Wheel Tractor Scraper – Procedure

Use this checklist to follow critical maintenance procedures before operating wheel tractor scrapers on site.

Key Maintenance Procedures

Follow these detailed procedures for critical maintenance tasks on your wheel tractor scraper. Always refer to your specific machine's service manual for model-specific instructions and specifications.

Hydraulic System Service

  • Park machine on level ground and engage parking brake
  • Allow hydraulic system to cool completely before service
  • Clean area around hydraulic tank and components
  • Relieve system pressure before opening any components
  • Drain old hydraulic oil into appropriate container
  • Replace all specified filters using proper torque
  • Install new O-rings/gaskets with light oil coating
  • Fill with manufacturer-specified hydraulic oil type
  • Start engine and cycle all hydraulic functions slowly
  • Check for leaks and proper operation
  • Recheck oil level after system warm-up

Cutting Edge Replacement

  • Position scraper on firm, level ground
  • Lower bowl to rest on blocking or stands
  • Shut down engine and engage parking brake
  • Remove bolts securing cutting edge
  • Remove worn cutting edge
  • Clean mounting surface thoroughly
  • Install new cutting edge with new hardware
  • Torque bolts in proper sequence to specifications
  • Check for proper clearance and adjustment
  • Properly dispose of worn cutting edge

Articulation Joint Lubrication

  • Park machine on level ground with articulation straight
  • Clean all grease fittings thoroughly
  • Inspect articulation joint for damage or wear
  • Pump grease into all fittings until fresh grease appears
  • Articulate machine fully in both directions
  • Check for any binding or unusual movement
  • Re-grease fittings after articulation
  • Wipe excess grease to prevent dirt accumulation
  • Inspect pins and bushings for wear
  • Document service and grease type used

Brake System Inspection

  • Check for proper brake pedal feel and travel
  • Inspect air system for leaks using soap solution
  • Drain water from air tanks
  • Test service brake stopping capability
  • Test parking brake holding capability on grade
  • Inspect brake chambers for damage or leaks
  • Check brake lines for secure mounting and damage
  • Verify proper function of low air pressure warning
  • Test brake lights operation
  • Document brake system condition and performance

Maintenance Schedule Guidelines

Follow these maintenance intervals for optimal wheel tractor scraper performance and longevity. Adjust intervals based on operating conditions, with more frequent service under severe conditions.

Daily/10 Hours

  • Check all fluid levels
  • Inspect for leaks and visible damage
  • Check tire condition and pressure
  • Drain water from air tanks
  • Check cutting edge condition
  • Clean radiator and coolers externally
  • Test lights, horn, and backup alarm
  • Check operator controls

Weekly/50 Hours

  • Lubricate all grease points
  • Check wheel nut torque
  • Clean air filter pre-cleaner
  • Check battery electrolyte level
  • Inspect all hoses and belts
  • Check articulation joint
  • Inspect fire suppression system
  • Check and adjust track tension (if applicable)

250 Hours

  • Change engine oil and filter
  • Replace fuel filters
  • Clean or replace air filter elements
  • Take oil samples for analysis
  • Check cooling system protection level
  • Inspect brake system components
  • Inspect bowl, apron, and ejector components
  • Check tire tread depth and condition

500-1000 Hours

  • Change transmission oil and filter
  • Change hydraulic oil filter
  • Change differential oils
  • Service wheel bearings
  • Check articulation bearings
  • Inspect radiator and coolers thoroughly
  • Check all hydraulic pressures
  • Inspect and test electrical system
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