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05-08-2015, 02:47 PM | #1 |
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Possible rear spring perch problem.
Finally doing some deep cleaning on the original 29 Fordor I picked up in December. After removing the globbed on coating of dirt and grease from everything under the car, close inspection revealed what you see here, same on both sides of the rear spring.
Supposedly, the car has never been apart. Either something is missing, or the spring perches are toast. Any opinions? Going to discuss this with the club Model A guru and plan a strategy on this. |
05-08-2015, 02:59 PM | #2 |
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Re: Possible rear spring perch problem.
Shackle may have worn through the bushing and into the eye of the trumpet housing.
The solution is major - remove the worn segment of the eye by slitting (slotting?) Then weld back up using a copper chill (graphite works I'm told) and re-machine for the bushing. Unless you have a spare and good shape trumpet sitting around. Back in my day I found the bushing worn through and started into the eye strap. I put in a new bushing and have run it since (and carried a load in the little pickup) with no problem. But this a matter of how far you want to push the envelope. JoeK
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05-08-2015, 03:28 PM | #3 | |
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Re: Possible rear spring perch problem.
Quote:
You won't need to slit the bushing to remove it, because the wear has already done that. Weld up the worn part of the perch as suggested, or you might even get by with just JB Weld and a new bushing if the wear is slight. Of course a good spring spreader is needed for this job. |
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05-08-2015, 06:05 PM | #4 |
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Re: Possible rear spring perch problem.
Good info. Thank you Joe and Tom.
Scary part is...... I have driven the car about 120 miles since it came home. It drives so nice (like REALLY nice), so I never expected to find anything so worn as this. But, it just goes to show how tough a Model A can be. I sure as heck won't be driving it NOW until this gets fixed. I didn't see how bad it was because it was hidden beneath a layer of dried greasedirt. |
05-08-2015, 07:17 PM | #5 |
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Re: Possible rear spring perch problem.
I would advise that you obtain a proper rear spring spreader before you attempt anything. With the frame sitting on jack stands and a floor jack under the banjo, spread the spring and remove the shackles, which appear to be worn. Replace both the shackles and the bushings. Be careful working around a rear spring. They can be lethal.
Tom Endy |
05-08-2015, 07:18 PM | #6 |
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Re: Possible rear spring perch problem.
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You may have the same situation.
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05-08-2015, 07:52 PM | #7 |
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Re: Possible rear spring perch problem.
The perch can be repaired. I take the axle housings to a shop where they insert a bronze rod the size of the perch before the bushing is installed and weld up the void. The weld does not stick to the bronze.
Tom Endy |
05-08-2015, 09:20 PM | #8 |
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Re: Possible rear spring perch problem.
Excellent. Thank you very much.
Don't worry, I have worked enough with the rear spring on my Tudor to have a healthy respect for the energy contained within. Luckily, our club has the most amazing Model A guru that goes out of his way to help everyone. I will consult with him before even considering starting on this. If it ends up that the perches are damaged, then I am going to seek repair of the parts on the car rather than replacing since this is an all original car. |
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