^a Ford design conventional axles use Rear Axle Lubricant XY-80W90-QL or -KL or equivalent meeting Ford specification WSP-M2C197-A.
^b Service refill capacities are determined by filling the axle with the specified lubricant to the bottom of the filler hole with the vehicle in running position.
^c Plus 8 oz. (U.S. measure) Additive Friction Modifier C8AZ-19B546-A or equivalent meeting Ford specification EST-M2C118-A for limited slip applications.
^d Rear axle lube quantities must be replaced every 160 000 km (100,000 miles) or if the axle has been submerged in water. Otherwise, the lube should not be checked or changed unless a leak is suspected or repair required.
^e 6.5 pints of lubricant is the fill specification when the axle is installed in the vehicle. If the axle is out of the vehicle, fill with 7.5 pints of specified lubricant.

Clearance, Tolerance And Adjustments (Integral Carrier)

Description	mm	Inches
Maximum Runout of Backface of Ring Gear	0.101	0.004
Maximum Runout of Backface of Differential Case Flange	0.076	0.003
Differential Side Gear Thrust Washer Thickness	0.76-0.81	0.030-0.032
Differential Pinion Gear Thrust Washer Thickness	0.76-0.81	0.030-0.032
Nominal Pinion Locating Shim	0.76	0.030
Available Pinion Gear Shims in Steps of 0.001 Inch	0.53-0.94	0.021-0.037
Backlash Between Ring Gear & Pinion Teeth	0.20-0.38 (0.30-0.38 Preferred)	0.008-0.015 (0.012-0.015 Preferred)
Maximum Backlash Variation Between Teeth	0.101	0.004
Maximum Radial Runout of Rear Axle Companion Flange in Assembly	0.304	0.012 T.I.R.
Sensor Pole to Top of Sensor Ring Gap	0.127-1.143	0.005-0.045
Maximum Axle Shaft End Play (Semi-Float Axles Only)	0.762	0.030

Axle Shaft End Play (Semi-Float Axles Only)

Axle shaft end play is allowable up to 0.762mm (0.030 inch), but can be as low as 0.127mm (0.005 inch). It is controlled by the u-washer (4N237) that holds the axle shaft (4234) in the pocket of the differential side gear (4236). To reduce clearance, replace differential side gears, Traction-Lok® clutch plates (if equipped), differential side gear thrust washers (4228) or axle shafts as required.

Torque Specifications (Integral Carrier)

Description	Nm	Lb-Ft
Differential Bearing Cap Bolt	109-129	80-95
Differential Pinion Shaft Lock Pin Using Threadlock® and Sealer EOAZ-19554-AA or Equivalent Meeting Ford Specification WSK-M2G315-A5 (Type II)	20-40	15-30
Ring Gear Attaching Bolts Using Threadlock® and Sealer EOAZ-19554-AA or Equivalent Meeting Ford Specification WSK-M2G315-A5 (Type II)	136-163	100-120
Rear Cover Bolt	38-52	28-38
Ratio Tag Hold-Down Bolt	24-38	18-28
Oil Filler Plug	20-40	15-30
Brake Backing Plate Nuts — F-250	68-115	50-85
Driveshaft to Rear Axle Universal Joint Flange	11-20	8-15
Axle Vent	20	15
Wheel Lug Nut — Five Lug	100-180	74-133
Wheel Lug Nut — Eight Lug	170-230	126-170
Rear Anti-Lock Sensor Bolt	34-40	25-30

Adjustment Torque Specifications (Integral Carrier)

Description	Rotational Torque a
	Nm	Lb-In
Pinion Bearing Preload — Collapsible Spacer — Used Bearings — New Bearings	0.9-1.5 1.8-3.3	8-14 16-29