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FAULT SYMPTOM
Not rotating
Rotating slowly
Bouncing
Not dropping
Lifts intermittently
Air leaking from Wide Sweep Brush
Brush not slewing -
dual sweep machines
Chapter - Fault Diagnosis
14:6
WIDE SWEEP BRUSH
POSSIBLE CAUSE
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 valve C
6.
Check hydraulic system for pressures for diagnosis of
problem
1.
Motor worn
2.
Hydraulic pump worn
3.
Brush end bearing seized
4.
Incorrect oil flow and/or pressure
1.
Regulator adjustment incorrect
2.
Brush stock bent
3.
Linkage pins/brackets worn/damaged
4.
Air damping system not working
1.
Check feed to solenoid/Plug LED V23 and V24
2.
Solenoid faulty use man override
3.
Switch on control box faulty - check using J-plex
4.
Linkage/pivots/cylinders seized
1.
Faulty or loose electrical connections while in working
mode - check using J-plex
2.
Check solenoid using manual override
1.
Shuttle valve or regulator defective
2.
Lift ram seals worn
1.
Check slew cylinder for damage/corrosion
2.
Solenoid V23 (LH) or V24 (RH)
3.
Check slew ram for air leaks
VT551 - Maintenance
Page Issue 01
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