Auto Repair 1998 Ford F 150/250 Differential Case and Ring Gear Disassembly And Assembly
Disassembly 1 . Remove the differential case ( 4204 ) ; refer to Differential Case in this section . 2 . NOTE: The differential bearings ( 4221 ) need not be removed to overhaul the Ford limited slip differential . If the removal of bearings needed, use 2 - Jaw Puller for Differential Case Bearing . NOTE: The anti -lock speed sensor ring can not be reused once removed . Remove differential pinion shaft lock bolt and remove the differential pinion shaft ( 4211 ) . If necessary , remove the ring gear and the anti -lock speed sensor ring . 3 . Install Traction - Lok ® Torque Tool in the appropriate visa . 4 . Install differential case in the tool . 5 . Step Plate Adapter installed on the bottom side gear bore . Apply a small amount of oil into the centering hole Step Plate Adapter . 6 . Put the nut on the differential side gear up ( 4236 ) . Hold the nut in position when installing the hex screws . Tighten the screws hex - head to the contact made with Step Plate Adapter .
7 . Insert the dowel bar that fits in the hole of the nut. Tighten the screws to force to force the differential side gear away from pinion differential ( 4215 ) . The dowel bars are used to keep the nut from turning when the forcing screw is tightened . 8 . WARNING : Keep fingers / hands of pinion gears when rotating differential case with the differential rotating tool . NOTE : Differential pinion thrust washer ( 4230 ) can not be removed independently of the differential pinion gears and so should be removed along with the differential pinion gears . Enter Rotating Equipment Limited Slip Differential pinion shaft in the hole , and changing the differential case to " walk " differential pinion gears and differential pinion thrust washers out to the differential case window . 9 . Remove the differential pinion gears and differential pinion thrust washers . 10 . Remove the differential side gears and differential clutch pack ( 4947 ) , and tag them RIGHT and LEFT with the shim . 11 . CAUTION : When separating the clutch plates and clutch discs , note the order in which they were dismantled . They must be reassembled in the same order . CAUTION : Do not use acids or solvents when cleaning the differential clutch pack . Wipe components with a clean , cloth - just free . Separate the differential clutch discs and clutch plates for cleaning and inspection . View disassembled view of the case limited slip differential in the Description and Operation section of this section . Assembly 1 . Prelubricate each steel clutch plate and soak all friction plates with 118 ml ( 4 oz ) Additive Friction Modifier C8AZ - 19B546 - A or equivalent meeting Ford specification EST - M2C118 - A for at least 15 minutes .
7 . Insert the dowel bar that fits in the hole of the nut. Tighten the screws to force to force the differential side gear away from pinion differential ( 4215 ) . The dowel bars are used to keep the nut from turning when the forcing screw is tightened . 8 . WARNING : Keep fingers / hands of pinion gears when rotating differential case with the differential rotating tool . NOTE : Differential pinion thrust washer ( 4230 ) can not be removed independently of the differential pinion gears and so should be removed along with the differential pinion gears . Enter Rotating Equipment Limited Slip Differential pinion shaft in the hole , and changing the differential case to " walk " differential pinion gears and differential pinion thrust washers out to the differential case window . 9 . Remove the differential pinion gears and differential pinion thrust washers . 10 . Remove the differential side gears and differential clutch pack ( 4947 ) , and tag them RIGHT and LEFT with the shim . 11 . CAUTION : When separating the clutch plates and clutch discs , note the order in which they were dismantled . They must be reassembled in the same order . CAUTION : Do not use acids or solvents when cleaning the differential clutch pack . Wipe components with a clean , cloth - just free . Separate the differential clutch discs and clutch plates for cleaning and inspection . View disassembled view of the case limited slip differential in the Description and Operation section of this section . Assembly 1 . Prelubricate each steel clutch plate and soak all friction plates with 118 ml ( 4 oz ) Additive Friction Modifier C8AZ - 19B546 - A or equivalent meeting Ford specification EST - M2C118 - A for at least 15 minutes .
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