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  #21  
Old 05-06-2018, 02:22 PM
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Quote:
Originally Posted by olds45512 View Post
I would think replacing the crank seal would be a pretty straight forward procedure. Remove the blower housing and then the flywheel and then replace the seal. I wouldn't repower the tractor over a crank seal.
I meant if it’s a bigger issue than just a seal, like a crack. I’ve never owned or worked on an Onan. Every engine I’ve ever worked on it’s right there and easy to get to but I’ve seen some things that looks like it’s a little more involved than that. I’ll see with mine eyes when I get it out and all the tin and parts out of the way.

The other thing I need to consider is if I want to use the 50C deck I can keep everything as is, but my 551 snow blower will (probably) not work right with the smaller PTO pulley because the blower will run slower. If I put the larger PTO clutch on I should be able to use the blower, but then the 50C becomes a problem, I could then use the GT48 or GT54 deck I have, but I really would those to stay with the other tractors. If the 50C works as well as the 44C I have tested with on my 1641 I will be happy with it. So many tough decisions...
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1912 with Kohler M18 engine repower, CI rear, 50C deck, 364 snow blower
IH Cub Original with deck
#2 cart
GREEN 314 with integral sleeve hitch, H2 and independent brake upgrade from a 317, and front hydraulic blade, 48" deck
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  #22  
Old 05-07-2018, 10:42 PM
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I worked on this a little this evening, removed the tins and I am currently stuck getting the PTO clutch off. I got the pulley off, and the plate that is bolted to the engine so everything is free but I can’t seem to get the magneto part off the crankshaft. There’s a sleeve or something on the shaft that won’t allow it to move. I tried tapping it, heating it, putting a wheel puller on and gently pursuading it. Won’t budge. So that’s where I left it at this point.

I’m beginning to think this is more than just a seal issue. The flywheel fan is completely clean of oil. But the top the engine shroud is, the breather assembly, and the rest of the entire engine is soaked. The crank case breather was disconnected from the intake and has a guaze looking thing zip tied over the end and it’s floating free under the intake. This looks to me like a crankcase breather issue and maybe a pushed out seal from that not working properly. Just a guess now.
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1912 with Kohler M18 engine repower, CI rear, 50C deck, 364 snow blower
IH Cub Original with deck
#2 cart
GREEN 314 with integral sleeve hitch, H2 and independent brake upgrade from a 317, and front hydraulic blade, 48" deck
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  #23  
Old 05-08-2018, 07:58 AM
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Steve, there is a reed valve under there that may be an issue. The stainless steel wool stuff is probably what you see. Do you have the manual for the B48G?

I'll see if I have any pics of the pto assembly that may help too.
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  #24  
Old 05-08-2018, 08:42 AM
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Oak, I'll take some pictures this evening to add to this. I didn't have my phone handy to snap pictures last night, my wife had it...

I have the manual for the B48G that I downloaded here printed out.

I had an issue with a Kohler Series II breather pumping oil right up into the carburetor, this looks like a similar setup. So here is a detailed description of what I have going on. There is a tube off the top of the breather (fat on one end stuffed with what looks like a scouring pad from the grocery store) and the other end is supposed to go into the base of the air filter assembly, but it's just lose under the air filter assembly, and it has the end stuffed with gauze and gauze wrapped over the end with a wire tie around it to hold it all in. I'm no expert but I'm thinking there was some sort of issue there with the crankcase breather that was attempted to be MacGyver'd to keep oil out of the intake. The hole in the bottom of the air filter assembly where this tube goes had a bolt with washers to take up the space and close it off. So, the question is if the crankcase breather is restricted would that cause crankcase pressure to build and blow out a seal assuming everything else is working properly? I know with blowby this probably would certainly be an issue, but if no blowby would that still be an issue? If it's a blowby situation then this engine is toast, I have no plans to rebuild it. The only place I do not see oil is in that scouring pad, it's pretty clean. I haven't even gotten to the seals yet because of the said PTO removal issue, and the engine has not been pulled yet to get the flywheel end apart because I can't lift much right now.

