direction stopping at slop reliable
Retarder
Check
Retarder working properly
Engine
exhaust brake
Check
Exhaust brake working properly
Body, frame
door lock
function
Check
Lock function good
Sealing good
cabin door
sustain pole
or air spring
Check
Cabin door lock function good, sustain pole or air spring
effective
inside and
outside mirror
Check
Complete, no crack, effective, mirror clean, installation firm and
reliable
Summary of Contents for XMQ6900J series
Page 116: ...Common trouble and elimination C 16 Fault symptom Possible cause Eliminating method speed...
Page 128: ...Appendix A 4 Air braking schematic diagram...
Page 129: ...Appendix A 4 Electric schematic diagram of the complete vehicle 1...
Page 130: ...Appendix A 4 Electric schematic diagram of the complete vehicle 2...
Page 131: ...Appendix A 4 Electric schematic diagram of the complete vehicle 3...
Page 132: ...Appendix A 4 Electric schematic diagram of the complete vehicle 4...
