Maintenance & Adjustment
186
D760.H03E-001.H1907
Inspection of Air Dryer
The air dryer is used to dry the compressed
air from compressor, thus supplying dry and
clean air to the air reservoir.
Replacement cycle
Cylinder or desiccant of air dryer: every
100,000km or 12 months, or shorter if the vehi-
cle always runs under adverse conditions (such
as moist or hilly area).
Inspection of water logging
Check the air reservoir for water logging at
the end of driving each day in winter or in chilly
area, or otherwise once a week. For this pur-
pose, pull the water drain valve under the air
reservoir or the steel hook under the reservoir
frame. If any water is found, drain off the water,
and replace the cylinder or desiccant at Dong-
feng service station immediately.
Inspection of exhaust outlet
If air leakage is detected at the exhaust outlet of the air dryer assembly during
inflation before vehicle start, please check the exhaust valve. If the exhaust outlet fails
to be closed tightly due to foreign matters, oil dirt or others, please clean the exhaust
valve.the upper limit, it is normal that the air dryer exhaust outlet will exhaust for pres-
sure relief. Only when the air pressure is consumed down to the lower limit will the
exhaust valve close, and the pipeline system will be re-inflated.
Heating of air dryer
If the ambient temperature is lower than 5ºC, activate the electric heater of the air
dryer to prevent inoperative dryer due to icing at exhaust outlet. Turn on the air dryer
heater switch on the instrument panel, and the air dryer heating indicator lamp will be
on simultaneously.
CAUTION:
The sliver cylinder is provided with oil-filtration function and can filter
most oil in the compressed air to prolong the service life of parts of the
brake system. The sliver cylinder must be replaced together with the dry-
ing cylinder.
Air dryer heater switch
Air dryer heating indicator lamp
