Squeaky brakes, I has them By jackryan172 (Read 1,699 times)

[jackryan172]

Hi All,

I have a shenke sl250 which is basically the honda clone 247cc engine with the honda reflex body. the bike currently has 1800 miles and some change. the brakes squeak something awful but it all looks okay and with no metal to metal. A fellow scooterist recommended some kind of compound to use that would eliminate the squeak but for the life of me I cant remember what he called it and I cant get ahold of him. Does this ring a bell?

Ps I will be doing a PDI inspection just for my own satisfaction and I would like to take care of everything all at once.

Thanks,
Sean

[JR]

Welcome to the forum Sean aka Jack Ryan, nice name! LOL Now you're not alone on the squeeky brakes and since you're going to do a PDI then let me make two suggestions, one remove the pads and take say about a 60 to 80 grit sandpaper and put it on a very hard and very flat surface and slightly sand the pads to clean and take off any posible glaze that makes them want to squeek. Just rub the pads gently over the sand paper with it on a very flat surface to keep the pads nice and flat too. The wipe the rotors clean with brake cleaner.

Now here's another suggestion that I've used with good results even on a squeeky clutch and you can get this at the local Dollar Store:



Yep roach powder! it's 99% boric acid in a weak form and if you put it on the rotors and can get some down on the pads and turn the wheels with the brakes slightly on then it cleans the pads/rotors and makes the pads seat in good to the rotor and helps a lot with the squeek.

Added benefit NO ROACHES! LOL

Again Welcome to the forum!

JR

[n4zou]

The people that assemble these Chinese scoots are paid by the number they roll off the line. They do not take the time to make required adjustments as they assemble them. With this in mind do not assume the brake was properly installed and inspected at the factory.

The disk brake calliper has a butterfly spring that exerts a slight pressure on the pads to force them apart slightly when you release the brake lever. Remove the pads from the calliper and look at that spring. It should exert equal upward pressure on the pads and a couple of little tabs should engage the pad exerting lateral pressure that pushes the pad opposite the pad that contacts the brake pistons. This spring keeps the calliper centred between the pads and disk as the pads wear down and slightly pushes the pads apart when the brake lever is released. An improperly installed or bent spring will cause uneven pad wear, a brake that never fully releases, and/or squeaking. While you have the brake calliper apart clean and apply a little grease on the pins the calliper slides on. These pins are located on the bracket that holds the calliper. It is very important that the calliper slides freely on these pins! Don't apply so much grease that will end up on the disk and pads. You only want a thin film on the pins and just a little inside the rubber seals that keep water, dirt, and brake dust away from these pins. I use marine grade water proof grease. Some people like to use other types of grease and that’s fine as long as that grease will not dry out over time or is susceptible to water contamination. We've all rode in the rain at some time and perhaps gotten a little carried away washing and rinsing it.