2003 ford f150 4x4 how to replace pinion bearing
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Filed Under (Dodge) by admin on 07-05-2011
GEAR NOISE Axle gear noise can be caused by insufficient lubricant, incorrect backlash, incorrect pinion depth, tooth contact, worn/damaged gears, or the carrier housing not having the proper offset and squareness. Gear noise usually happens at a specific speed range. The noise can also occur during a specific type of driving condition. These conditions are acceleration, deceleration, coast, or constant load. When road testing, first warm-up the axle fluid by driving the vehicle at least 5 miles and then accelerate the vehicle to the speed range where the noise is the greatest. Shift out-of-gear and coast through the peak-noise range. If the noise stops or changes greatly: Check for insufficient lubricant. Incorrect ring gear backlash. Gear damage. Differential side gears and pinions can be checked by turning the vehicle. They usually do not cause noise during straight-ahead driving when the gears are unloaded. The side gears are loaded during vehicle turns. A worn pinion shaft can also cause a snapping or a knocking noise. BEARING NOISE The axle shaft, differential and pinion bearings can all produce noise when worn or damaged. Bearing noise can be either a whining, or a growling sound. Pinion bearings have a constant-pitch noise. This noise changes only with vehicle speed. Pinion bearing noise will be higher pitched because it rotates at a faster rate. Drive the vehicle and load the differential. If bearing noise occurs, the rear pinion bearing is the source of the noise. If the bearing noise is heard during a coast, the front pinion bearing is the source. Worn or damaged differential bearings usually produce a low pitch noise. Differential bearing noise is similar to pinion bearing noise. The pitch of differential bearing noise is also constant and varies only with vehicle speed. Axle shaft bearings produce noise and vibration when worn or damaged. The noise generally changes when the bearings are loaded. Road test the vehicle. Turn the vehicle sharply to the left and to the right. This will load the bearings and change the noise level. Where axle bearing damage is slight, the noise is usually not noticeable at speeds above 30 mph. LOW SPEED KNOCK Low speed knock is generally caused by a worn U-joint or by worn side-gear thrust washers. A worn pinion shaft bore will also cause low speed knock. VIBRATION Vibration at the rear of the vehicle is usually caused by a: Damaged drive shaft. Missing drive shaft balance weight(s). Worn or out-of-balance wheels. Loose wheel lug nuts. Worn U-joint(s). Loose/broken springs. Damaged axle shaft bearing(s). Loose pinion gear nut. Excessive pinion yoke run out. Bent axle shaft(s). Check for loose or damaged front-end components or engine/transmission mounts. These components can contribute to what appears to be a rear end vibration. Do not overlook engine accessories, brackets and drive belts. All driveline components should be examined before starting any repair. DRIVELINE SNAP A snap or clunk noise when the vehicle is shifted into gear (or the clutch engaged), can be caused by: High engine idle speed. Transmission shift operation. Loose engine/transmission/transfer case mounts. Worn U-joints. Loose spring mounts. Loose pinion gear nut and yoke. Excessive ring gear backlash. Excessive side gear to case clearance. The source of a snap or a clunk noise can be determined with the assistance of a helper. Raise the vehicle on a hoist with the wheels free to rotate. Instruct the helper to shift the transmission into gear. Listen for the noise, a mechanics stethoscope is helpful in isolating the source of a noise.
Removal Procedure 1. 2. 3. 4. 5. 6. Raise the vehicle. Remove the tire and wheel assemblies. Remove the brake drums Remove the axle shafts. Remove the differential. Remove the drive pinion from the axle. 7. Press the bearing off of the pinion using theJ 22912-B . 8. Remove the shim. 9. Remove the drive pinion bearing cups from the axle housing using a hammer and a brass drift in the slots provided. Move the drift back and forth between one side of the cup and the other in order to work the cups out of the housing evenly. Installation Procedure 1. Install the outer pinion bearing cup using the J 8611-01 (8.6 inch axle) (2), or the J 7818 (9.5 inch axle) (2) and the J 8092 (1). 2. Install the inner pinion bearing cup using the J 8608 (8.6 inch axle) (2), or the J 22306 (9.5 inch axle) (2) and the J 8092 (1). 3. Determine the selective shim thickness for the pinion. 4. Install the selective shim between the inner pinion bearing and the shoulder on the gear. 5. Install the inner pinion bearing using the J 24433 (8.6 inch axle) or the J 36614 (9.5 inch axle). Press the bearing on until the cone seats on the pinion shim. 6. Install a new collapsible spacer. 7. Install the pinion into the axle housing. 8. Install the outer pinion bearing onto the pinion. 9. Install a new pinion oil seal and the pinion yoke. 10. Install the differential. 11. Install the brake drums. 12. Install the tire and wheel assemblies. 13. Fill the axle with lubricant. Use the proper fluid. 14. Lower the vehicle.
