UD Trucks QUESTER Series, Руководство пользователя

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6.DAILY INSPECTION
6-7
Engine performance when run-
ning at low speed and when accel-
erating
With the engine warmed up, check if
it continues to run smoothly while
idling. Also, see the tachometer to
c h e c k i f t h e e n g i n e i d l e s i n t h e
s p e c i f i e d r a n g e , R e f e r, “ E n g i n e
specification” in Chapter 11.
•
Gradually accelerate the engine
and check if the accelerator pedal
moves without sticking and if the
engine runs smoothly without
knocking
Air charging performance
1. Air pressure, front brake
2. Air pressure, rear brake
Use the air pressure gauge to check
t h e a i r p r e s s u r e i n c r e a s e . I t i s
n o r m a l i f t h e t i m e t a k e n f o r t h e
indicator in the display raises similar
to value in the table.
If it does not raise normally, there
could be a leak in the air system or
other issues. Contact an authorised
U D Tr u c k s a u t h o r i s e d d e a l e r
immediately.
• Check if the air pressure shown in
the air pressure gauge is normal.
It is normal if the display indicator
is in the range as shown in the fol-
lowing table.
Standard
time
Engine
speed
(Idling)
Air pressure
Under 12
min.
600 rpm
0
→
804 kPa
{0
→
8.04 bar}
Pneumatic
system pressure
770-930 kPa
{7.9 - 9.5 kgf/cm²}
NOTE
If air reservoir is filled with a
pressure of 0 kPa {0 bar}, the
gauge indicator in display will
not move for a while after the
engine is started. Also at times
the two indicators will not start
moving at the same time. This is
not gauge malfunction. This
h a p p e n s b e c a u s e t h e r e i s a
p r e s s u r e r e g u l a t i o n v a l v e
between the air compressor and
the brake air reservoir.