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Can't get drum off - Malibu Chevrolet Cars & Trucks

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Once tire is off get a large hammer (2 - 3 ) pound and hit drum several times on the face of drum and along the outer area to brake it free, most times the center of drum rusts to axle shaft causing it to stick. dont be afraid to hit the bastard !! and then use larger screwdriver and install behind the drum between the back plate and pry off while hitting opposite side from the back with hammer. I recommend putting on lug nut just enough to cover the threads on lugs so you do not accidently hit them with hammer. and yes you will !! then remove nuts upon drum removal

Posted on Apr 03, 2011

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Posted on Jan 02, 2017

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Brake drum


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What tools are required to change drum brakes on 2005 sunfire


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1 Answer

How to change the brake drums


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2 Answers

1994 c2500 rear drum removal problems


Hi,

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The information set forth below is the approach used in our shop.

There is a high probability that one of the conditions set forth below is causing your drum to bind as you try to remove it. The simplest solution is to use your brake spoon develop the maximum amount of spacing between the brake shoe and the drum.

If that doesn't work, on occasion we've had to use a chisel or a cutting torch to remove the drum. It is very seldom that such drastic measures must be taken but it has happened.

Surface/Heat Checks/Cracked Drum/Out-Of-Round Drum Brake drums act as a heat sink. They absorb heat and dissipate it into the air. As drums wear from normal use or are machined, their cooling surface area is reduced and their operating temperatures increase. Structural strength also reduces. This leads to overdistortion, which causes some of the drum conditions covered here.

Scored Drum Surface
A scored drum surface shows a scored drum surface. The most common cause of this condition is buildup of brake dust and dirt between the brake lining and drum. A glazed brake lining, hardened by high heat or in some cases by very hard inferior grade brake lining, can also groove the drum surface. Excessive lining wear that exposes the rivet head or shoe steel will score the drum surface. If the grooves are not too deep, the drum can be turned.
f45-17.gif Example of a scored brake drum. Courtesy of Wagner Brake Products. Bell-mouthed Drum
Bell-mouthed drum shows a distortion due to extreme heat and braking pressure. It occurs mostly on wide drums and is caused by poor support at the outside of the drum. Full drum-to-lining contact cannot be achieved and fading can be expected. Drums must be turned.
f45-18.gif Example of a bell-mouhed brake drum. Courtesy of Wagner Brake Products.

Concave Drum
A concave drum exhibits an excessive wear pattern in the center area of the drum brake surface. Extreme braking pressure can distort the shoe platform so braking pressure is concentrated at the center of the drum.
f45-19.gif Examples of concave and convex brake drums. Courtesy of Wagner Brake Products.

Convex Drum
A convex drum exhibits excessive wear at the closed end of the drum. It is the result of excessive heat or an oversized drum, which allows the open end of the drum to distort.

Hard Spots On The Drum
This condition in the cast-iron surface, sometimes called chisel spots or islands of steel, results from a change in metallurgy caused by braking heat. Chatter, pulling, rapid wear, hard pedal, and noise occur. These spots can be removed by grinding. However, only the raised surfaces are removed, and they can reappear when heat is applied. The drum must be replaced.

Threaded Drum Surface
An extremely sharp or chipped tool bit or a lathe that turns too fast can result in a threaded drum surface. This condition can cause a snapping sound during brake application as the shoes ride outward on the thread, then snap back. To avoid this, recondition drums using a rounded tool and proper lathe speed. Check the edge of the drum surface around the mounting flange side for tool marks indicating a previous rebore. If the drum has been rebored, it might have worn too thin for use. Check the diameter.

Heat Checks
Heat checks are visible, unlike hard spots that do not appear until the machining of the drum. Extreme operating temperatures are the major cause. The drum might also show a bluish/gold tint, which is a sign of high temperatures. Hardened carbide lathe bits or special grinding attachments are available through lathe manufacturers to service these conditions. Excessive damage by heat checks or hard spots requires drum replacement.
f45-20.gif Example of a heat checked and over-heated brake drum. Courtesy of Wagner Brake Products.

