vibrations only during braking

[DGunter]

I recently bought an 04 6.0 harley. Money bucket so far but trying to like it. I was told by the dealer it needed brakes so i changed the front brakes and rotors in doing so i found it had bad ball joints so it still vibrated during braking but i was blaming the ball joints . they were replaced and it still vibrates only when braking so i had the rotors warrantied and replaced them again still vibrating. I have rolled the truck down a hill with the engine off it still vibrates. It vibrates forward or reverse running or not and even if i keep torque on the drivetrain while tapping the brakes it vibrates I'm leaning towards tires but it seems to hard of a vibration for tires cause it does it at the slowest speeds possible i'm at a loss i'm looking for some insight whether its axles or driveshaft i'd just like to fix it. Thanks fellas.

[Jonboywv12]

when you go into 4wd is it still strong?
and when was the last time everything was greased down there?

[melmount]

I assume you did, but did all the sliding pins get lubed on the front caliper mounting hardware. Mine got frozen and the caliper could not slide in and out.

[mr.garrett72]

does the stearing wheel rock back in forth when you break or is it an up and down type of vibration where and how does it vibrate as there are many parts to the front end that could be the culprit

[DGunter]

4wd is still strong I have checked everything i can think of when i changed the ball joints 2 weeks ago everything got greased. I will however take it apart and specifically clean and lube the pins i didn't notice anything out of the ordinary when i did the brakes but honestly didn't check.

[DGunter]

And, it's mostly up and down vibration feels like the front and everything is tight. Another issue i recently took on was going down the highway about 80 i felt a slight vibration and the power loss. was hoping it wasn't a hg but when i got in some lights i realized it was all raw fuel so i'm hoping it's just an injector.

[03f250stroke]

id drive that through the dealers showroom with the keys on the hood.

seriously though, being you dont know the past history..id check everything up front. My front end was done twice in the 3 years ive had it.

[Jonboywv12]

yeah your not kidding when i bought my truck i had some problems to that just started appering cause of the past history of owners, vibrating shaking grinding you name it its happend just take it to a well certified garge and have them check it out

[bundymon]

You may check the calipers. I busted to two driver side ones about two weeks apart. One of them vibrated badly before it broke, the other seized to the pad and rotor destroying them.

[Jonboywv12]

dang now thats a problem lol sorry man