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Trek 4300 Bicycle Brakes Replacement

Introduction.

The trek bike uses caliper breaks. When the grooves of the breaks disappear it means it is time to replace the brakes. Once replaced the brakes will need to be realigned so that the pads contact only the rim of the bike.

What you need

Step 1 loosening the brake pads.

Position the bike so you are facing the braking mechanism of the front wheel.

Locate the brake calipers. Push the calipers together to relieve the brake tension. Unhook the brake wire from the metal tube in your left hand.

Locate the brake pad.

Using a socket screwdriver with a hex adapter, loosen the nut holding the brake pad in place.

Repeat for both brake pads.

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Step 2 removing the brake pads.

Next, take the nut completely off of the bolt.

There are 5 washers per brake pad so be sure not to misplace any.

It helps to place the nut and washers in order to make reassembly easier.

Remove the three washers in between the nut and caliper. These will be referred to as the outside washers.

Next remove the brake pad from the caliper and remove the two washers sitting in between the caliper and the break pad. These will be referred to as the inside washers.

Step 3 Replacing New Brake Pad

Take your new brake pad and place the two inside washers on the bolt and slide them all the way to the pad. The one closest to the caliper should have one rounded edge that faces away from the caliper surface.

Feed the bolt through the elongated hole on the caliper with the brake facing toward the centerline of the bike.

Next feed the outside washers onto the bolt. The rounded washer should be placed first with the rounded edge away from the caliper.

Finally screw the nut onto the end of the bolt and tighten the nut enough to stay on but still allowing the brake pad to slide up and down in the oval shaped hole in the caliper.

Repeat these procedures for both sides.

Step 4 Adjusting the Brake Pads

Make sure the top of the pad is facing up.

The brake pad should have a subtle curve and should be aligned so that the curve of the brake pad matches the curve of the wheel.

Slide the break pad to the correct height in the caliper so that the pad is making contact only with the rim of the bike.

Holding the brake pad in place with one hand, tighten the bolt until snug. This should not require a great amount of force, but you should not be able to wiggle the brake pad after tightening.

It is important to take time to properly align your brake pads because failure to do so could cause the brakes to fail and/or the tire to be damaged.

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Trek Recalls Promax Hydraulic Disc Brakes Sold on Trek Bicycles Due to Crash Hazard

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The brake hose can detach from the brake lever, posing a crash hazard.

About 96,900

Trek at 800-373-4594 from 8 a.m. to 6 p.m. CT Monday through Friday, or online at www.trekbikes.com/us/en_US/company/legal_policies/safety_recalls or www.trekbikes.com and click on “Recalls” at the bottom of the page for more information.

Recall Details

This recall involves Trek bicycles with revision 1 of the Promax Solve DSK-925 and Promax F1 DSK-927 hydraulic disc brakes installed as original equipment on the bicycle models listed in the table below. The serial number is printed on a sticker underneath the frame of the bicycle.

Consumers should immediately stop using the bicycles with the recalled brakes and contact their local authorized Trek dealer for a free inspection and repair. Consumers can check their bike’s serial number at www.trekbikes.com/us/en_US/promax-recall-inquiry/ to determine if their bike is included in this recall.

Trek has received 195 reports of brake hoses detaching from the brake lever in the United States. No injuries have been reported.

Trek Bicycle Corp., of Waterloo, Wisconsin

Note: Individual Commissioners may have statements related to this topic. Please visit www.cpsc.gov/commissioners to search for statements related to this or other topics.

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• Bicycle Brake and Chain Maintenance

How to Fix Brakes on a Bike

Last Updated: April 28, 2023

Checking Calipers

Changing brake pads, servicing the brake levers, coaster brakes, expert q&a.

This article was co-authored by Jonas Jackel . Jonas Jackel is the Owner of Huckleberry Bicycles, a bicycle retail store based in San Francisco, California. Jonas has over 20 years of experience managing bicycle retail stores and has operated Huckleberry Bicycles since 2011. Huckleberry Bicycles specializes in servicing, repairing, and custom building road, cross, gravel, touring, folding, and e-bikes. Jonas was also previously sat on the Board of Directors for Bike East Bay, a bicycle-advocacy non-profit organization based in Oakland, California. This article has been viewed 1,075,022 times.

There can be many problems and solutions to bicycle brakes. This article will attempt to cover the common problems with caliper type brake systems, and only mention coaster brakes briefly.

Things You Should Know

• Remove the nut and washers from your old brake pads, and pull the pad free from the caliper arm. Then, install your new brake pads.
• Service your brake cables by lubricating the caliper pivot with brake oil. Your brake cables should be about 1⁄4 inch (0.6 cm) from the wheel rim.
• Lubricate the “pivot” pin on the lever handle with brake oil to service your brake levers.

Servicing the Cables

Servicing the Calipers

• Don't buy a smaller brake pad Thanks Helpful 5 Not Helpful 2
• Read the owners manual Thanks Helpful 2 Not Helpful 3
• If you are not sure how to mount or unmount your brake pads, don't do it. Get help from someone who does. Thanks Helpful 2 Not Helpful 3

• Secure the brake pad firmly so that your newly installed pads work efficiently Thanks Helpful 0 Not Helpful 1
• Ride slowly to test the brakes first! Thanks Helpful 0 Not Helpful 1

Things You'll Need

• New brake pads
• Right type of replacement parts.
• Basic hand tools.
• Lubricating oil.

You Might Also Like

• ↑ https://totalwomenscycling.com/road-cycling/maintenance/ask-expert-know-brake-pads-need-replacing#RCZfVeQJIlpEEDip.97
• ↑ https://www.bicycling.com/bikes-gear/a20023166/the-beginners-guide-to-disc-brakes/
• ↑ https://www.bicycling.com/repair/a20021308/skills-test-replace-worn-brake-pads/
• ↑ https://www.youtube.com/watch?v=vsv5THnUl-Q

About This Article

If your bike’s brake pads are worn to less than ¼ of an inch, you’ll have to replace the pads. To do so, remove the nuts and washers from your old pads and pull the pads free from the calipers, which squeeze the pads to the tires to make the bike stop. Then, put the new pads in, align them with the tires, and replace the nuts and washers. If you need to adjust your brake’s calipers, tighten the spring on the side that’s moving too much by bending it with pliers. For brake cables that are really stiff or hard to work, remove them completely and lubricate them. To learn how to check your bike’s pads, cables, and calipers to see what needs to be fixed, read on! Did this summary help you? Yes No

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