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OPERATING CONTROLS AND PROCEDURES
5540F/YB5515 OPERATOR’S MANUAL
3-8
Published 10-21-2011, Control # 055-03
Transmission Low Oil Pressure Warning Light
See Figure 3-16 for the following procedure.
When this light is illuminated it is an indication that the
t r a n s m i s s i o n o i l p r e s s u r e i s l o w e r t h a n w h a t i s
recommended for proper operation of the transmission. The
transmission could be damaged if it is run with low oil
p r e s s u r e . I f t h i s l i g h t i l l um in a t e s d u r i n g o p e r a t i o n ,
i m m e d i a t e l y s h u t d o w n t h e e n g i n e a n d h a v e t h e
transmission serviced.
Transmission High Temperature Warning Light
See Figure 3-17 for the following procedure.
When this light is illuminated it is an indication that the
transmission temperature is above the proper operating
temperature. High operating temperature could cause
serious damage to the transmission. If this light illuminates
during operation, immediately shut down the engine and
have the transmission and/or the transmission cooling
system serviced.
Brake System Low Pressure Warning Light
See Figure 3-18 for the following procedure.
When illuminated, the light indicates that there is a loss in
brake pressure. At this point there is still enough pressure to
stop the crane. Immediately stop the crane and shut off the
engine. Do not drive the crane until the problem has been
repaired. The light will illuminate briefly when the brake
system charges during operation.
p1039
Transmission Low Pressure
Warning Light
FIGURE 3-16
WARNING
When the low brake pressure warning light is illuminated,
immediately stop and shut down the crane.
DO NOT
drive
the crane with the warning light illuminated. Brake failure
is possible and the result could be serious personal injury
and property damage.
p1038
Transmission High Temperature
Warning Light
FIGURE 3-17
p1037
Brake System Low Pressure
Warning Light
FIGURE 3-18
Reference Only