Mechanics

F350 REAREND

1999 Ford F-350

Drive Train Axles Bearings problem
1999 Ford F350 Four Wheel Drive Automatic 243000 miles

Changed ujoints and rear seal, now have vibration at slow speed. Is there a torgue spec or just tighten it?
Avatar
Mstammygaul
April 29, 2010.




Did you index the driveshaft before you removed it? put it back in with your index marks? This sounds like you didn't...Removal & Disassembly 1. Raise and support vehicle. Mark drive shaft and differential companion flange or yoke for reassembly reference. Remove drive shaft from vehicle. Scribe alignment marks on yoke and shaft for reassembly reference. If joints are rusted or corroded, apply penetrating oil before pressing out bearing races or trunnion pin. Disconnect yoke or flange bolts. 2. Remove retaining strap (if equipped). Remove all snap rings from yoke. Press out rollers and bearings. Remove last roller and bushing assembly by pressing on end of cross. Remove cross from yoke. DO NOT remove seal retainers from cross. Cross and retainers are serviced as an assembly. Reassembly & Installation 1. Coat roller and bearing assemblies with lubricant, and fill reservoirs in ends of cross. Install cross into drive shaft yoke. Install roller and bushing assemblies into position. 2. Press both bushing assemblies into yoke until retainers can be installed, keeping cross aligned in center of bushings. Install snap rings. Repeat procedure for remaining bushings. Install strap (if equipped). Install drive shaft into vehicle, aligning scribe marks. DOUBLE CARDAN UNIVERSAL JOINTS Removal & Disassembly 1. Mark drive shaft and differential companion flange or yoke for reassembly reference. Remove drive shaft from vehicle. If joints are rusted or corroded, apply penetrating oil before pressing out bearing races or cross. 2. Place drive shaft assembly onto workbench. Mark position of cross, center yoke and centering socket yoke in relation to drive shaft tube. See Fig. 11 . Cross must be installed with bosses in original position to provide proper clearance. 3. Remove snap rings. Using "U" Joint Remover/Installer (T745P-4635-C), press cross until NOTE: DO NOT use pry bar to hold drive shaft while loosening bolts, since damage to bearing seals may result. WARNING: On vehicles with electronic air suspension, suspension system must be disabled prior to hoisting or jacking. See DISABLING ELECTRONIC AIR SUSPENSION under MAINTENANCE. NOTE: When handling drive shaft after removal, support shafts on both sides when moved horizontally. DO NOT allow shaft to hang freely or bend at sharp angle. NOTE: To obtain correct clearance, cross must be installed onto bosses in original positions. bearing protrudes 3/8" (10 mm). Clamp protruding part of bearing in vise. Tap center yoke with hammer until bearing is free of yoke. 4. Using this method, remove all bearings from cross. Remove cross from center yoke. Remove centering socket yoke and seal from centering ball stud. Remove snap rings from center yoke and drive shaft yokes. 5. Install "U" Joint Remover/Installer. Press bearing outward until inside of center yoke almost contacts slinger ring. Clamp exposed end of bearing in vise. Tap center yoke with soft mallet until bearing is free. Press cross to remove remaining bearing. Remove center yoke from cross. Clean all serviceable parts in solvent. NOTE: Centering ball is located inside center yoke socket. If centering ball replacement is required, replace center yoke socket. Reassembly 1. Install cross into drive shaft yoke. Ensure cross bosses (or lubrication plugs in kits) are installed in original position. Using "U" Joint Remover and Installer, press in bearings. Install snap rings. Fill center socket and coat centering ball with grease. 2. Position center yoke over cross. Press in bearings. Install snap rings. Install NEW seal onto centering ball stud. Install centering socket over stud. Install front cross into yoke. Ensure cross bosses (or lubrication plugs) are installed in original position. 3. Position cross loosely onto center stop. Press first set of bearings into center yoke, then install second set. Install snap rings. Apply pressure to center yoke socket and install remaining bearing cup. If replacement kit is used, remove plugs, lubricate "U" joints, and reinstall plugs. Installation (1-Piece Shaft Front) 1. Clean yoke. Inspect machined surface for scratches, nicks, or burrs. Check for arrows on slip joint and drive shaft to aid in alignment. 2. Connect single end of drive shaft to front axle. Install "U" bolts and tighten nuts. Connect double Cardan joint end to transfer case. Install "U" bolts. Installation (1-Piece Shaft Rear) 1. Clean yoke. Inspect machined surface for scratches, nicks, or burrs. Check for arrows on slip joint and drive shaft to aid in alignment. Lubricate yoke splines and install into transmission output shaft. 2. Connect drive shaft to rear companion flange. Tighten bolts to specification. See TORQUE SPECIFICATIONS . Installation (2-Piece & 3-Piece Shafts) 1. Rotate transmission until yoke ears are on a horizontal plane. Clean yoke. Inspect machined surface for scratches, nicks or burrs. Lubricate splines. 2. Provide support for drive shaft during installation to prevent damage to universal joints. Align marks noted during removal. Connect front joint coupling shaft to transmission yoke. Tighten bolts to specification. See TORQUE SPECIFICATIONS . 3. Ensure center bearing does not twist in support plate. Connect front and rear coupling shaft (if equipped). Attach universal joint to rear axle flange. Tighten nuts to specification. NOTE: Install drive shaft assembly so yoke ears at each end of shaft are on same plane.
4/29/2010 ...


http://www.2carpros.com/forum/automotive_pictures/62217_Double_Cardan_U_Joint_1.jpg


Merlin2021
Apr 29, 2010.


AD