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Drum Brake Shoe Thickness Chart

Drum Brake Shoe Thickness Chart - Roller and pin must not be welded in place. Use a rule to check the thickness of a bonded lining, measuring from the face of the shoe to the top of the lining. Replace shoes with the lining worn to. Web ideally, your brake pads should be thicker than 6.4 mm (¼ inches) for proper functioning. The maximum diameter or discard diameter is the maximum diameter to which the brake drum may be turned or worn, and still be usable. If shoe ends or lining must be ground to allow shoes to fit, or for the drum to go on, you may have a bent spider or the wrong shoes. (512 shoe ) 9 1308tt 15” x 4” meritor q front c1308 6 1308tt 15” x 4” eaton front c1308e 6 1308tt 15” x 4” meritor t front c1308t 5 1443tt 15” x 4” eaton es front c1443 7. Rear disc pads can be checked similarly, but rear drum brakes are much harder to check. Minimum thickness allowed is 1mm. Web next, check the thickness of the drum with a brake drum micrometer to make sure it is above the minimum thickness requirement, minimum thickness specifications are stamped into the drum, usually near the mounting hub.

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The Maximum Allowable Drum Diameters And Minimum Rotor Thickness Are Cast Into The Parts.

Web brake shoes are offered with various friction ratings, the most common are 20k and 23k. Web brake shoe minimum thickness is 1mm with the new thickness at 4.5mm. Web check drum diameter for bell mouth condition and turn drums or replace. If it’s thinner than this, consider getting a replacement soon.

If You Replace It At 3Mm You've Only Used Up Little Less Than Half The Usable Shoe Material (3.5Mm).

Web used on steering axles. Web diameter or minimum thickness stamped or cast on the brake drum or rotor. 3/4” pin roller is 1 1/2” outside diameter. 20k is the most common axle rating for tractor drive and trailer axles in the us and is a good choice for standard duty freight applications.

Then, Tag Along As We Will Tell You How To Measure Brake Drums With Precision.

Since the front brakes do roughly three quarters of all the braking, they tend to wear out three times faster than the rear, unless you drive a truck and haul heavy loads or tow. Less than 6.4 mm (1⁄ 4inch) at the shoe center for a shoe with two pads; Web f 5 illustrates marking and measurements of brake rotors and brake drums. Closed anchor pin with 1” opening.

If Shoe Ends Or Lining Must Be Ground To Allow Shoes To Fit, Or For The Drum To Go On, You May Have A Bent Spider Or The Wrong Shoes.

While some manufacturers may recommend a minimum thickness of 1.5 millimeters, most auto mechanics will recommend 3.0 millimeters instead. Web drum brake shoes are typically thinner than pads and don't wear as fast, typically speaking. Replace cam bushings at every reline. 23k is more common in vocational.

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