Snorkel AB80J - Manual (Page 69)

Chapter 11 – Troubleshooting
AB80J/AB85J – 0420453 65
Symptom
Engine will not start from
upper controls.
Engine starts from the upper
controls but no boom functions
work – machines with AC gen-
erator option only.
Engine dies when the control
selector switch at the lower
controls is placed in the upper
control position.
After starting the engine, it will
not throttle up and dies when a
function is operated – GM 2.4
engines only.
Constant tone alarm sounds
while the engine is running.
Constant tone alarm sounds
and engine shuts off.
All functions stop working.
Continued on next page...
Possible Cause
The main system circuit breaker on
the lower or upper control panel has
tripped. The engine will not crank.
The machine/generator switch is in
the generator position.
Upper controls are not set-up properly.
Function is operated within a few
seconds after starting the engine.
High engine temperature.
Low oil pressure.
No alternator current/broken fan
belt.
High engine temperature.
Low oil pressure.
Low fluid level in reservoir.
Engine or pump failure.
Circuit breaker is tripped.
Corrective Action
Push the main system circuit breaker
button back in. If the button pops
back out, refer the problem to a quali-
fied service technician.
Place the switch in the machine posi-
tion to operate machine functions.
At the upper controls, pull the emer-
gency stop button upward and turn
the anti-restart master switch on.
Normal operation for GM 2.4 engine.
There is a 7 to 10 second delay after
each engine start before the throttle
will go to mid or high to prevent an
engine overspeed under certain start-
ing conditions.
Lower the platform and reduce the
engine speed to idle for five minutes.
Turn the engine off and let it cool. Do
not restart the engine until the cause
of overheating has been corrected.
Lower the platform and turn the
engine off. Do not restart the engine
until the cause of low oil pressure has
been corrected.
Turn the engine off. Do not restart the
engine until the cause of no alternator
current has been corrected or the fan
belt is replaced.
Let the engine cool. Do not restart the
engine until the cause of overheating
has been corrected.
Do not restart the engine until the
cause of low oil pressure has been
corrected. The engine can be re-
started with low oil pressure, but it
will only run a few seconds before it
shuts off again.
Check fluid level. Add correct type of
fluid if necessary.
Manually stow the machine using
the emergency power system or the
emergency lowering knob.
Push circuit breaker button in to
reset.