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Re: Front wheel stud broke off
Knuckle needs to be removed and the center hub 'pressed out' using a hydraulic press (accepted procedure). You can avoid this by using an air hammer and disk cutting tool to remove the old stud, then trim the 'stop flange' on the new stud (1/4 moon cut) in order to install it.... however, you gotta know what you're doing so you don't compromise the integrity of the new stud.
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The studs are in the hub behind the rotor and it has to be removed because the studs have to be driven out with a hammer (and punch when broken) and driven back in. When you buy the new studs, you'll see what I mean.
I'll try to help you. If you are having trouble with 3 out of 5 studs on one wheel you may want to go to an autoparts store or Salvage yard to look at the whole hub. Usually a press is used to remove the bolts so you would be taking off the hub anyway. When you pay for 3 bolts and labor you may be better off in a Salvage yard or parts place for a different hub. The rear hub on front wheel drive cars is like a trailer axle. Much simpler to remove mounting bolts and press in new bolt. But if rear has differential(rear wheel drive) it has an axle shaft. Would be easier to grind and drill out broken stud on car. You can draw new bolt into place by placing bolt through a socket and use the wheel nut to draw the bolt into the hub.
Hub and Bearing Assembly
CAUTION: Do not begin this removal procedure unless the following parts are available:
A new front axle wheel hub retainer (3B477) (Step 1).
A new inboard halfshaft joint stub shaft circlip.
Once removed, these parts must not be reused during assembly. Their torque holding ability or retention capability is diminished during removal. Removal
Turn ignition switch to the OFF position and place the steering column in the unlock position.
CAUTION: Discard the front axle wheel hub retainer. It is a torque prevailing design and cannot be reused. If loosened, the retainer must be removed and a new one installed.
Remove and discard front axle wheel hub retainer (3B477).
Raise vehicle on hoist.
NOTE: Make sure steering column is in the unlocked position, and do not use a hammer to separate tie rod end (3A130) from the front wheel knuckle (3K185) . Use extreme care not to damage boot seal.
Remove cotter pin from tie rod end stud and remove slotted nut. Discard cotter pin and nut.
Using Tie Rod End Remover 211-001 (TOOL-3290-D) or equivalent and Tie Rod End Remover Adapter 211-087 (T81P-3504-W), remove tie rod end from front wheel knuckle.
CAUTION: Use extreme care not to damage boot seal. Do not use power tools to remove the nut, or bearing and seal damage will result. Loosen the nut first, then remove nut from stud using the hex hold feature.
For SHO vehicles, remove vinyl cover from upper link stud.
Remove stabilizer bar link (5K484) from front shock absorber (18124) .
Remove disc brake caliper (2B120) and support with wire to obtain working space. Do not allow disc brake caliper to separate from the front disc brake caliper anchor plate (2B292) to prevent contamination of the disc brake guide pin journals. Do not allow disc brake caliper to hang from front brake hose (2078) . Remove front disc brake rotor (1125) . Remove front disc brake rotor from wheel hub (1104) by pulling it off the lug bolt (1107). If front disc brake rotor is difficult to remove from front wheel knuckle , strike front disc brake rotor sharply between lug bolt with a rubber or plastic hammer.
If front disc brake rotor will not pull off, apply Rust Penetrant and Inhibitor D7AZ-19A501-AA or equivalent meeting Ford specification ESR-M99C56-A to inboard and outboard rotor/hub mating surfaces. Install 3-Jaw Puller 205-D027 (D80L-1013-A) or equivalent and remove front disc brake rotor by pulling on front disc brake rotor outside diameter and pushing on hub center. If excessive force is required for removal, check front disc brake rotor for lateral runout prior to installation. Refer to Section 06-00.
Remove anti-lock brake sensor mounting bolt and front brake anti-lock sensor (2C204) .
Remove and discard lower ball joint nut. Using Remover Adapter 211-211 (T96P-3010-A1), separate lower ball joint from front suspension lower arm (3078) .
Using Rotunda Spring Compressor 014-00781 or equivalent, compress front coil spring (5310) until lower ball joint clears front suspension lower arm .
Using Front Hub Remover/Replacer 204-069 (T81P-1104-C), Two Stud Adapter 205-237 (T86P-1104-A1), Metric Hub Remover Adapter 204-085 (T83P-1104-BH) and Front Hub Installer 204-067 (T81P-1104-A), press front wheel driveshaft joint (3B414) from wheel hub . Wire front wheel driveshaft joint to body to maintain a level position.
Metric Hub Remover Adapter
Front Hub Replacer
Turn Wrench Counterclockwise
Hold Wrench Stationary While Turning Other Wrench
Front Hub Remover/Replacer
Two Stud Adapter
Make Sure Metric Hub Remover Adapter 204-085 (T83P-1104-BH) is Fully Threaded onto 1107 and is Positioned Opposite the Two Stud Adapter 205-237 (T86P-1104-A1)
Remove and discard three hub and bearing retainer bolts from front wheel knuckle .
NOTE: Wheel hub is not pressed into front wheel knuckle . Do not use slide hammer to remove a stuck wheel hub . Do not strike back of inner bearing race. Use of these methods will damage bearing internal parts.
