UD Trucks QUESTER Series, Руководство пользователя

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8.INSPECTION AND MAINTENANCE
8-8
• Make sure that the cover and the
air cleaner filter are installed in an
accurate manner. If not correctly
installed, suction of dust into the
cylinder may cause a malfunction.
• Do not touch the filter paper of the
air cleaner filter with hand or any
tools. Do not allow lubricants to
come in contact with the filter
paper.
Air-conditioning filter-nylon mesh
A n y l o n m e s h f i l t e r, f i l t e r s t h e
i n c o m i n g a i r. T h i s m e s h f i l t e r i s
accessible behind the front panel.
Air conditioner belt tension
• Check that none of the grooves in
the belt is missing.
• Check that the belts are not
cracked. Cracked belts must be
replaced.
• There must not be any dirt or
grease on the belts or the contact
surfaces of the belt pulley.
• Check the automatic belt ten-
sioner.
To inspect the compressor belt ten-
sion
P u s h d o w n t h e b e l t b e t w e e n t h e
pulleys with a constant force. Check
to see that the tension pulleys move
with constant speed. Then release
the belt and check to see that the
tension pulleys return to the original
p o s i t i o n b y m e a n s o f t h e s p r i n g
force.
Replace the belt tensioner when any
of the following conditions exist:.
•
If the pulleys do not move when
pushing down the belt.
• If there are any abnormalities in
the pulley motion.
• If the pulleys do not return when
releasing the belt.
• As per maintenance intervals.
DANGER
Do not check or adjust drive belt
unless engine is switched OFF
a n d t h e t r a n s m i s s i o n i s i n
neutral.