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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.
Page Issue A
SWEEP GEAR
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