Trying to install my rebuilt ( Andy’s Shox) and there’s no way the links will fit. Shocks appear correct but I have about 9” between shock arm and mount. The shackle is also interfering with link (3”). Can anyone post a picture of a 39 shock mounted so I can see what’s wrong? I have not mastered posting pic on FB but can email. Thanks, Mark
39 rear shock problem
- Thread starter marko39
- Start date
drolston
Well-known member
The axel perch is at the top of the shackle and the spring eye at the bottom, right? Maybe post a picture.
the perch on mine is below the spring thus the interference and the 9" between shock arm and perch. i too thought it should be the other way but is not the perch part of the axle housing? i am sorry i cant post pic that is why i was asking for one. Mark
Marko,
I have attached three photos that I hope will help you. These are all different '40 body styles. And, although the shocks are different for concourse purposes, the size, shape, etc. is the same. They also mount identically to your '39.
Your 3" link is correct.
Please look at each photo carefully. I am willing to bet once you study them, you'll find the "fix" an easy one.
With no weight on the frame, the spread between the shock arm and link is a seemingly long distance. However, by rotating the arm down, the link can be installed. Rest assured I'd restored more than my share of '39 and '40 Fords.
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The problem is the perch is below the shackle and it should be on top. I think when I had everything apart 40 years ago I installed the bells on the wrong side. I am studying this to see if switching the bells will put the perch on top. Thanks for the pics Mike, but I couldn’t see the perchs. Mark
petehoovie
Well-known member
Looking at a 41 for comparison may be confusing to some as it isn't all that similar to a '39.
Marko, I managed to find another photo of a '40 I had restored. I think this one offers a fairly clear depiction of the area you are attempting to see. Yes?
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it is clear from pic that perch has to be above spring shackle but mine is below. center section is correct leading me to believe the axle bells with the perchs are switched. the left and right have different part #s so i may have made a rookie mistake years ago. how hard would it be to switch them with rear installed?
drolston
Well-known member
We really need to see a picture of what you have.
It is possible to switch axle housings with the rear end in the car. EXCEPT, for the fact that backlash (spacing) between the ring gear on the differential and the pinion gear in the center section is controlled by arranging the layers of gaskets between the housings and center section. That is tricky business and best done by someone with experience.
1940 rear axle pinion backlash - The Ford Barn
It is possible to switch axle housings with the rear end in the car. EXCEPT, for the fact that backlash (spacing) between the ring gear on the differential and the pinion gear in the center section is controlled by arranging the layers of gaskets between the housings and center section. That is tricky business and best done by someone with experience.
1940 rear axle pinion backlash - The Ford Barn
drolston
Well-known member
send to: dave.rolston@yahoo.com
drolston
Well-known member
Sure enough, your axle housings are switched left and right.
And for the record, the only relevant difference I see between your '39 and my '41 is that on the '39 the spring fits up inside the cross member and on the '41 it clamps to the bottom of the cross member
And for the record, the only relevant difference I see between your '39 and my '41 is that on the '39 the spring fits up inside the cross member and on the '41 it clamps to the bottom of the cross member
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