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Calling Case 504B diesel experts!


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  #1  
Old 08-15-2019, 09:57:33 PM
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Default Calling Case 504B diesel experts!

Help me!
I am working on an early 70's case wheel loader with the 504BD non-turbo diesel engine. The loader model is MW20BPL.
The #6 head gasket blew out at the back side, visibly hanging out between the deck and the head.
Pulled the head and ordered a gasket set, the part number is FP-A189545.
The fire ring in the gasket is too small to fit over top of the liner?
Not by much, maybe .075. Does anyone know if the turbo head gasket is different than the non-turbo?
The only gasket available is for the turbo engine, I would not think that the liners would be different?
Thank you in advance.
Pictures to come.
Mike

Last edited by Mikey4026; 08-15-2019 at 10:23:08 PM.
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Old 08-15-2019, 10:27:18 PM
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Default Re: Calling Case 504B diesel experts!!

I'm thinking that they gave you a set for the older smaller bore engine 471? The engines are similar but smaller bore. Bottom line, if it don't fit, it's the wrong one. Not sure about the internal dimensions of the sleeve top, as the ones we have, haven't been apart as long as we have had them.
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Old 08-15-2019, 10:49:38 PM
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Default Re: Calling Case 504B diesel experts!!

OK, got out the caliper!
The ID of the old gasket measures 5.215, the new measures 5.175. So the difference is only .040 in diameter, just enough that the new gaskets will not fit.
I double checked the part number of the set purchased, it is listed on FP Diesel's website as the correct gasket for the 504 natural and turbo.
So, I am at a loss to understand what is going on.
Regards
Mike
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Old 08-15-2019, 11:27:34 PM
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Default Re: Calling Case 504B diesel experts!!

Not that it's much help, I've run into similar parts issues where the after market parts are close but not exactly there as to fit. Have you tries a genuine Case IHC Construction equipment dealer for parts? They may have the correct fit part or maybe a better answer to the issue. Once had a ring job for a IHC Cub tractor, the owner had gotten parts from a local Nappa store. They told him that the replacement rings would be a bit tight but would soon wear in. That got my attention, so we put one piston in and even though the gap was ok, the tension was so stiff that I could barely turn the thing with just the one piston in. No way was that acceptable, and they claimed that was the right set and no others aviliable. I went to IHC dealer and got the correct set and guess what , no problems. Dealer had had that experience before and was aware of the after market issue.
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Old 08-15-2019, 11:30:46 PM
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Default Re: Calling Case 504B diesel experts!!

I think there was some changes on the cylinder liners on some of the Case engines. There is a difference in the top of the liners. The new gasket's fire ring has to fit over the highest part of the top of the liner. The highest part of the liner has to go inside the fire ring of the gasket. Is your loader a W 20 and is the inside diameter of the liner 4 5/8"?
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Old 08-19-2019, 01:00:28 PM
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Default Re: Calling Case 504B diesel experts!

Still fighting this battle. Appears the is a serial number break after 2539000, mine is much lower number, 1033930 and has a larger fire dam. I have contacted FelPro, their 9069PT looks like in may be the correct size. We shall see? Thanks all for your help.
I will update after the FelPro arrives
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Old 09-05-2019, 08:36:01 AM
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Default Re: Calling Case 504B diesel experts!

Thanks to all. FelPro makes a gasket that fits. Seems there was an early and late design engine with different fire dam dimensions. Information on the early design head gasket is lacking. The FelPro gasket fit perfectly, loader back together and running fine.
Mike
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Old 09-05-2019, 09:51:27 PM
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Default Re: Calling Case 504B diesel experts!

Thanks for posting this, we all learned something once again.
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