Tip & How-To about Toyota Corolla

Why wheel nuts should be torqued .

The wheel nuts hold the brake rotor to the hub.
If the rotor is distorted because the wheel nuts are too tight,the error is amplified because the rotor is much bigger around the outside edge where the brake pads are.
When the brakes get hot,the metal expands and further worsens the problem.
Overtightening the nuts especially on an uneven basis,can warp rotors very easily,or damage the aluminum wheels as well as the hub and bearings.
There are special torque sticks made for the 65 to 80 lb.ft.rating of most of the popular japanese cars.
There are also higher value bars for larger vehicles.
Most one ton diesel trucks are in the 145 to 165 lb.ft range.
Wheel nuts are tightened in a specific pattern as well,depending if they are 4,5 ,6,or 8 bolt design.
Most impact guns are 250 to 400 lb.ft of torque.Some are more than that.
Alot of technicians think that they are so good that they can torque the wheel nuts by "feel",without using a torque device or torque wrench.
The only reason they do not use torque sticks is to save some time.
In the long run they lose money though.
For the 30 seconds it takes per wheel,the incidence of doing free warranty work from warped rotors is reduced drastically.
Manufacturers have the torque specs for very good reasons.
Ask the shop that works on your car or truck if they use torque sticks,bars,or a torque wrench on the wheels.
If they do not,look for a different shop that does not take short cuts.

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3 Answers

how to replace a front wheel hub assembly on a 1999 blazer 2wd


remove tire
remove axle nut
remove 3 bolts holding hub in
sometimes may need to hit hub with hammer after all bolts out to get it to release

Dec 22, 2010 | 1999 Chevrolet Blazer

1 Answer

Procedure to replace rear rotors


In short, Remove wheels and tires. Remove brake caliper and brake caliper mount. Remove axle. Take nuts off inside axle and remove entire hub. From back side remove bolts holding the rotors to the hubs.... remove rotor and reassemble in reverse. You will need new oil seals.... This is a heavy duty truck and has some big parts and some really large and tight bolts. Not a job for the meek!

Nov 10, 2010 | 2006 Ford Super Duty F 550 Drw

1 Answer

need to change a front wheel bearing...is it hard to do myself?


moz-screenshot-2.png-Jack up the car
-remove the tire, 19mm socket
-remove the brake caliper, its either an 18mm or 15mm socket that will remove the bracket bolts.
-remove the rotor
-remove the axle nut, its either a 34 or 36 mm
-unplug ABS sensor connector if equipped
-remove the three bolts that hold the bearing/hub assembly to the knuckle, a 13mm socket will work
Remove the wheel bearing.

It is important to tighten the axle nut to the proper spec. Failure to do so will cause the new bearing to fail. you will need a 1/2" torque wrench for this.

To make removing and installing the axle nut easier place a punch in the fins of the rotor and rotate the rotor until the punch rests on the caliper (it doesn't hurt to put a couple lug nuts on to hold the caliper tight to the hub). This will hold the hub in place while you looses and tighten the axle nut.

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Nov 09, 2010 | Chevrolet Tahoe Cars & Trucks

2 Answers

I have a 95 Chevy suburban and I am trying to change the rotor and can not get it off. The lugs are attached to the rotor and not sure what I should do


