I. Brush Fails to Rotate or Lacks Power

Symptoms: Broom is stationary, rotates slowly, produces unusual noises, or slips under load.

Hydraulic Motor Failure

• Inspect hydraulic hoses for leaks or loose fittings; tighten or replace seals.

• Measure hydraulic pressure against equipment specs. If pressure is low, inspect the pump and relief valves.

• If internal wear is detected, replace the hydraulic motor.

Drive Chain or Gearbox Damage

• Chain Drive: Check for loose, derailed, or seized links. Tension, lubricate, or replace the chain as needed.

• Gearbox: Check oil levels. If grinding or seizing occurs, refill oil or disassemble for component replacement.

Seized or Damaged Bearings

• Inspect end bearings for heat or grinding sounds. Clean and regrease, or replace the bearing assembly.

Foreign Object Entanglement

• Check for wire, rope, or debris wrapped around the broom core. Shut down the machine before manually clearing obstructions.

Control System / Solenoid Failure

• Inspect the electrical circuit, valve spool, and solenoid coils for proper operation.
  
  

II. Poor Cleaning Performance

Symptoms: Debris left behind, skipped patches, excessive dust, or uneven sweep patterns.

Worn or Damaged Bristles

• Inspect bristle length. If worn to less than 50% of the original length, replace the brush wafers or broom core.

Insufficient Downward Pressure

• Adjust the hydraulic float setting or mechanical spring tension. Ensure the brush makes consistent contact with the surface.

Improper Leveling or Angle

• If the sweep pattern is uneven, adjust the mounting bracket, linkage, or pitch angle to ensure the broom is parallel to the ground.

Low Operating Speed

• Verify that the hydraulic flow meets the required GPM/LPM. Adjust engine RPM or check the flow control valve.

Incorrect Bristle Material

• Match the bristle type to the surface. Use Polypropylene (PP) for general debris and Wire/Poly Mix for heavy-duty or packed material.

III. Abnormal Noise, Vibration, or Shaking

Symptoms: Mechanical clunking, humming, or excessive machine vibration during rotation.

Bearing Failure / Contamination

• Localized heat or grinding indicates dry or contaminated bearings. Flush with grease or replace.

Bent or Imbalanced Broom Core

• Significant "jumping" usually indicates a bent center shaft or uneven bristle wear. Straighten or replace the broom core.

Loose Mounting Hardware

• Perform a full walk-around inspection. Tighten all bolts on the mounting plate, motor housing, and pivot pins.

Drive System Misalignment

• Correct chain/gear alignment and tension to prevent tooth skipping or premature wear.

Hydraulic Cavitation / Resonance

• Bleed air from the system. Inspect the suction filter and adjust the flow control valve to eliminate resonance.