*EDIT*
I am not at home so I can't take a picture, but here is a webfind picture of the PTO setup I have, circled is the piece that won't budge to get the rest of the PTO assembly off.
717-3002 FRONT PTO ASSEMBLY.jpg
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1912 with Kohler M18 engine repower, CI rear, 50C deck, 364 snow blower
IH Cub Original with deck
#2 cart
GREEN 314 with integral sleeve hitch, H2 and independent brake upgrade from a 317, and front hydraulic blade, 48" deck
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  #25  
Old 05-08-2018, 08:38 PM
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Here are the pictures of all I was describing.

1CCEC2F0-1A0A-44A7-8DB0-839032193995.jpg

BCA5D41E-B1A1-410F-9D45-2CC2BA8CFC79.jpg

3B093758-7F2D-481A-A643-2FD38DFB73D4.jpg

AD9284C1-82EE-4568-A835-6B70466EDB5A.jpg

E0D617BD-0A48-455E-BE4A-510FD51399CA.jpg

954B3686-6153-46DB-A8FE-0069FEBD8C9F.jpg

2A6ED6D6-77D6-4948-83FF-A7C0BDAFAE78.jpg
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1912 with Kohler M18 engine repower, CI rear, 50C deck, 364 snow blower
IH Cub Original with deck
#2 cart
GREEN 314 with integral sleeve hitch, H2 and independent brake upgrade from a 317, and front hydraulic blade, 48" deck
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  #26  
Old 05-09-2018, 06:33 AM
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That looks correct except for what's on the end that goes into the bottom of the air cleaner end. Is the tube broken on that end?

The manual on here isn't very helpful. Here is a better one. http://www.mytractorforum.com/images...6_18_20_24.pdf
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  #27  
Old 05-09-2018, 06:56 AM
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Thanks oak. Definitely a better manual. I downloaded it. The tube is not broken. It’s just not where it belongs and it was made to be that way.

I did get the PTO clutch off.
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1912 with Kohler M18 engine repower, CI rear, 50C deck, 364 snow blower
IH Cub Original with deck
#2 cart
GREEN 314 with integral sleeve hitch, H2 and independent brake upgrade from a 317, and front hydraulic blade, 48" deck
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  #28  
Old 05-09-2018, 07:41 AM
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It must be up in the air cleaner and whatever is on the end doesn't belong either. It should be like this.
DSCN2086.jpg

Gary is a good guy to deal with if you need some parts.
https://www.ebay.com/itm/REPLACES-ON...4AAOSwxH1T2Nms

Pretty hard to beat this price if you need some gaskets.
https://www.ebay.com/itm/Replacement...taUyV9&vxp=mtr
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  #29  
Old 05-09-2018, 08:00 AM
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Yeah, I knew it wasn’t right as soon as I saw it and I see where it goes. I’m just wondering why it was that way, someone did that on purpose. I’m guessing part of the problem is the breather and they did that to work around it.
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1912 with Kohler M18 engine repower, CI rear, 50C deck, 364 snow blower
IH Cub Original with deck
#2 cart
GREEN 314 with integral sleeve hitch, H2 and independent brake upgrade from a 317, and front hydraulic blade, 48" deck
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  #30  
Old 05-09-2018, 11:33 AM
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Also, I didn't take a picture of it, but in the other end (the fatter one on the engine side) has the metal filter material, it looks like the right thing in there, and it's really clean. I am hoping to get the engine degreased and pulled out of the tractor this evening so I can get the rest of the tin off and get in behind the flywheel to see whats up.
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1912 with Kohler M18 engine repower, CI rear, 50C deck, 364 snow blower
IH Cub Original with deck
#2 cart
GREEN 314 with integral sleeve hitch, H2 and independent brake upgrade from a 317, and front hydraulic blade, 48" deck
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