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Car Forum / Ford / Ford Trucks / November 2006

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1994 F-150: Rumbling front brakes after brake job?

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James3678 - 10 Nov 2006 18:40 GMT
F150 1994 105K Miles, 6 cyl, ABS rear only

Several weeks ago, I began hearing rumbling from front end when brakes
were applied.  I figured it was time for new brakes and just finished
replacing rotors, pads, bearings, etc this morning.

BTW, new rotors were a good idea, one of the old ones looked
particularly bad.

Unfortunately, the rumbling is still there, about the same volume as
before, only when pressing the brake pedal

Stopping distance is normal.

When I first drove it down the street slowly, it was very quiet and
stopping was normal.  Got up to about 25 MPH and did some heavier
stops.  Felt a shudder/pop in the front end (once) and the sound
returned.  All in the space of 1/2 mile and five minutes.

Steering, tracking, etc seem normal.  Visually inspected rear brakes
and they seemed okay

Has anyone experienced this before?

Thanks for any experiences/ideas you may share.

James
Teddy Bear - 10 Nov 2006 19:13 GMT
> Has anyone experienced this before?
>
> Thanks for any experiences/ideas you may share.
>
> James

I'll assume you had the new races installed on the new rotors........

Ok, that takes a drive in shim with rubber, right? Did you lube the crap
otta them before you drove them in? Also, most people don't get their
bearing near tight enough.......You cinch them up real good with a wrench
while turning the rotor or wheel, hold it in place with your finger to keep
out the slack, back off a bit, and finger tight again as tight as you can
(Timken Manaul). Your 150 might even call for a torque. My f250 calls for 50
lbs..

HTH
lugnut - 10 Nov 2006 20:00 GMT
>F150 1994 105K Miles, 6 cyl, ABS rear only
>
[quoted text clipped - 23 lines]
>
>James

The pop when applying the brake along with a noise steers me
toward the strut bushings.  If the bushings are badly worn,
you can have metal to metal contact during braking which
transmits a lot of road noise.  Some of the early Explorers
had these symptoms on the right side because of heat damage
to the bushings before heat shields were installed on them
during recall.  The F series has the same system and they do
wear out.  Another check point is to be sure the pads are
snugg and fitted properly in the calipre and holder.

Lugnut
Teddy Bear - 10 Nov 2006 20:02 GMT
> On 10 Nov 2006 10:40:30 -0800, "James3678"
> The pop when applying the brake along with a noise steers me
> toward the strut bushings.  If the bushings are badly worn,
> you can have metal to metal contact during braking which
> transmits a lot of road noise.

Interesting as I have the same noise while turning slowly. What kind of job
is it to replace these??
lugnut - 10 Nov 2006 21:24 GMT
>> On 10 Nov 2006 10:40:30 -0800, "James3678"
>> The pop when applying the brake along with a noise steers me
[quoted text clipped - 4 lines]
>Interesting as I have the same noise while turning slowly. What kind of job
>is it to replace these??

It can be a bear of a job if you don't have a good jack and
stands.  An air wrench is really nice unless you are trying
to get into shape.  The axle has to be coaxed forward out of
the strut mount.  Most of the time, you will have to
disconnect the shocks and loosen the front strut bolt at the
axle to allow it enough movement.  I've done a couple of
them by removing the axle pivot bolt to just drop the axle
out of the frame on the jack.  It is not a complicated job
but, it can get physical until you figure out how to work it
smart.  It will sometimes fight back.

If you have this while turning, you may want to check the
frame crossmembers very carefully as some of them had to
have the rivits replaced with bolts because of working
loose.  There was a TSB on that also. Sorry, don't have it.
This is a job best left to someone equipped to grind the
heads off the rivits and drive them out.  My '93 had this
done in less the 10k miles under warranty.

Lugnut
James3678 - 10 Nov 2006 20:32 GMT
> F150 1994 105K Miles, 6 cyl, ABS rear only
>
[quoted text clipped - 23 lines]
>
> James

File this one under bozo.....

I put one of the brake pads in backwards.

Reversed it and all is well

Thanks for all the input.

James3678 (aka bozo)
lugnut - 10 Nov 2006 21:15 GMT
>> F150 1994 105K Miles, 6 cyl, ABS rear only
>>
[quoted text clipped - 33 lines]
>
>James3678 (aka bozo)

I don't even want to ask!!!  But, that seems like it would
be a problem.  Hope you didn't hit the rotor with metal.

Lugnut
 
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