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Allis CA Seat Spring and Shock
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ACCA52 View Drop Down
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Joined: 26 Jul 2021
Location: Grove City PA
Points: 14 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ACCA52 Quote  Post ReplyReply Direct Link To This Post Topic: Allis CA Seat Spring and Shock
    Posted: 04 Oct 2021 at 7:41pm
Wanted to share my findings that may help other big guys. I weight 350lbs and the CA seat spring was just too soft. after experimentation i found Monroe shock 555002, Summit Racing 2.5id 12inch unspring length coil over 110lb spring are a good combination. the original spring caps were too small for the spring so i heavily modified some qa1 aluminum flat spring caps to work, but probably would have been better off making something out of steel. Originally i tried 175lb spring but it was way too stiff, did not compress at all with me in the seat.
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PaulB View Drop Down
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 5092 		Post Options Post Options   Thanks (0) Thanks(0)   Quote PaulB Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2021 at 6:56am
If you have a CA operators manual, it shows the 2 positions for the stock seat shock/spring mount for light/heavy operators, however I think it is fair to say the 350Lbs is an overload for the stock parts. 
If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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Dale (Stonelick) View Drop Down
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Joined: 13 Jun 2019
Location: Stonelick, Ohio
Points: 182 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Dale (Stonelick) Quote  Post ReplyReply Direct Link To This Post Posted: 05 Oct 2021 at 5:15pm
I installed a Harley shock on my CA.  Bought a new pair in the box off CL for $20 - Progressive Suspension 412-4037C 412 Series (Chrome) Harley 11.0".  Had to modify the top and bottom mounting bolts a little.  Seems to work well for me, but don't weigh that much.
1951 CA - 1944 C - 1949 B - Kubota M6800
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