Section 5 • Troubleshooting
5 - 2
AL8000HT Light Tower
Part No. 116478
REV A
September 2008
Troubleshooting Guide
The engine/generator set is tested and set at the factory for proper operation in the field. These units
should never require additional adjustments in the field. If needed, adjustments should only be made by a
qualified service technician, otherwise the manufacturer’s warranty may become void.
TROUBLE
POSSIBLE CAUSE
REMEDY
1.Boom will not rise to
a.Travel lock pin is in place
a.Remove travel lock pin
the operating position.
b.Defective cable
b.Have a trained
or pulley
mechanic examine and
repair as needed
2.Boom will not telescope.
a.Problem with hydraulics
a.Trouble shoot
hydraulic system
and service as needed
b.Broken cable or pulley
b.Have a trained
mechanic examine
and replace as needed
c.Extend cylinder damaged
c.Inspect extend cylinder
3.Engine will not turn over
a.Dead battery
a.Check the battery voltage or
loose cables
b.Bad starter
b.Check voltage at
starter and replace
as needed
4.Engine turns over but will
a.Empty fuel tank
a.Fill tank with #2 diesel fuel
not start
b.Clogged fuel lines or filter
b.Check and clean the fuel
system as needed
c.Leaking fuel lines or a loss
c.Replace any leaking fuel lines
of prime
and tighten connections
d.Heater elements burned out
d.Replace heater elements
e.Fuel line solenoid is not open
e.Replace fuel line solenoid
5.Engine runs rough
a.Clogged or leaking fuel system
a.Replace fuel lines, tighten all
connections, inspect the pickup
tube and inspect the fuel filter
b.Clogged exhaust system
b.Clear the exhaust system
c.Clogged air filter
c.Clear air filter
d.Clogged or stuck fuel injectors
d.Have a trained
mechanic examine
e.Valve clearances are out of
e.Have a trained
adjustment or the valve spring
mechanic examine
may be damaged
f.Defective governor or fuel pump
f.Have a trained
mechanic examine