NOTE: If bearing carrier is corroded to front wheel knuckle , apply Rust Penetrant and Inhibitor D7AZ-19A501-AA or equivalent meeting Ford specification ESR-M99C56-A to the inboard and outboard wheel hub/knuckle mating surface and allow to soak.
Remove wheel hub from front wheel knuckle .
NOTE: If wheel hub is damaged or if any end play is detectable, replace wheel hub . End play is not adjustable. If wheel hub is disassembled, the assembly must be replaced.
Remove all foreign material from knuckle bearing bore for correct seating of new wheel hub.
Lightly lubricate mating surfaces of bearing corner and front wheel knuckle.
CAUTION: Knuckle bore must be clean enough to allow wheel hub to be completely seated by hand. Do not press or draw wheel hub into place.
Position wheel hub in front wheel knuckle . Install three new hub and bearing retaining bolts. Tighten to 83-107 Nm (61-78 lb-ft).
Push front wheel driveshaft joint into wheel hub . Hand start front wheel hub retainer.
Slowly release Rotunda Spring Compressor 014-00781 or equivalent while guiding lower ball joint into front suspension lower arm .
Install new lower ball joint nut. Tighten to 68-92 Nm (50-67 lb-ft).
Install tie rod end into front wheel knuckle . Install new slotted nut and tighten to 47-63 Nm (35-46 lb-ft). If necessary advance nut to install a new cotter pin.
CAUTION: Use extreme care not to damage boot seal. Do not use power tools to tighten nut or bearing and seal damage will result. Install nut using hex hold feature to prevent the stud from rotating.
Install stabilizer bar link to front shock absorber . Install stabilizer bar link nut. Tighten to 77-103 Nm (57-75 lb-ft). For SHO vehicles, install stud cover.
NOTE: Remove rust from the rotor and hub mating surfaces with a medium abrasive pad.
Install front disc brake rotor and disc brake caliper . Tighten caliper anchor bracket bolts to 88-118 Nm (65-87 lb-ft).
CAUTION: The front axle wheel hub retainer must be tightened to specification immediately during installation. If the retainer is not tightened immediately, the nylon lock will set incorrectly, leading to incorrect torque readings and bearing failure. Any front wheel hub retainer that is not immediately tightened to specification or is loosened must be removed and a new retainer installed.
Install front axle wheel hub retainer . Tighten to 230-275 Nm (170-203 lb-ft).
Install wheel and tire. Tighten lug nuts (1012) to 115-142 Nm (85-104 lb-ft).
Pump brake pedal prior to moving vehicle to position brake linings.
Section 04-01: Suspension and Wheel Hubs, Front
1996 Taurus, Sable Workshop Manual
REMOVAL AND INSTALLATION
Wheel Hub Bolt
Raise vehicle on hoist.
Remove wheel and tire assembly. Refer to Section 04-04 .
Remove disc brake caliper (2B120), and front disc brake rotor (1125). Refer to Section 06-03 .
Brake Shoe and Lining
Remove brake master cylinder filler cap (2162). Check fluid level in brake master cylinder reservoir (2K478). Remove brake fluid until brake master cylinder reservoir is half full. Discard removed fluid.
Raise vehicle on hoist. Refer to Section 00-02 .
Remove wheel and tire assembly from front disc brake rotor mounting face. Use care to avoid damage or interference with disc brake caliper (2B120), front disc brake rotor shield (2K004) or front wheel knuckle (3K185).
Remove rear brake pin retainers (2N386). ( I think it is a T 40 torx bit you need)
NOTE: It is not necessary to disconnect hydraulic connections.
Lift disc brake caliper from front disc brake caliper anchor plate (2B292) and front disc brake rotor (1125). Do not pry directly against metal caliper piston or damage will occur.
Position disc brake caliper out of the way and support with wire to avoid damaging the disc brake caliper and front brake hose (2078).
Remove outer brake shoe and lining (2001) assembly from front disc brake caliper anchor plate.
Remove inner brake shoe and lining assembly.
Position lug bolt (1107) to clear front wheel knuckle (3K185).
Remove lug bolt from wheel hub (1104).
Install lug bolt into wheel hub.
Using a lug nut (1012), seat wheel hub bolt into wheel hub.
Install front disc brake rotor and disc brake caliper. Refer to Section 06-03 .
Install wheel and tire assembly. Tighten lug nut to 115-142Nm (85-104 lb-ft).
usually they are an assembly but when i get crazy and damage studs i raise and support both front wheels so i can turn them and slowly move the hub where you can fit teh stud in and use an open lugnut to tighten down it will pull the stud in (i use an air compressor for this)
Yes you can replace the broken wheel stud. The wheel studs are pressed into place, and a vise will work to press it out, and in. You will have to remove the wheel hub, and then use a deep well socket and a bolt or something smaller than the actual stud to remove it with a vise. To replace it, you will need to use the deep well socket on the thread side of the stud, and press the new one in with the vise.
I hope this helps you, and I wish you luck with your repair.