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V Range 501
l
651
l
801 Maintenance Manual
MA8:6
Chapter - Fault Diagnosis
Wide Sweep Brush
Fault Symptom
Possible Cause
Not rotating
1.
Worn drive adaptor and plate.
2.
Bearings
seized.
3.
Motor
seized.
4.
Foreign
matter
jammed
in
brush.
5.
Check electrical feed to solenoid/Plug LED (see Modus
Operandi).
6.
Check hydraulic pressure to aid fault diagnosis.
Rotating
slowly
1.
Motor
worn.
2.
Hydraulic
pump
worn.
3.
Brush
end
bearing
seized.
Bouncing
1.
Spring regulation adjustment incorrect.
2.
Brush
stock
bent.
3.
Linkage
pins/brackets
worn/damaged.
4.
Air
damping
system
not
working.
Not dropping
1.
Check feed to solenoid/Plug LED V4.
2.
Solenoid
faulty.
3.
Switch
on
control
box
faulty.
4.
Linkage/pivots/cylinders
seized.
Lifts intermittently
1.
Faulty or loose electrical connections.
Air leaking from wide sweep brush
1.
Shuttle valve or regulator defective.
2.
Lift
ram
seals
worn.
Brush not slewing
1.
Check slew cylinder for damage/Corrosion.
2.
Check segment 5 of pneumatic valve block.
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