9
Troubleshooting Guide
Problem
Cause
Solution
The scraper does not work when the pump is
generating pressure.
Severe blockage in wheel drive motor hoses. Check for blockage and replace hose(s) if
necessary.
Wheel drive motors are defective.
Call NFE customer service for assistance.
The hoses are worn.
Hoses are rubbing on the components.
Replace and protect the hose.
Hose has been exposed to poor environmen-
tal conditions.
Replace hose and protect equipment from
poor conditions.
The machine makes an unusually loud hiss-
ing or whistling noise.
Fluid is passing over relief valves.
If noise is continuous, call NFE customer
service for assistance.
There is air in the hydraulic circuit.
Check all suction lines; tighten all hose con-
nections and fittings.
Oil deposits are evident on the inner sides of
the wheels.
Seal is worn.
Have shaft seals replaced by a specialist.
Hose fitting is loose or worn.
Tighten hose fitting; replace hose or fitting if
necessary
The machine has no power with the engine
running at 2,950 RPM.
Valve adjustment or hoses might have leaks. Contact NFE customer service immediately.
Do not operate in this condition.
The scraper does not react when the motion
control joystick is actuated.
The hydraulic oil is very cloudy.
Water has entered hydraulic tank.
Drain and clean tank thoroughly, change oil,
and repair tank if necessary.
Oil is contaminated with dirt.
Drain and clean tank thoroughly, and change
oil.
Air has entered the circuit. Stop machine and
repair immediately!
Check all suction lines; tighten all hose con-
nections and fittings.
There is an excessive amount of oil on chas-
sis.
Outside oil spilled on chassis.
Clean machine thoroughly and see if the
problem persists.
Loose hose connections.
Tighten loose hoses.
Loose tank fittings.
Tighten loose fittings.
Hydraulic oil and/or oil foam leaking from oil
tank.
Oil level is too high.
Drain tank to correct level.
Oil level is too low.
Fill tank to correct level.
Vent in return filter is blocked.
Check for blockage.
Air has entered the circuit. Stop machine and
repair immediately!
Check all suction lines; tighten all hose con-
nections and fittings
Engine dies or cuts out.
Fuel tank is empty.
Change or fill fuel tank.
Oil is low.
Fill oil to proper level.
Operator is not seated properly.
Ensure operator is seated correctly.
Red ignition light stays on.
Oil is Low.
Fill oil to proper level.
Machine is overheating.
Let engine cool; add coolant to proper level.
Machine doesn’t start.
Machine needs to be primed.
Press primer button once, then restart
machine.
