Axle Repair
Precision Maintenance, Extended Component Life, and Safe, Reliable Operation
Monson Truck & Trailer Repair offers complete axle repair services for Class 7–8 semi-trucks, tractor-trailers, and heavy-duty equipment. From bearing and race maintenance to gear oil flushes, shaft replacements, and full differential rebuilds, our certified technicians diagnose and restore axle integrity—preventing costly failures and maximizing uptime.
The Importance of Healthy Axles
The Importance of Healthy Axles
Your truck’s axles support the vehicle’s weight, transmit torque to the wheels, and keep you safely on the road. Worn bearings, contaminated gear oil, or damaged shafts can lead to:
- Excessive Heat & Noise: Indicative of bearing or race wear.
- Reduced Load Capacity: Compromised shafts increase stress on surrounding components.
- Vibration & Steering Pull: Misaligned or bent axles cause uneven tire wear and handling issues.
- Catastrophic Failure: A seized bearing or broken shaft can strand you on the highway.
Monson’s Axle Repair service addresses these risks through proactive inspection, precise maintenance, and thorough rebuilds—keeping your fleet safe, compliant, and performing at its best.
How Our Axle Repair Process Works
How Our Axle Repair Process Works
Initial Inspection & Diagnosis
- Technician performs a thorough visual check: listen for hub noise, check for fluid leaks, and observe any play in the wheels.
- Road‐test under load to confirm unusual noises, vibration, or handling issues.
Shop Disassembly & Measurement
- Remove wheel, hub, and axle housing cover.
- Measure bearing and race condition with a micrometer; inspect gear oil for metal shavings or discoloration.
- Check shaft runout with a dial indicator to determine if straightening or replacement is necessary.
Component Service or Replacement
- Bearing / Race: Install new bearings and races with proper endplay.
- Gear Oil Flush: Connect to flush machine, cycle fresh oil through axle housing, then refill.
- Shaft / Spindle: Straighten shafts if within tolerance; otherwise, replace with OEM-equivalent parts.
- Differential: Rebuild carrier and pinion assembly—set shims, adjust backlash, and verify contact pattern.
Reassembly & Alignment
- Reinstall hubs, torque to factory specs, then mount wheels.
- Perform dynamic wheel alignment: adjust toe-in/out and thrust angle to OEM tolerances.
Final Road Test & Quality Check
- Road-test under various load conditions to ensure no noise, vibration, or leaks.
- Inspect for proper brake function and verify no abnormal heat build‐up in hubs or brakes.
Key Benefits of Professional Axle Repair
Key Benefits of Professional Axle Repair
Extended Component Life
Proper bearing and race maintenance prevents premature wear on hubs, seals, and brakes.
Improved Fuel Efficiency
Fresh, clean gear oil reduces friction and lowers parasitic drag in the drivetrain.
Enhanced Safety & Handling
Correct alignment and balanced components eliminate wobble, pulling, and potential steering issues.
Reduced Downtime & Costs
Timely service prevents catastrophic failures—saving thousands in towing, roadside fees, and lost revenue.
Emissions Compliance
Well-maintained axles and properly seated seals prevent lubricant leaks that can violate environmental regulations.
Why Choose Monson for Axle Repair
Why Choose Monson for Axle Repair
Certified, Heavy-Duty Technicians
Our team holds ASE and manufacturer-specific certifications, ensuring axle repairs meet factory tolerances.
State-of-the-Art Equipment
- Dynamic wheel aligner and spin balancer for precise calibration.
- Gear oil flush machine with integrated filtration to remove metal particulates down to 5 microns.
- Laser laser shaft runout measurement tools for accurate straightening protocols.
OEM-Quality Parts & Fluids
We source genuine bearings, races, seals, shafts, and ring & pinion sets from trusted OEM or OEM-equivalent suppliers.
Transparent, Fixed Pricing
- Bearing & Race Service (per axle): $450 (parts & labor)
- Gear Oil Flush: $275 (includes synthetic oil up to 12 quarts)
- Axle Shaft Replacement: Starting at $620 (varies by model)
- Differential Rebuild: Starting at $1,200 (parts & labor; price varies by gear set)
- Alignment & Balancing: $150 per axle
Fast Turnaround & Mobile Options
- Most axle services completed within 1–2 days.
- Mobile gear oil flush and alignment units available for fleet customers—minimize downtime by servicing on-site.
Our Driveline Repair Services
Bearing & Race Maintenance
- Inspection & Lubrication
- Remove hub assemblies to inspect bearings and races for pitting, scoring, or discoloration.
- Clean and pack bearings with high‐temperature wheel bearing grease; inspect races for damage.
- Bearing & Race Replacement
- When wear is detected, install OEM-grade bearings and races; preset bearing endplay to manufacturer specifications.
Gear Oil Flushes
- Contaminant Removal
- Gear oil accumulates metal particles, water, and debris that accelerate wear. Our flush machine circulates fresh oil through the housing to expel contaminants.
- Refill with Synthetic Gear Oil
- Refill with OEM-recommended synthetic gear oil to ensure proper film strength, temperature stability, and longevity.
Axle Shaft & Spindle Replacement
- Shaft Inspection & Straightening
- Measure shafts for runout and check for bending or spline wear. Minor bends can be straightened; severely damaged shafts are replaced.
- OEM or OEM-Equivalent Shaft Installation
- Install high-quality replacement shafts and spindles; torque to spec. Verify correct spline engagement and shaft length.
Differential Repair & Rebuild
- Seal & Bearing Replacement
- Remove differential cover; replace pinion and carrier bearings, seals, and shims.
- Gear Pattern Check & Backlash Adjustment
- Use dial indicators and marking compound to set proper backlash and gear mesh pattern; ensure quiet, efficient operation.
- Complete Rebuilds
- When gear damage is severe, install new ring & pinion sets and rebuild the carrier assembly per OEM specs.
Wheel Alignment & Balancing
- Digital Alignment Check
- Measure toe, camber, and thrust angle; correct misalignment to prevent uneven tire wear and steering pull.
- Hub/Drum Balancing
- If hubs or drums are out of balance, mount on a spin balancer to correct weight distribution and eliminate vibration.
Frequently Asked Questions
How often should I have my wheel bearings and races inspected?
We recommend inspection and repacking every 50,000 miles under normal highway use. Severe service (heavy loads, off-road, or dusty conditions) may require every 25,000 miles.
What are the signs of a bad axle shaft?
Look for vibration or “shimmy” at highway speeds, clunking when accelerating or decelerating, uneven tire wear, or visible bends or scoring on the shaft surface.
How do I know if my differential needs a full rebuild?
Common symptoms include whining or grinding noises from the rear, metal shavings in the gear oil, excessive backlash, or visible gear tooth damage. We perform a teardown and inspection to confirm.
Will a gear oil flush remove all contaminants?
Our flush machine circulates oil through the housing for 10–15 minutes, removing up to 95% of loose metal particles and sludge. Periodic flushes every 50,000 miles maintain optimal protection.
Can you realign axles on-site?
Yes. Our mobile alignment unit performs toe and thrust-angle adjustments for fleets, reducing the need to bring trucks into the shop.
Ready to Keep Your Axles in Top Condition?
Don’t wait for a seized bearing or bent shaft to sideline your truck. Monson’s certified technicians are equipped to inspect, repair, and rebuild—getting you back on the road safely and efficiently.