Ask The Editors: Brake Lever Not Returning

Ask The Editors: Brake Lever Not Returning

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Ask The Editors: Brake Lever Not Returning
Brakes broke.

Dear ATVC: I just purchased a 1999 Honda Recon TRX250 that needed a complete brake overhaul. I replaced the front brakes and noticed the wheel cylinders on both sides were froze up so I worked them in and out until I got them both working properly. Then when I was testing the brakes I noticed that the brake lever sticks in and won’t return. Any idea what this might be?

There are actually several possible causes so let’s start with the most obvious. After replacing the front brakes, have you ensured that the brake fluid level was properly topped off after bleeding the lines? Air in the system will cause the lever to fail to return. Additionally a leaking hydraulic line or seal will also cause this to happen. These should be easy enough to spot thanks to a telltale pool of brake fluid.

If all this looks good (hydraulic disc models), check your calipers – is the piston squeezing the pads against the rotors when you apply the brake and letting them go when you release or are the brakes stuck on? This could be an indicator of caliper replacement but before that we’d remove the calipers and thoroughly clean/ grease the assembly. When it comes to the rigors of off-roading, dirt, rust and grime can find their way into the piston and prevent it from fully disengaging and operating smoothly.

If that all checks out, pop the cap on the master cylinder and check the piston on the top-side of the assembly. Pull the brake lever and pay close attention to where the lever moves the piston. Sometimes this area gets gummed up. If that’s the case, clean it and lubricate it, ensure that your fluid level is topped off to where it should be.

If all of this yields no improvement, the last thing to check is the lever itself. Look for dirt or grime jamming up the rubber grommet behind the boot – something as simple as a piece of twig or kicked up pebble here can make it impossible for the lever to retract.
Ask The Editors: Brake Lever Not Returning
NOTE – Many Recon 250 packages came equipped with hydraulic drum brakes rather than disc in the front – in which case most of the advice contained within this article still applies except that rather than checking the caliper / piston for pad actuation, you would instead be checking for shoe contact with the drum and internal spring tension.

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