Trico wiper motor SF 583 gasket pattern |
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JeepSaffer
Member Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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Posted: 31 May 2018 at 10:09am |
The original Trico vacuum wiper motors for CJ2A jeeps were the SF 583 models.
The gaskets between the upper and lower halves are very intricate, and seem to be hard to come by. I have seen some on eBay but they are pricey at around $20 per gasket set. They come in two identical halves suitable for a single motor. I have bought a NOS set and have scanned them, drawn them up in CAD, and printed them to pdf at 1:1 scale. If you need the pattern to try to cut them out yourself, here it is. I have test printed them myself from pdf and they are a very, very close match when I overlay the originals on the print copy. They are certainly within the tolerance that an average person could wield an exacto knife! Just make sure that you print at 1:1 scaling, or 100% scaling, as your printer might try to scale the native A4 page size to something else on your printer, like 8.5" x 11". As long as you print to 100%, or untick the "scale to fit" option, you should be fine. A measured dimension is provided on the drawing so that you can check your print before you start cutting. Two gaskets are required for one motor. I believe they should also fit the later SF 616 and SF 634 models found on later jeeps, but I can't confirm this. The original gasket measures 0.4mm or 1/64" thick. Good luck. Let me know if you manage to cut one and if it fits! Mike Edited by JeepSaffer - 01 June 2018 at 7:53am |
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1948 CJ2A #204853 in South Africa
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athawk11
Member Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4145 |
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I'm just gonna say it...
"You're a freakin' Rock Star!" Couldn't pull this off myself, so ended up using the originals that were in marginal shape. Thanks!!! Tim
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1- 1946 CJ2A
2- 1949 CJ3A |
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otto
Member Joined: 26 Feb. 2012 Location: Orygun Status: Offline Points: 2241 |
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What type and thickness of gasket material do you select for this application?
Thanks
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47 CJ2A w/fuel injected boat engine
48 CJ2A 64 Ford Econoline Travelwagon If you can't get there in a Jeep, get a motorcycle! |
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JeepSaffer
Member Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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Hi Otto,
I measured the thickness of the NOS gasket at 0.4mm, which would make it 1/64". I don't know enough about gaskets to know what the NOS one is made of. However the simple function of this gasket is seal the wiper motor top and bottom to be able to keep vacuum within the motor and drive the paddle. I would say almost any gasket material would work, if it is the correct thickness. Lightly coat both sides with a very thin smear of light grease before installing, not enough to squish out and block any of the passages in the motor body, but enough so that the motor housing forms an airtight seal against both sides of the gasket. You should be good to go! Mike
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1948 CJ2A #204853 in South Africa
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JeepSaffer
Member Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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Haha, glad to help Tim! I actually remember one of your posts from some time back where you lamented the high price of the wiper motor gaskets on eBay, and I made a mental note that if I ever found myself with a NOS set I would replicate it in CAD and post the results to the forum. Well, here you go Sir...
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1948 CJ2A #204853 in South Africa
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srlbotanical
Member Joined: 03 July 2017 Location: Saranac MI Status: Offline Points: 395 |
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I was just directed here from my own thread.
Thanks for taking the time to do this! I'm going to try and make my own gaskets. |
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Steve
1948 CJ2A - The Good Dog 1997 TJ - The Trail Rig 2001 XJ - The kids ride |
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windyhill
Member Joined: 14 Mar. 2009 Location: North East PA Status: Offline Points: 1395 |
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'48 CJ2A
'53 CJ3B '59 CJ6 '65 CJ5 '67 CJ5 |
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JeepSaffer
Member Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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Glad to hear the patterns have found some users!
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1948 CJ2A #204853 in South Africa
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JeepSaffer
Member Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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Let me know if the pattern "as cut" actually works. I can modify the pattern slightly if there is an obvious problem.
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1948 CJ2A #204853 in South Africa
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Willy M
Member Joined: 18 July 2017 Location: Dyer, TN Status: Offline Points: 233 |
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Thanks for the pattern!
I used to make gaskets for old Amal Monobloc carbs on British motorcycles out of paper bags way back when. They worked good for me and I bet paper bag gaskets in this would work well with your light smear of grease. You want the paper to soak up something to swell a little for compression when tightening the screws. I'd use just enough grease/light oil to wet the paper.
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Duck001
Member Joined: 23 Sep. 2014 Location: Ontario Status: Offline Points: 30 |
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I was happy to find your pattern for the wiper motor gaskets. My daughter helped me to convert your .pdf to a .svt format and then cut the gaskets (Fel-Pro gasket paper) on her craft Cricut machine. Came out perfect. We did have to edit the design slightly to eliminate one small hole that did not appear in my original gaskets.
This could be a great way to produce some obscure or less common gaskets that are hard to come by. Edited by Duck001 - 14 Dec. 2023 at 7:44pm |
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JeepSaffer
Member Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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So glad this pattern is still working out for people!
And especially glad to hear that it has been proof tested and works! Edited by JeepSaffer - 16 Jan. 2024 at 10:05am |
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1948 CJ2A #204853 in South Africa
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