Cracked Drum
Cracks in the cast-iron drum are caused by excessive stress. They can be anywhere but usually are in the vicinity of the bolt circle or at the outside of the flange. Fine cracks in the drums are often hard to see and, unfortunately, often do not show up until after machining. Nevertheless, should any cracks appear, no matter how small, the drum must be replaced.

Out-Of-Round Drum
Drums with eccentric distortion might appear fine to the eye but can cause pulling, grabbing, and pedal vibration or pulsation. An out-of-round or egg-shaped condition is often caused by heating and cooling during normal brake operation. Out-of-round drums can be detected before the drum is removed by adjusting the brake to a light drag and feeling the rotation of the drum by hand. After removing the drum, gauge it to determine the amount of eccentric distortion. Drums with this defect should be machined or replaced.
f45-21.gif Measure the inside diameter of the drum in several spots to determine out-of-roundness.

An out of round or tapered drum prevents accurate brake shoe adjustment prevents not only difficult removal but also can cause excessive wear of other brake parts; excessive tire wear; and, a pulsating brake pedal.

All the best

Ben

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1 Answer

Rear break drum wont come off


sometimes if the brakes are old and they wear a groove in the drum it creates a ridge on the outer edge of drum that stops the drum from sliding off shoes. If you can from behind the dust plate release the brake adjuster to allow the brakes to release. Also the drum itself gets rust around the outer inner part on the axle hub. Spray WD 40 on center outside hub area. Use a larger hammer and hit drum on the outer face several times to send shock waves to drum which will break loose then install larger flat pry bar or screwdriver behind drum ( between dust shield and drum) and pull outward as to pry the drum off hub while striking drum on opposite side rear of drum. You will succeed and sometimes it can be a toughy.

Apr 02, 2011 | 1999 Suzuki Grand Vitara

1 Answer

Remove rear drum brakes


Hit the drum with a hammer to loosen it up. The drums wont come off easy because the shoes form a litte bit of a ridge in the drum

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1 Answer

66 gto front left wheel nuts come losse has one new brake drum numbers on drums are all matching except one number on each drum 0bo1 9a30 9a30 is new drum . the rim apears to be rubing on the face of new...


Is it rubbing on outside edges of drum, or in the center area? Did you double check to make sure center of drum is all the way on the hub as it should be, compared to others? I'd look real close at size of center going over hub, for no slop, and on all the way, as well as measure thickness of drum compared to others where it's rubbing. The only place you want the drum and rim touching, is at the studs and face of drum behind it. Make sure center of rim isn't bigger as well.

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2 Answers

How do you rmove rear brake drum 2004 frontier 4x4


Hope this helps.
Good luck,

Removal & Installation


  1. Remove the hub cap and loosen the lug nuts.
  2. Raise the rear of the vehicle and support it on jackstands.
  3. Remove the lug nuts, tire and wheel.
  4. Release the parking brake.
  5. Pull the brake drum from the hub. If difficult to remove try the following:
    1. Strike the face of the drum with a plastic or rubber mallet. This will break free any rust that may develop between the drum and the hub.
    2. Install 2, M8x1.25mm bolts into the holes in the drum and gradually tighten them to pull the drum off the hub.



  6. 0900c152801a5f72.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Install and tighten 2 bolts to remove a stubborn brake drum

To install:
  1. Install the brake drum to the hub.
  2. Install the wheel.
  3. Remove the jackstands and lower the vehicle.
  4. Road-test the vehicle to ensure that the brakes are working properly.

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the brake fluid, as necessary.
  3. Release the parking brake.
  4. Raise the vehicle and support safely.
  5. Remove the tire and wheel assembly.
  6. Pull the brake drum from the hub. If difficult to remove try the following:
    1. Strike the face of the drum with a plastic or rubber mallet. This will break free any rust that may develop between the drum and the hub.
    2. Install 2, M8x1.25mm bolts into the holes in the drum and gradually tighten them to pull the drum off the hub.

      0900c152801a5f72.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Install and tighten 2 bolts to remove a stubborn brake drum

Oct 23, 2009 | 2004 Nissan Frontier

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