Nilfisk-Advance 7765 Serie Instrucciones De Uso página 36

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A-36 / ENGLISH
GENERAL TROUBLESHOOTING
PROBLEM
Poor scrubbing
Engine runs, but machine
will not move on level
ground
Machine moves slowly
Hydraulic pump making
excessive noise
A-36 - FORM NO. - 56041801 - 7765
PROBABLE CAUSE
1. Worn scrubbing brushes
2. Incorrect method of operation
3. Wrong cleaning agent or mixture
4. Poor solution distribution
1. Foot pedal and/or linkage jammed or not
adjusted
2. Front wheels jammed or brakes locked
3. Hydraulic pump trouble
4. Rear wheel hydraulic motor, broken shaft
key, broken shaft, etc.
1. Low hydraulic oil level
2. Brake dragging
3. Hydraulic oil temp, too high
4. Worn hydraulic pump or drive wheel motor
1. Clogged inlet strainer or suction line
2. Air bubbles in hydraulic fl uid
3. Hydraulic pump is worn or damaged
REMEDY
1. Inspect brushes. If worn to ½" (1.3cm)
or less, replace all 3 brushes
2. Check scrubbing procedures, brush
pressure, type of brush, solution fl ow, &
cleaning chemical used. For extreme
conditions double scrubbing may be
necessary.
3. Use Nilfi sk recommended materials
4. Clean out distribution tube & metering
holes to brushes. Check feed hose &
clean if necessary. Check valve & cable
control system.
1. Check pedal linkage
2. Check wheels and brakes
3. Check & repair pump, check tow valve.
See CESSNA information.
4. Check & repair. See Char-Lynn
information
1. Add oil to reservoir
2. Check brakes
3. Check oil level, add SAE 5 (FORD Type
F) ATF, if required
4. See hydraulic CESSNA
1. Clean inlet strainer. Drain & fl ush
reservoir, if oil is dirty. Refi ll with clean
SAE 5 (FORD Type F) ATF.
2. Check for low hydraulic fl uid level,
leaking fi ttings or hoses
3. See CESSNA Pump Section

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