jeepheep1

Just a few days ago I took all 4 tires off and cleaned my pads and rotors with EverWear gold brake parts cleaner (think that was it) and ever since then they've been jumping/hopping a little bit when I brake at low speeds, under 10mph. The brakes are almost brand new.
Also at low rolling speeds the rear end makes a kind of humming noise. Should I just try greasing up the bearings first?

The last thing I want is any kind of brake failure or to lose a bearing driving down the road. Any suggestions would be great.

XJpax

try burning them in to give it a good surface. sounds like they are just locking up at slow speeds. go reasonably fast and then brake quickly, but let off before coming to a stop. try this a a couple of times

CompleteCherokee

you should check the pads and make sure that there isn't any gunk built up on them. If so, you can use a scotchbrite pad with a few small passes to try and remove any glazed or built-up material. Depending on how aggressive you were with the spray cleaner, you may want to go in and check the bearings and see if they need to be repacked.

jeepheep1

I tried burning them and that worked and they aren't skipping any more but I'm still getting that low hum from the rear end. I went crazy with the brake cleaner so I guess I'll need to repack those bearings.

dwright98xj

Just throwing this out there as a thought: When it when it's "jumping/hopping" as if the ABS (if applicable, no year stated) is active, pedal pulsation?

jeepheep1

02 WJ. No there was no pulsation. Pedal stayed constant

dwright98xj

hmmmm.... my thought was maybe you inadvertantly created a film on the sensor pickup causing a wacko reading or two.

Years ago you didn't want to get "cleaner" in excess on the pads. What kind of pads are you using (not brand, composition).

jeepheep1

ceramic pads

jeepheep1

I think I've deleted the braking issue though. Now it's time to asses these wheel bearings

CompleteCherokee

yep, and don't wait to check / repack them. Those are a major safety issue if they fail, and tend to make it a pricey repair when they go.

jeepheep1

Alright guys thanks for your help. I went and got full synthetic valvoline packing grease and when I went to take the rear pass tire off the lugs were barely hand tight and one was completely stripped and almost off so I got a new lug and tightened em all down and that solved that hum I guess it's good I checked! I held onto that packing grease and I'm going to do all four bearings tomorrow anyway