Removing: Loosen lug nuts (7/8") and spindle nut (36mm). Lift truck. Remove lug nuts, spindle nut, and wheel. Remove 2 bolts (3/8" allen) holding calipers on. Hold the calipers up with a bungee cord. I attached it to the sheet metal of the fender. Remove 4 bolts (15mm) from rear of hubs. Once these bolts are removed you can move the shield that is in-between the hub and the axle(I think). You are moving it to get access to the allen bolt that holds the ABS sensor on. Once you move the shield then you can look through the top of the rotor through the slots and see the sensor line and bolt. I don't remember what size allen this one took. You do need a long allen wrench though. Disconnect sensing line from hub. Now the rotor is ready to come off. I had to use a pry bar to remove this gently working each side until it popped off. Once the rotor is removed, you need to hammer out the lug bolts. Then you have to tap the rotor away from the hub. This took a little work. Then check each of the lug bolts by screwing the lug nuts on them. They should go all the way down by hand. If they don't - go buy new bolts $2 a piece. Installing: Position new rotor on hub. Get some dry ice from your local grocery store and freeze the bolts for about 10 minutes. Pull one bolt out of the ice at a time and install on the rotor and tighten the bolt with the lug nut. I put the nuts on upside down and used a 7/8" wrench and mallet to tap on the wrench to get these as tight as possible. You also have to tap on the head of the bolt and repeat the wrench tapping. Do this for each bolt pulling one out of the ice at a time. You do not have to get the rotor and hub completely together but get it as close together as possible. Once all of the lug bolts are in it is time to put the rotor on the truck. Ensure the shield is on the spindle and install the rotor, again, this takes some work. Once the rotor is on, connect the ABS sensing line. Line up the shield and install 4 bolts to rear of hub. You can align these by moving the hub, not the rotor. Install the caliper, remember to put brake grease on these 2 bolts. You may have to compress the caliper slightly. To do this remove the brake pad that has the circular part of the caliper touching it. Open the brake fill cap on the master cylinder. Use a C-clamp to compress the circular part. Reinstall the brake pad and brake fill cap. Install the caliper. Install the wheel and tighten lug nuts. I used a cheater bar on my tire iron and ensured that the lug bolts were flush with the head of the lug nuts. Then I removed the wheel to verify that the gap between the rotor and the hub was gone. Reinstall wheel, tighten lug nuts, and tighten spindle nut. Once both brakes have been replaced, start up the truck and pump the brakes several times till you feel some tension when pressing them.

Nov 25, 2009 | 2000 Dodge Durango

1 Answer

I have a bad wheel bearing how do I replace it


Hub and Bearing Assembly
ani_caut.gif 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
  1. Turn ignition switch to the OFF position and place the steering column in the unlock position.
  1. ani_caut.gif 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).
  1. Raise vehicle on hoist.
  1. 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.
  1. 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.
  1. ani_caut.gif 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) .
  1. 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.
  1. Remove anti-lock brake sensor mounting bolt and front brake anti-lock sensor (2C204) .
  1. 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) .
  1. Using Rotunda Spring Compressor 014-00781 or equivalent, compress front coil spring (5310) until lower ball joint clears front suspension lower arm .
  1. 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.


    df1570a.gif


    Item Part Number Description 1 204-085 (T83P-1104-BH) Metric Hub Remover Adapter 2 204-067 (T81P-1104-A) Front Hub Replacer 3 — Turn Wrench Counterclockwise 4 — Hold Wrench Stationary While Turning Other Wrench 5 204-069 (T81P-1104-C) Front Hub Remover/Replacer 6 204-067 (T81P-1104-A)1 Two Stud Adapter A — 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)
  1. Remove and discard three hub and bearing retainer bolts from front wheel knuckle .
  1. 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 .


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Installation
  1. 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.
  1. Lightly lubricate mating surfaces of bearing corner and front wheel knuckle.
  1. ani_caut.gif 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).
  1. Push front wheel driveshaft joint into wheel hub . Hand start front wheel hub retainer.
  1. Slowly release Rotunda Spring Compressor 014-00781 or equivalent while guiding lower ball joint into front suspension lower arm .
  1. Install new lower ball joint nut. Tighten to 68-92 Nm (50-67 lb-ft).
  1. 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.
  1. ani_caut.gif 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.
  1. 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).
  1. ani_caut.gif 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).
  1. Install wheel and tire. Tighten lug nuts (1012) to 115-142 Nm (85-104 lb-ft).
  1. Lower vehicle.
  1. Pump brake pedal prior to moving vehicle to position brake linings.

May 28, 2009 | 1999 Ford Taurus

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