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05-22-2014, 10:21 AM | #1 |
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1940 Steering Box
I have what I believe is a 1940 steering box that I want to put in my 35' but I don't know how to identify it. The only casting # I see on it is a 10 (see pics) and the pitman arm has a casting # 78-3590-M7. Also when I turn the shaft I can feel the bearing, it is not smooth. I am guessing it has a bad bearing or something else? I figured I would take it apart to inspect. Can anyone give me some advice as to what to look for and the proper setup, figured I would rebuild it. Also I notice on my 35' box it has a collar that bolts onto the top of the box that the column tube clamps to and the 40' box has it cast into the housing. I assume my column tube will clamp on the 40' box?
Thanks Dan Last edited by Mr. Will; 05-22-2014 at 10:43 AM. |
05-22-2014, 11:22 AM | #2 |
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Re: 1940 Steering Box
It appears earlier than a 40 as it has the light switch set up. It should be 37-39. The tube will clamp up.
They are easy to work on. Remove the pitman arm with a puller. Do not beat on it. remove the top cover and the sector shaft will come out the top. Remove the switch parts and the bottom cover and the shaft will try to come out. The lock coller will hold it from coming all the way out. grind the edges of the screws holding the coller and drive it off. A screwdriver used to spread it some helps. The big bearing cup at the bottom is not available but the rest is. Check the shaft length. I hope it is the same as you 35. They can be shortened. |
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05-22-2014, 12:45 PM | #3 |
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Re: 1940 Steering Box
In addition to checking the shaft length compared to your '35, also check to see if the inner hole in the shaft is large enough to accept the rod on your '35 horn light switch. When I have rebuilt these '37-'48 steering boxes to use in my '35's, I have pressed the worm gears off the shafts that were too long or would not work for other reasons, and then pressed the worm onto a '35 shaft, so that all the other '35 column components (column tube, steering wheel, column drop, horn light sw. rod, and locking collar) would all bolt right back in place. Rebuilding that '37-'48 box yourself is not that difficult. I have a good magazine tech article on rebuilding these '37-'48 steering boxes. If you would like a copy, send me a pm with your email address.
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John "Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein Last edited by JM 35 Sedan; 05-22-2014 at 02:48 PM. |
05-22-2014, 01:36 PM | #4 |
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Re: 1940 Steering Box
The lower bearing race 68 1553 come from Macs 48 mm x 22 wide this maybe wider than you need but could be modified they also show a pre 40 .1553.that maybe the narrow one .
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05-22-2014, 01:42 PM | #5 |
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Re: 1940 Steering Box
Andy the screws holding the collar are recessed in my unit and I haven't any luck breaking them loose with a screw driver or small chiesle. Thought about trying to drilling them out?
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05-22-2014, 03:32 PM | #6 |
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Re: 1940 Steering Box
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05-22-2014, 03:42 PM | #7 |
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Re: 1940 Steering Box
You can drill the screws easy there quite soft. You may need to relocate the coller to match the distance from box to dash mount, and clocking.
Martin. |
05-22-2014, 04:01 PM | #8 |
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Re: 1940 Steering Box
On the one I did recently, the screws came out after a little lick with a grinder where the thread had been peened over.
Mart. |
05-22-2014, 04:24 PM | #9 |
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Re: 1940 Steering Box
I use a Dremmel tool with a small burr or a cut off wheel to grind away the peend over material. I have always been able to reuse the screws.
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05-22-2014, 10:47 PM | #10 |
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Re: 1940 Steering Box
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05-22-2014, 10:49 PM | #11 | |
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Re: 1940 Steering Box
Quote:
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05-22-2014, 10:50 PM | #12 |
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Re: 1940 Steering Box
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05-23-2014, 08:14 AM | #13 |
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Re: 1940 Steering Box
Also, the mounting holes on the box are oriented differently for '37/up. Some will drill/elongate the '35/6 to work, but changing to a '37/40 bracket is cleaner. If you ever get over my way I've got a new one if you want to do it that way.
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05-23-2014, 09:03 AM | #14 |
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Re: 1940 Steering Box
The bolt pattern on the '35-36 frame mount is different than the '37-40. You will need a '37-40 frame mount. You will also need to retain the '35-36 pitman arm. The '37-40 pitman hangs down to low...
I put '40 steering gears in my '36 over 50 years ago, like adding power steering to he car in lieu of the "armstrong" 36 steering..
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05-23-2014, 09:27 AM | #15 |
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Re: 1940 Steering Box
The guys are correct about trying to use a '35-'36 frame mounting bracket by drilling extra holes in various places or elongating existing holes. We tried this when we put a '37 box in a '36 Phaeton and everything we tried would not allow the box/column to be in the correct position. Using a '37-'40 frame mounting bracket works much better. Bob Drake has remade this '37-'40 bracket and sells it for ~ $30/$35. It bolts/rivets right back into the original mounting holes in the frame.
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05-23-2014, 12:52 PM | #16 | |
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Re: 1940 Steering Box
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05-23-2014, 12:55 PM | #17 |
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Re: 1940 Steering Box
Bob, Its Dan I was going to buy your bracket but found I had the bracket remember.
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05-24-2014, 12:57 AM | #18 |
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Re: 1940 Steering Box
[QUOTE=JM 35 Sedan; I have a good magazine tech article on rebuilding these '37-'48 steering boxes. If you would like a copy, send me a pm with your email address.[/QUOTE]
__________________ John John, thank you for your generous spirit in allowing others of us to add our names to your offer. Received and readable. Thank you again. |
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