General Specifications

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GENERAL SPECIFICATIONS

Item

Specification

Lubricants and Sealants

Additive Friction Modifier C8AZ-19B546-A

EST-M2C118-A

SAE 75W-140 High Performance Rear Axle Lubricant XY-75W140-QL (vehicles with the trailer towing option or 4:10 ratio)

WSL-M2C192-A

SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL (Model 60/70 axles)

WSP-M2C197-A

Premium Long-Life Grease XG-l-C

ESA-M1C75-B

Ultra Silicone Sealant F7TZ-19554-AA

Threadlock and Sealer E0AZ-19554-AA

WSK-M2G351-A5

Hypoid Gear Oil C6AZ-19580-E (Model 60)

ESW-M2C105-A

Lubricant Fill Level Checks

60-lU⁽¹⁾

3.0 L (6.3 pints)⁽¹⁾

70-2U⁽²⁾

3.1 L (6.6 pints)⁽³⁾

70HD⁽²⁾

3.5 L (7.4 pints)⁽³⁾

Backlash Specifications

Backlash between differential ring gear and pinion

0.13-0.20 mm (0.005-0.008 in)

Backlash maximum variation between checkpoints

0.05 mm (0.002 in)

Rotational Torque Ranges

Pinion bearing preload (with new bearings)

2.26-5.09 Nm (20-45 lb-in)

Total (pinion plus differential) preload with new bearings

For Model 60 or Model 70 with 3.54 and 3.73 axle ratios, add 0.9 Nm (8 lb-in). For Model 60 or Model 70 with 4.10 and 4.56 axle ratios or Model 70TR with 4.63 and 5.13 axle ratios, add 0.8 Nm (7 lb-in).

Clearance Specifications

Maximum spread of differential housing

0.38 mm (0.015 in)

⁽¹⁾	For a complete refill on Model 60 axles equipped with a limited-slip differential, add 0.2 liters (8 ounces) of Additive Friction Modifier C8AZ-19B546-A meeting Ford specification EST-M2C118-A.

⁽²⁾

For 4.10:1 axles and axles subject to frequent trailer towing, particularly in a hot or hilly area, use SAE 75W-140 High Performance Rear Axle Lubricant XY-75W140-QL meeting Ford specification WSL-M2C192-A. For all other applications, use SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL meeting Ford specification WSP-M2C197-A.

⁽³⁾	For a complete refill on Model 70 axles equipped with a limited-slip differential, add 0.163 L (5.5 ounces) of Additive Friction Modifier C8AZ-19B546-A meeting Ford specification EST-M2C118-A.