Caterpillar 226 Axle Removal Procedure

[MikePhua]

Introduction and Importance
Removing the axle on a Caterpillar 226 skid steer loader is a crucial maintenance step for inspection, repair, or replacement of drive components such as bearings, seals, or the axle shaft itself. Proper removal ensures the longevity of the loader’s drivetrain and prevents further mechanical failures.
Preparation and Safety

• Engage the parking brake and lower all attachments to the ground to secure the machine.
  
• Disconnect the battery to avoid accidental startup during disassembly.
  
• Clean the working area around the axle housing to prevent debris contamination.
  

Tools and Equipment Needed

• Socket wrench set including deep sockets compatible with chain gear bolts
  
• Puller tool or appropriate prying tools for axle shaft removal
  
• Torque wrench for reinstallation
  
• Lubricants and sealants for post-removal assembly
  

Step-by-Step Axle Removal

• Remove bolts securing the axle housing; some bolts may be obstructed by other components, necessitating partial disassembly of surrounding parts.
  
• Pry off or pull the axle shaft gently from the housing, taking care not to damage the sprocket or sealing surfaces.
  
• If the axle is connected to a sprocket in the chain case, remove the retaining nut or bolt securing the sprocket before sliding out the axle assembly as one unit.
  
• Carefully inspect the axle shaft for wear, cracks, or bending that could impair function.
  
• Examine bearings and seals within the axle housing; replace as necessary to maintain proper lubrication and avoid leaks.
  
• Clean mating surfaces on the axle housing and frame to prepare for reinstallation.
  

Chain Tension Adjustment

• During reinstallation, adjust chain tension by sliding axle housings accordingly before tightening bolts.
  
• Manufacturer guidelines typically specify approximately half an inch of axial play in the chain to prevent over-tensioning or excessive slack.
  
• Use a hydraulic jack or wedge to separate axle housings if necessary for tensioning.
  

Reinstallation Recommendations

• Apply lubricants and anti-seize compounds on bolt threads and mating surfaces for easier future service.
  
• Torque all fasteners to manufacturer specifications to ensure structural integrity and safety.
  
• Double-check chain tension, axle alignment, and seal seating before returning the machine to operational status.
  

Terminology Explained

• Axle Housing: Structural component encasing the axle shaft and bearings.
  
• Sprocket: Toothed wheel engaging with chain for power transmission to wheels.
  
• Bearing: Mechanical component permitting smooth shaft rotation under load.
  
• Seal: Component preventing lubricant leakage and intrusion of contaminants.
  
• Chain Tension: The proper tightness of the drive chain to avoid slippage or excessive wear.
  

Conclusion
Axle removal on a Caterpillar 226 skid steer loader is a precise process requiring attention to detail to preserve the drivetrain’s functionality. Following safe work practices, using the right tools, and adhering to manufacturer specifications for chain tension and torque ensure a successful axle service, extending machine life and maintaining performance. Regular axle inspections during scheduled maintenance catch wear early, preventing costly repairs and downtime.