Eaton Spicer Meritor Truck Differentials

✅ Advantages of Our OEM Brand Differentiators

• Market-Leading Brands: Stock from Eaton, Spicer (Dana) and Meritor (Rockwell), the same manufacturers that equip dealership (OEM) trucks
• Hypoid Precision: Gears machined to exact tolerances for smooth torque transfer, drastically reducing friction and heat
• Extreme Resistance: Manufactured from forged steel alloys and heat treated to prevent tooth chipping during heavy starts or engine braking
• Proven Reliability: Components designed to work in perfect harmony with premium lubricants, maximizing maintenance intervals
• Perfect Fit: Elimination of noise and vibration thanks to OEM precision geometry

🚛 Ideal Applications

• Cargo Tractors: Total reliability for long-distance routes and mountain crossings
• Dump Trucks and Machinery: Superior resistance to torsional stress on unpaved terrain
• Logistics Fleets: Reduction of downtime due to rear axle failures
• Heavy Duty Operations: Maximum torque capacity for extreme loads

📦 Various Presentations and Different Prices

Due to the wide variety of gear ratios and specific configurations, we offer different models and price points. Contact our store directly so an expert can identify the exact differential for your axle and provide you with the best price.

📋 Technical Specifications

• Product: Differential Assembly (Crown and Pinion)
• Available Brands: Eaton, Spicer (Dana), Meritor (Rockwell)
• Steel Grade: High-density forged steel alloy (Industrial Grade)
• Treatment: Cemented and hardened for maximum service life
• Compatibility: Heavy Duty axles
• Key Benefit: Perfect fit and elimination of noise/vibration

Proper Storage:

• Store in a dry place, protected from moisture.
• Keep in its original packaging until the time of installation
• Avoid direct contact with the floor; use pallets or shelves.
• Protect from corrosion by applying protective oil if stored for extended periods.
• Do not store in contact with corrosive chemicals
• Keep away from areas with high humidity

Safe Handling:

• Differential assemblies are extremely heavy; use appropriate lifting equipment
• Never attempt to lift manually without mechanical assistance.
• Use slings and workshop cranes to move differentials
• Handle with extreme care to avoid impacts that could damage the teeth
• Wear work gloves when handling
• Protect gear teeth from bumps and scratches

Critical Surface Protection:

• Gear teeth must be kept free of scratches and dents
• Do not use your teeth as gripping points
• Protect machined surfaces with clean paper or cloth
• Keep threads and mounting surfaces clean and protected

Before Installation:

• Inspect the differential for shipping damage
• Verify that the part number and gear ratio match exactly
• Inspect the teeth for damage or defects
• Make sure you have all the necessary components for installation
• Verify that the axle housing is in optimal condition.

⚠️ Warning: Differentials are extremely heavy and critical components. Always use appropriate lifting equipment and follow safety procedures. Improper installation can cause catastrophic failure.

Compatible Axles:

• Eaton: DS, DSP, DT Series (high torque differentials)
• Meritor (Rockwell): RT, RS, RD, RZ Series (heavy duty differentials)
• Dana/Spicer: D, S Series (drive and trailer axles)

Common Gear Ratios:

• 3.42:1 - For long distance and maximum fuel economy
• 3.73:1 - Balance between economy and performance
• 4.10:1 - For mountainous terrain and heavy loads
• 4.30:1 - Maximum traction for severe service
• Always verify the correct ratio for your application.

Applications by Operation Type:

• Long-distance transport on highways
• Operations in mountainous terrain
• Severe service construction and mining
• Dump trucks and heavy equipment
• Mixed fleets with different load configurations

Differential Components:

• Ring Gear: The main gear that receives the power
• Pinion Gear: Driving gear connected to the shaft
• Satellites (Spider Gears): Allow for speed differences between wheels
• Satellite Case (Carrier): Houses the differential gears

🔧 Installation and Maintenance Recommendations

Installing an Eaton, Spicer, or Meritor differential isn't an expense; it's protecting your investment. By choosing these brands, you prevent premature axle wear and ensure that every horsepower reaches the wheels efficiently.

For optimal performance:

• Check the bearing adjustment during installation
• Use high viscosity oil to protect the gear teeth
• Follow the maintenance intervals recommended by the manufacturer

Signs You Need to Replace Your Differential:

• Groaning or howling noises from the rear axle
• Vibrations during acceleration
• Differential oil leaks
• Worn or chipped gear teeth
• Excessive play in the differential
• Rear axle overheating

Installation Procedure (Summary):

• This is a repair that requires specialized professional expertise.
• It requires specialized tools and precision measuring equipment
• Drain the differential oil completely
• Remove the axle and disassemble the differential housing
• Remove the old crown and pinion assembly
• Inspect the crankcase for cracks or damage
• Install the new assembly following exact specifications
• Adjust the backlash (play between teeth) according to specifications
• Adjust the bearing preload
• Check the contact pattern of the teeth
• Assemble the differential with new screws
• Fill with high-quality gear oil
• Test drive it on the road and check for noises or vibrations

Critical Adjustments:

• Backlash: Typically 0.005" - 0.008" (0.13-0.20mm)
• Bearing Preload: According to manufacturer specifications
• Contact Pattern: Should be centered on the teeth
• Screw Torque: Follow exact specifications

Preventive Maintenance:

• Change the differential oil according to recommended intervals
• Inspect for leaks regularly
• Check the oil level monthly
• Listen for abnormal noises during operation
• Inspect the magnetic plug for metallic particles
• Use only oil that meets API GL-5 specifications

Oil Change Intervals:

• Severe service: 80,000 - 160,000 km
• Normal service: 160,000 - 320,000 km
• Always consult the manufacturer's manual
• Change the oil if it shows contamination or a change in color.

Pro Tips:

• This repair requires specialized professional expertise.
• Use only calibrated measuring tools
• Document all measurements and adjustments
• Follow the manufacturer's service manual to the letter
• Use new screws for assembly
• Verify the contact pattern with the marker compound
• Keep all repair records