1998 YAMAHA BIG BEAR 350 4WD-replacing brakes

[dctaz37]

Hello, the ATV doesn't stop anymore so I guess it is time to replace the brakes. Looking for part number and instructions. I think it may have shoes front + back and the front would be hydraulic. 

[MarkinAR]

Check Babbitt's online or partzilla.  they have full diagrams so you can find what you need.

[dctaz37]

Thanks, I checked the front brakes and pads look okay. Not sure why stopping isn't very good.

[dctaz37]

I adjusted the brake handle and when I engage the brakes the handle still has a lot of resistance but the brakes don't stop well.  I saw another post here with the same issue and they suggested to adjust the shoes. I took my brakes apart and the adjusters are seized. I tried to figure out how they work so I loosened the side that is in the wheel cylinder and removed it but there is no thread to go in or out so I don't know how they work. I sanded the pads a bit to get them rough. Reassembled and same issue. 

[MarkinAR]

That one had front hydraulic drums, right?  Been a while since I was in to one of those.  If the handle is stiff and not providing any braking I'd suspect the wheel cylinders are partially seized.  If it were a squishy handle I'd suspect the master cylinder o-rings were bad.

[dctaz37]

I replaced the shoes on back and both fronts. Seems better but still not great. The adjusters on the front were all seized and a real pan to free up. One ended up getting a warp so it doesn't work very well now. I got it together as well as I could but really hard to adjust the shoes. Especially when it is full time 4x4 so when you turn the wheel you get the resistance of the other wheel etc...