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Kwikway loader repair


gwiseman

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Having some problems with my loader last week; specifically pump started squealing, would struggle to lift the arms and curl the bucket. I removed the Agco / Legacy hood to inspect and found the pump coupling moves freely on spline shaftIMG_0766.thumb.png.ab56126237c6133890443057d7e7d000.png

Found the splines worn down inside the sprocket shaftIMG_0761.thumb.jpeg.7b3dc098f9e6b0fb217ee43d927d4e1a.jpeg

and 12 tooth sprocket shot as wellIMG_0763.thumb.jpeg.693f997a8d52ad7feb86934b61d86b76.jpeg

i have pieces of a Kwikway manual but not a full parts one. Of course this page is gone. Looks to be 12 links double 40 chain, 12 tooth sprocket, and 15 spline shaft coupler ~2” long. 

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Gene if the Kwikway route doesn't pan out you might look at Surplus Center.  They have  a variety of hardware that might match, but you would have to weld the pieces together.  Another one would be G&G Manufacturing, I think you have to puchase from a distributor as I don't think they sell direct.

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The Craigslist item is also available on eBay.  In my brief foray into making a (front) 540 RPM PTO for a Sunstar, those coupler components are available at various industrial sources.

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Hello, Surplus center has these pieces A 12 tooth 40 sprocket  2 needed and a splined shaft coupler 2 needed .

My thought would be to turn down the shaft coupler, to fit inside the sprocket  then weld the 2 together . 

this may not be compatible.  But worth a look.

Thanks Ken in Mi

 

 ://www.surpluscenter.com/Power-Transmission/Sprockets/Weld-On-Sprockets/12-Tooth-40-Pitch-Series-V-Weld-On-Roller-Chain-Sprocket-40V12-1-1979-12.axd

 

1" 15T Splined Coupling G & G Mfg 163-1615 | Keyed, Splined & Hex 1 Piece Solid Couplers | Shaft Couplers | Power Transmission | www.surpluscenter.com

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It is likely that the shaft on the hydraulic pump is straight and set up for a key.

I would consider another (Simplicity) splined PTO shaft for one side of the coupler and then figure out the pump side.  The pump is likely a Parker off the shelf equivalent.  My Sunstar (leaking) loader pump was a Parker and I found a near equivalent on eBay.

 

 

Edited by CarlH
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It seems to me that besides the obvious mechanical drive damage there must be causal issue on the hydraulic circuit side.  Binding pump, clogged filter, ??   Noise and overfilled oil indicate something.

Edited by CarlH
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@CarlH There may be something else happening. There is no hydraulic fluid filter on this unit. I too wonder if a relief valve is sticking in the valve body but I will wait till I get the pump coupling repaired and reinstalled to check the next problem. Mine is a sauer danfoss valve and I'd think parts would be readily available??

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The Legacy attachment IPL that I have shows both a filter and a Y-strainer for the Mfg 1692932 loader.  My Sunstar loader has both also.  Is the strainer plugged?

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Possible mis-alignment of the pump and engine? Those chain couplers aren't able to handle too much out-of-skew.

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On 6/19/2023 at 8:21 PM, Bill725 said:

Took your link and contacted the seller. He was on vacation across but he called me anyway. We set up terms so when he got home he called to let me know he'd received payment. Waiting on it in the mail now. Meanwhile new suction hoseIMG_0797.thumb.jpeg.0a815b25679016d5ae42084ec32c4073.jpeg

Cleaned & pressure checked relief valve and reinstalled hoses. IMG_0794.thumb.jpeg.9cdc02d38b2bde1ed85c19e216dcfa45.jpegIMG_0799.thumb.jpeg.79af0820199a6521bc75e105b33a1029.jpeg

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IMG_0819.thumb.jpeg.db40daa74ac67986d7c71e6920483ee5.jpegimage.thumb.jpg.e51de6bcc45c4e9cb33b60a496a824f1.jpg

I asked a lot of questions, read several loader filter threads, and received a lot of help from Simpletractors.com  friends. Sourced needed parts from Surplus Center and my stash, and mounted the needed filter. New suction hose sourced locally. 

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  • 2 weeks later...

I think I finished this fixit project - for the time being anyway. Thanks to all that I contacted and that responded to this thread. I reviewed, still made a mistake or two, and now have a working loader tractor again! I bought the part @Bill725 found above and although its a bit shorter than my original coupler, it worked.IMG_0835.thumb.jpeg.4b2bd01ca63d9ae5cf6305e2af0d3c70.jpeg I used bought couple new 12t #40 chain gears and welded together to mimic the original coupler and was going to use the 5/8" shaft gear (that came with the above coupling) but here is where my mistake occurred. I was having a tough time getting the gear onto the shaft. Used a file, sandpaper, etc and thought I had it right but I used a bit too much force and the pump shaft froze; new pump needed. I thought I'd found a Parker replacement on eBay but it was a 2 bolt rather than 3 bolt as my original. So back to Surplus Center where I'd purchased the filter, hose and fittings. IMG_0857.thumb.jpeg.8551d2e1e79d76b37e1ec50655142cea.jpegDecided on the .323 displacement 5gpm pump circled. Everything back together and the loader is performing very similar to before. IMG_0853.thumb.jpeg.774741a888d7103ff57e20f9c7920c80.jpegIMG_0851.thumb.jpeg.f093f1a030a94ddf12e960ea55620b35.jpegIMG_0858.thumb.jpeg.114e3deb2654638b7359b00b3fdc3f7b.jpegKwikway cheaped out on this loader setup IMHO; no filter, loosey-goosey pump attach point at front of the tractor, and a few other things. IMG_0862.thumb.jpeg.3064d1e4b4dc46eb0bc75be9a16b9690.jpegBut in reality its given a po and me several years of service and I hope to get a few more. Thanks to this site I was able to access info to get the job done correctly. If it happens again I am rethinking the double chain connectors. 

 

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