Motor Grader Monthly Inspection – Procedure

Use this monthly checklist to verify the condition and safety of all grader components and ensure continued reliability on site.

Detailed Inspection Procedures

Follow these structured procedures to ensure a thorough inspection of your motor grader. Adapt these steps to your specific machine model and operating conditions.

Circle and Moldboard Inspection

  • Position blade on flat surface for proper inspection
  • Measure cutting edge wear (replace if worn to 1" or less)
  • Check all cutting edge and end bit bolts for tightness
  • Inspect moldboard for cracks or bending
  • Rotate circle and check for smooth operation
  • Measure circle tooth engagement (minimum 60%)
  • Check circle guide shoes adjustment (0.020" - 0.040" gap)
  • Inspect circle drive gear for worn or damaged teeth
  • Check pinion gear backlash (should be minimal)
  • Verify all grease points have been lubricated
  • Test all blade movements for smooth operation

Articulation Joint Assessment

  • Clean articulation area thoroughly
  • Check upper and lower bearing condition
  • Inspect articulation cylinders for leaks or damage
  • Check articulation cylinder pins and bushings
  • Measure articulation joint play (should be minimal)
  • Verify articulation stops are intact and secure
  • Inspect frame for cracks around articulation joint
  • Check all bolts for proper torque
  • Test articulation through full range of motion
  • Listen for unusual noises during articulation
  • Apply fresh grease to all fittings after inspection

Tandem Drive Inspection

  • Check tandem housing for cracks or damage
  • Verify oil level in tandem housings
  • Inspect oil for metal particles or contamination
  • Check chain tension (1/4" - 1/2" deflection)
  • Look for oil leaks around seals and bearings
  • Inspect walking beam bearings for play
  • Check axle bearing condition and wear
  • Verify all mounting bolts are tight
  • Inspect chain case cover gaskets for leakage
  • Check chain sprocket condition and alignment
  • Verify all grease points have been lubricated

Hydraulic System Evaluation

  • Check hydraulic oil level when system is cool
  • Inspect oil condition and color in sight glass
  • Test for drift by extending cylinders fully
  • Look for leaks around all hydraulic connections
  • Check hydraulic pumps for unusual noise
  • Inspect hydraulic hoses for rubbing or chafing
  • Verify hydraulic filter indicators
  • Test cycle times for all hydraulic functions
  • Check hydraulic pressures if possible
  • Inspect hydraulic tank breather for restrictions
  • Look for external damage to hydraulic components

Maintenance Guidelines

These guidelines outline recommended maintenance tasks to complement your monthly inspections. Following these schedules helps prevent equipment failures and extends the service life of your motor grader.

250 Hour / Monthly Service

  • Change engine oil and filter
  • Clean or replace fuel filters
  • Check coolant condition and inhibitor level
  • Clean radiator fins and oil cooler
  • Check all fluid levels and top up as needed
  • Lubricate all grease points
  • Check battery electrolyte level
  • Inspect and clean air filter elements
  • Adjust blade lift and side-shift linkage
  • Check circle drive gear backlash
  • Check chain tension in tandem drive

500 Hour Service

  • Change transmission filter
  • Change hydraulic filters
  • Check air conditioner operation
  • Check alternator and starter connections
  • Inspect articulation pins and bearings
  • Inspect circle drive components
  • Adjust circle guide shoes
  • Check wheel lean components
  • Test all safety equipment
  • Check all engine mounts
  • Inspect wheel bearings

1000 Hour Service

  • Change transmission oil
  • Change differential oil
  • Change tandem case oil
  • Check valve adjustment
  • Pressure test cooling system
  • Test hydraulic system pressures
  • Clean engine crankcase breather
  • Check engine compression
  • Clean and test fuel injectors
  • Inspect brake system thoroughly
  • Check turbocharger clearances

2000 Hour Service

  • Change hydraulic system oil
  • Change engine coolant
  • Check front wheel bearing adjustment
  • Inspect all structural welds
  • Inspect frame for cracks
  • Rebuild or replace hydraulic cylinders as needed
  • Check planetary drives
  • Inspect all hoses and replace as needed
  • Test all electronic control systems
  • Full machine condition assessment
  • Develop/update long-term maintenance plan
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