November 2006
28 AL4000 Light Tower Part No. 833002 Rev A
TROUBLESHOOTING
The engine and generator are set at the factory. These units are tested and set to 1800
RPM at 60 HZ for proper operation in the field. These units should never require additional
adjustments in the field. 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.Yoke pin is in place a.Remove yoke pin
the operating position. b.Defective cable b.Have a trained
or pulley mechanic examine and
repair as needed
c.Defective winch c.Have a trained
mechanic examine
and replace as needed
2.Boom will not telescope. a.Defective winch a.Have a trained
mechanic examine
and replace as needed
b.Broken cable or pulley b.Have a trained
mechanic examine
and replace as needed
c.Telescope lock pin closed c.Open telescope lock pin
3.Engine will not turn over a.Dead battery a.Check the battery voltage or
loose cables
b.Engine has seized due to loss b.Have a trained
of fluids mechanic examine and
repair 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
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