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Pelican Technical Article:

Replacing Rear Brake Pads

Mike Holloway

Time:

30 minutes30 mins

Tab:

$10 to $30

Talent:

*

Tools:

Needle nose pliers, hammer, punch, 11mm socket wrench, and a 5/16 center punch, and a regular plier

Applicable Models:

Mercedes-Benz R107 (1972-89)

Parts Required:

Rear brake pads

Hot Tip:

Wash the wheel down or vacuum to remove dust

Performance Gain:

Better stopping

Complementary Modification:

Change brake fluid

Brake pads may contain asbestos which has been known to cause cancer. It's a very good idea to wear a respirator or a mask. While changing your brake pads may not create enough asbestos dust to lodge into your lungs and bring about cancer, it is better safe than sorry. The brake system is made up of a caliper which holds the brake pads. The brake pads press against the brake rotors and slow the rotation of the wheels. The master cylinder pumps brake fluid to actuate the pads applying pressure to the rotors. Over time the brake pads wear down. There are sensors which send a signal indicating wear to the point of replacement. Replacing the brake pads is straight-forward.

Begin by jacking up the rear of your M-B and supporting the rear axle with jack stands. For more information please consult our article on safely jacking up your Mercedes Benz. Also remember to always wear safety glasses anytime you work under your car.

There are a few ways one can replace the rear brake pads. This is a quick method that replaces the pads only without having to take off the calipers. After removing the tire, spray an evaporative cleaner or at least water on the parts before disassembly. This will make the job a lot easier and safer.

Before you do any work on your car it is important that you wear safety glasses, work gloves and dispose of all fluids in a safe manner. If you have to jack up your car, make sure to use jack stands and chock your wheels as well as applying the parking brake. Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Never work on your vehicle if you feel the task is beyond your ability. Always wear eye and hand protection.

With a pair of needle nose pliers, remove the locking eyes from the end of the retaining pins as shown.
Figure 1

With a pair of needle nose pliers, remove the locking eyes from the end of the retaining pins as shown.

Remove the second locking eye.
Figure 2

Remove the second locking eye. This will enable you to push the retaining pins out.

Use a 5/16ths inch center punch and hammer to remove the retaining pin form the caliper.
Figure 3

Use a 5/16ths inch center punch and hammer to remove the retaining pin form the caliper. There are two pins.

Careful not to hit the pins too hard as you may damage the calipers or rotor.
Figure 4

Careful not to hit the pins too hard as you may damage the calipers or rotor.

With the needle nose pliers, remove the brake pad retaining spring.
Figure 5

With the needle nose pliers, remove the brake pad retaining spring. 

Using a 15mm socket wrench loosen but don't remove the 4 bolts that hold the calipers together.
Figure 6

Using a 15mm socket wrench loosen but don't remove the 4 bolts that hold the calipers together.

Using needle nose pliers, pull out the brake pad.
Figure 7

Using needle nose pliers, pull out the brake pad.

Examine the pad for excessive wear.
Figure 8

Examine the pad for excessive wear.

You may have to use a pair of pliers to pull out the second brake pad from the caliper.
Figure 9

You may have to use a pair of pliers to pull out the second brake pad from the caliper.

Examine the pad for wear.
Figure 10

Examine the pad for wear. Installation is in the reverse of removal.

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Page last updated: Wed 12/7/2016 02:47:40 AM