Filed Under (Ford) by admin on 23-02-2011
Removal CAUTION: The color on the rear face of the drive pinion nut is critical to this repair. Use the same color new drive pinion nut for installation. If a new collapsible spacer must be installed for pinion bearing preload reduction, install the nut supplied with the new spacer or damage to the component may occur. 1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Section 100-02. 2. Remove the brake disc. For additional information, refer to Section 206-04. 3. Index-mark the driveshaft flange and pinion flange for correct alignment during installation. 4. Remove the 4 driveshaft flange bolts. 5. NOTE: The driveshaft centering socket yoke fits tightly on the pinion flange pilot. Never hammer on the driveshaft or any of its components to disconnect the driveshaft centering socket yoke from the pinion flange. Pry only in the area shown with a suitable tool to disconnect the driveshaft centering socket yoke from the pinion flange. Using a suitable tool as shown, disconnect the driveshaft centering socket yoke from the pinion flange. ? Using mechanic’s wire, position the driveshaft aside. 6. Using a Nm (lb-in) torque wrench on the pinion nut, record the torque required to maintain rotation of the pinion gear through several revolutions. 7. Using the special tool to hold the pinion flange, remove and discard the pinion nut. 8. Index-mark the pinion flange in relation to the drive pinion stem to make sure of correct alignment during installation. 9. Using the special tool, remove the pinion flange. 10. Force up on the metal flange of the drive pinion seal. Install gripping pliers and strike with a hammer until the drive pinion seal is removed. Installation 1. Lubricate the new drive pinion seal with grease. 2. Using the special tool, install a new drive pinion seal. 3. Lubricate the pinion flange splines with axle lubricant. 4. NOTE: Disregard the scribe marks if a new pinion flange is being installed.
Filed Under (Ford, Lincoln) by admin on 17-10-2009
The instructions below can be used for the following vehicles: 2008 Ford Crown Victoria / Lincoln Town Car / Mercury Grand Marquis 2008 Ford E-series 2007-2009 Ford Edge / Lincoln MKX 2005-2008 Ford Escape / Mercury Mariner 2007-2009 Ford Expedition / Lincoln Navigator 2006-2009 Ford Explorer / Lincoln Aviator / Mercury Mountaineer 2007-2008 Ford F150, F250, and F350 / Lincoln Mark LT
2009 Ford Flex 2008-2009 Ford Focus 2006-2007 Ford Freestar / Mercury Monterey 2008-2009 Ford Fusion / Lincoln MKZ / Mercury Milan 2007-2009 Ford Mustang 2007-2009 Ford Ranger 2008-2009 Ford Taurus / Mercury Sable
1. Make sure all tires are inflated to the vehicle’s recommended inflation pressures (found in the owner’s manual on the door placard). 2. Turn the ignition switch to OFF then press and release the brake pedal. 3. Turn the ignition switch from OFF to RUN (engine OFF) 3 times, ending in the RUN position. Do this within 10 seconds. 4. Press and release the brake pedal
Filed Under (Ford) by admin on 11-05-2010
Some 1999-2004 Navigator, 2002-2003 Blackwood, 2003-2005 Aviator, 2003-2004 Marauder and 2003-2004 Mustang vehicles built before 12/19/2004 equipped with 4.6L 4V/5.4 4V engine may exhibit a runs rough, lacks power, and engine misfire, prompted by a MIL light and DTC codes P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, and P0316. ACTION Diagnose engine for engine misfire concern. If diagnostics determine an engine misfire which is characterized by leakage through exhaust valve(s), only replace the affected cylinder head(s). SERVICE PROCEDURE