Brake pedal Question

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Model T Ford Forum: Forum 2012: Brake pedal Question
Top of pagePrevious messageNext messageBottom of page Link to this message  By lorenzo leon on Monday, December 17, 2012 - 10:10 pm:

When I use the brake pedal on the 1912 i get a crunch sound
At first it sounded like differential skipping gears .like worn washers
but it also sounds like tranny .
everything is ok ...low ..reverse..any ideas
Thank you


Top of pagePrevious messageNext messageBottom of page Link to this message  By Matthew David Maiers on Monday, December 17, 2012 - 10:44 pm:

my t will groan a little from the rear end when i apply the brake, it certaily could be that your washer have let loose in the rearend


Top of pagePrevious messageNext messageBottom of page Link to this message  By Peter Claverie on Monday, December 17, 2012 - 10:50 pm:

I have always thought that you potentially put more torque strain on the ring and pinion in the rear end when stopping, than when starting up.

If I'm right, then the noise you hear could certainly be the gears in the diffy slipping.

If it is, you're getting closer and closer to the awful day when you step on the brakes and keep going.

I'd say you should immediately open up that rear end and make sure.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Keith Gumbinger, Kenosha, WI on Monday, December 17, 2012 - 10:54 pm:

I agree with Matthew. If you still have babbitt thrust washers in your rear axle, or if you don't know if they've been replaced with bronze thrust washers, that's the first thing to check.

Many years ago before I knew better, I had babbitt thrust washers break while on a 5 day Model T tour. I also couldn't tell if the noise was coming from the rear end or the transmission, but on the advice of more experienced tour members, I took the rear end apart and there was the babbitt all broken up in the bottom of the differential.

I strongly recommend that you Start there first.

Keith


Top of pagePrevious messageNext messageBottom of page Link to this message  By lorenzo leon on Tuesday, December 18, 2012 - 11:19 am:

Thank you ..will do


Top of pagePrevious messageNext messageBottom of page Link to this message  By Hal Davis-SE Georgia on Tuesday, December 18, 2012 - 06:28 pm:

Of course, the old "jack it up and slide the axle" test might be revealing, as is checking for chunks in the rear end oil, but if you don't know that there is definitely bronze thrust washers in there, then a tear down is definitely in order, no matter what these other tests tell you.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Craig Anderson, central Wisconsin on Tuesday, December 18, 2012 - 07:54 pm:

The "slide the axle" thing will indicate only that something might be haywire with the axles or differential but won't tell if the upper driveshaft bronze bushing flange is worn thin.
It's a good place to start though......and easier...... :-)


Top of pagePrevious messageNext messageBottom of page Link to this message  By Steve Jelf, Parkerfield KS on Wednesday, December 19, 2012 - 12:32 am:

Pictures & rear axle introduction:

http://dauntlessgeezer.com/DG79.html.


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