King Long XMQ6900J series, Operating Manual

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Maintenance and service
M-14
System Item Operation Technical requirement
Front axle
（
DF & FS
series
）
Brake clearance Check &
adjust
Rear axle
（
DF & FS
series
）
Brake clearance Check &
adjust
Air
suspension Fasteners Check/tighten Check and tighten the bolts, rods, height control
valves, air springs, shock absorbers, anti-roll bars.
The top covers of air
springs, height
control valves and the
joints of the air
course Check Listening and wiping the liquid soap. If find any
place is leaky, please either tighten the joints or
change the seal tape and clean the accumulated
water, oil in the piping and the dirt in the joints
Air
suspension
The exterior surface
of air springs Check Find out the places which are abraded, distended,
bumped or cut
The air spring Change The surface of the air spring is damaged and
appears the cord fabric
The air spring Adjust/check If air spring interfere and knock with the
components around it, please adjust it in time.
The air spring
surface Check/clean Clean the lubricant grease on the surface, the dirt
on the piston, the abnormal things placed between
the piston and air spring.
The air spring Check If there is leakage in the joints of the air springs
and the top cover, the air springs should be taken
apart, then check whether the edges of the air
springs and the top cover or the tapered sealing
zone are distorted. Change it if it is distorted.
The bumper Check It’s damage maybe the root damage of the tapered
sealing zone
The height control
valve Check If a height control valve controls two air springs
and one air springs is leaky, the other air springs
has not air too.
Air
suspension
shock
absorber
Shock absorber Check The external damage, the welding damage and the
sealing damage result to the leakage of the shock
absorber.
The rod Check Check the rubber of the rod ball head and the
rivet of the sleeve pipe and the ball head. Check
the clamp and the tighten bolts if the it is the
adjustable rod
The rubber liner Check Check the ball joints of the anti-roll bar and the
rubber liner bushing of the boom