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04-24-2024, 08:21 AM | #1 |
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Removing perch bolt for repair
I need to remove the pass. side perch bolt to make a repair to the shock mount.
The car is a 35 Coupe with split wishbones. I have the car on a 4 post lift. I started to press the pin out and it's moving without a major fight because I greased it when I installed it 10 years ago. Question is do I need to worry about anything moving? Should the car be jacked up from the frame or axle to take the weight off or is it ok resting on the wheels? The axle is still attached to the spring. Thanks Joe |
04-24-2024, 08:37 AM | #2 |
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Re: Removing perch bolt for repair
The car would be lifted by the frame with the axle on stands if I were doing it . Depending on your spring and shackle arrangement the spring may be under some tension when you remove the shackle. Tim
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04-24-2024, 09:18 AM | #3 |
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Re: Removing perch bolt for repair
Be sure to follow the above advice and have "no load" on the axle or spring.
I am not sure of how the spring attaches on a 1935 Ford but you might want to use a spring spreader to "unload" the spring to take lateral pressure off the perch bolt thereby making it easier to remove and reinstall. Last edited by 19Fordy; 04-24-2024 at 09:50 AM. |
04-24-2024, 09:31 AM | #4 |
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Re: Removing perch bolt for repair
Follow the advice of pistonbroke and 19Fordy.
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04-24-2024, 09:33 AM | #5 |
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Re: Removing perch bolt for repair
Great thanks everyone!
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04-24-2024, 11:52 AM | #6 | |
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Re: Removing perch bolt for repair
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Quote:
Coop . |
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04-24-2024, 05:18 PM | #7 |
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Re: Removing perch bolt for repair
If it's still a stock 35 spring it will be attached to the wishbone in front of the axle so it will probably have some tension on it. Use a spring spreader to hold everything in place or porta power etc.
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04-24-2024, 05:36 PM | #8 |
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Re: Removing perch bolt for repair
V8 makes a good point. When I replaced my perch bolts and axle I did as pictured below. However, if you can relieve the pressure on the perch bolts with the wishbone in the car it would be nice. The C-clamps in the photos were used as a safety precaution in case something "sprung loose".
Spring spreader is homemade and much stronger than needed. Last photo shows reverse eye spring where I also double nutted the perch bolt so I could use it to jack up the car without damaging the perch bolt threads. Just seemed like a good idea. Last edited by 19Fordy; 04-24-2024 at 05:52 PM. |
04-26-2024, 10:23 AM | #9 |
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Re: Removing perch bolt for repair
Another thing to consider is using some big C-Clamps and then slowly disassembling the spring pack - such that only the main leaf is attached to the perches.
This usually takes the vast majority of the load off the spring - making the rest a lot easier to work with. I would roll the whole assembly out from under the car . . . making everything a lot easier and safer to work on. |
04-26-2024, 11:38 AM | #10 |
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Re: Removing perch bolt for repair
This is how I remove shackles. I put the car on jackstands and put floor jacks under the spring ends. If you jack one up so the shackle is level you will be able to jack the other one up until the shackle is not loaded. You can use wood blocks to level the static end also. I have done this on front and rear springs. I got rid of my spring spreader.
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04-26-2024, 03:02 PM | #11 | |
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Re: Removing perch bolt for repair
Quote:
I started to press the perch bolt out and before it pass the bottom of the wishbone, I installed a similar sized bolt up through the hole to stop that from happening. When I reinstalled the repaired perch bolt it went in with little resistance. There's a balance of the position of the axle up and down and how much pressure is applied to the wishbones. It was fairly easy to accomplish. Thanks to everyone for their input and for making this a simple and safe repair! Joe |
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04-26-2024, 05:36 PM | #12 |
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Re: Removing perch bolt for repair
Joe, post photos of what you did, if you have them. Thanks.
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04-27-2024, 06:20 AM | #13 |
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Re: Removing perch bolt for repair
Here's what I got Fordy. I hope this helps
Thanks |
04-27-2024, 09:58 AM | #14 |
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Re: Removing perch bolt for repair
__________________
The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
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