Rear brake problem
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Intermediate
Joined: Mar 2013
Posts: 39
Likes: 0
From: Florida
Rear brake problem
I have a 98 Fat Boy that was once owned by my deceased brother. The bike has Performance Machine 4 piston calipers front and rear. A couple of months ago I noticed that the rear brakes were not feeling right, spongy. The rear brake caliper looked ok so I tried to bleed them with no difference. I decided to replace the master cylinder and it didn't help much. I pulled off the rear PM brake and replaced it with a OEM rear brake caliper. The brake finally felt firm but after riding a while I noticed that every now and then the pedal would go all the way down to the floor and then would be alright again after a couple of pumps. I checked all the lines and there is no leaking I am really scratching my head, I have been riding Harleys since the mid seventies and have never seen this before, any suggestions?
Road Warrior
Joined: May 2010
Posts: 1,593
Likes: 11
From: Mass/NH
My rear brake started making a noise and acting funny just before the rear bearing failed. The brake was helping to hold the wheel in place...which ruined it, the axle, the belt, etc....Probably not it, but worth checking if nothing else fits as the cause...I switched my bearings to timken (all ***** makes good ones also).
Outstanding HDF Member
Joined: Apr 2012
Posts: 2,938
Likes: 30
From: North Florida
Its just like when you put on new brakes and you have to pump the brakes to get the pistons pushed out to make contact.
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