f150 brake squeal after brake job

2000 F150 2WD: I just replaced rotors, seals, cleaned and relubed bearings, new pads, new anti rattle clips, lubed calliper sliders, new callipers. Best feeling brakes I've ever experienced! Smoooth as butter and quiet. Three weeks of rain (rotor rust) later the brakes have been starting a slight high pitch squeal sometimes, at slower braking speeds especially noticeable on faster left turns. I used Monroe pads and assume there may have a higher metallic content that creates more squeal than the OEM..

Question is: Should I tighten the bearings even more or is this play a pretty natural thing? I would guess there is a slight play in the bearings when cornering causing the pads to touch when I'm not braking. When I originally installed the rotors I tightened the bearings with and adjustable with four finger pressure (10-20 lbs?) while turning the rotor, then loosened the nut and tightened with a rag and finger tight pressure (5-10 lbs?). One other thing, I used 2000 degree anti seize on the pad backings (worked fine the last time) , is brake anti-squeal grease that much better?

Reply to
RJenson
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Guessing at a problem is always a bad thing. If there_is_enough play in the bearings to be the cause, you do need to re-adjust them. This time use a torque wrench. Since you do your own work, you should buy one and use it. The wheel bearings need to be 'seated', using a torque wrench, at 25lbs while rotating the rotor in the opposite direction. Back off

1/8 of a turn and then finger tight them. Put on the nut-lock so there is a hole for the cotter-pin to go through. The nut-lock/spindle nut should not be turned any more than 1/2 flat for the pin installation. Once you get the wheels mounted, grab the tire at 12o'clock/6o'clock or at 9 & 3 and move it in/out. There should not be more than 0.0005in of play (that ain't much play, so you shouldn't feel any looseness) For example: 1/64th in=0.15625in

Hope this helps.......

Dave S

Reply to
putt

Found the intermittent squeal: Had a chance to lift the truck today. Bearing adjustment was still perfect. Pulled front of wheel while pushing rear of wheel while turning. Squealing was coming from lower anti-rattle clip - it slid over a bit and was rubbing on rotor in turns. The new ones had a tab that should have been bent down to hold it in place. My fault. Back to having the smoothest, quietest brakes in town Thanks for your input.

Reply to
RJenson

Think you missed a decimal point :-)

1/8th inch = 0.125in 1/64th in=0.015625in

0.15625in = 10/64in=5/32in

Sorry, just couldn't resist.

Reply to
I.Care

Sure did! Proofread the post too!

DS

Reply to
putt

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