Front Axle Specifications

Specifications

General Specifications
Item	Specification
Lubricants and Sealants
SAE 90 Premium Rear Axle Lubricant C2AZ-19580-F SAE 80W-90 (Approved by Ford Engineering for use in all passenger cars and light duty trucks which originally specified SAE 90) See: Motorcraft Chemicals and Lubricants Catalog.	ESW-M2C105-A
High Temperature 4x4 Front Axle and Wheel Bearing Grease E8TZ-19590-A	ESA-M1C198-A
Clear Silicone Rubber D6AZ-19562-AA	ESB-M4G92-A or ESE-M4G195-A

Lubricant Fill Level Checks
Item	Specification
Axle lubricant	2.8 liters (5.9 pints)

Backlash Specifications
Item	Specification
Backlash between ring gear and pinion	0.13-0.20 mm (0.005-0.008 in)
Maximum ring gear backlash variation	0.05 mm (0.002 in)

Rotational Torque Ranges
Item	Specification
Pinion bearing preload ^a ^b ^c ^d	1.7-3.4 Nm (15-30 lb-in)

^a Never back off the pinion nut to reduce preload. If preload reduction is necessary, install a new collapsible spacer and pinion nut.
^b Take frequent pinion bearing torque preload readings.
^c For new pinion bearing installation, tighten the pinion nut to a rotating torque of 1.7-3.4 Nm (15-30 lb-in) (217-678 Nm [160-500 lb-ft]).
^d For original pinion bearing installation, the reading must be 0.56 Nm (5 lb-in) more than the initial reading taken during the disassembly procedure.

Torque Specifications
Description	Nm	lb-ft
Pinion nut ^a ^b ^c ^d	217-678	160-500
Bolt retaining the front driveshaft to the front axle flange	35	26
Nut retaining the u-bolt to the axle	133	99
Nut and bolt retaining the trackbar to the axle	174	129
Bolt retaining the stabilizer bar bracket to the axle	47	35
Bolt retaining the differential bearing cap to the differential housing	109	80
Bolt retaining the differential housing cover to the differential housing	47	35
Bolt retaining the ring gear to the differential case (model 50)	136	100
Bolt retaining the ring gear to the differential case (model 60)	183	135
Fill plug	27	20

^a Never back off the pinion nut to reduce preload. If preload reduction is necessary, install a new collapsible spacer and pinion nut.
^b Take frequent pinion bearing torque preload readings.
^c For new pinion bearing installation on model 50 and 60 axles, tighten the pinion nut to a rotating torque of 1.7-3.4 Nm (15-30 lb-in) (217-678 Nm [160-500 lb-ft]).
^d For original pinion bearing installation, the reading must be 0.56 Nm (5 lb-in) more than the initial reading taken during the disassembly procedure.

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