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not sure what I have

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Jerry Huettl

03-24-2003 19:28:38

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Have a WD45 with serial #WD18690, Engine number is 45-47802G. The repair manual we have says there is a difference between the engines after engine number W45FG1001. As you can see our number is nothong like this so we don't know if it is before or after. The engine was rebuilt by someone, but had bad oil pressure and and probably dirt in it when reassembled. All main bearings, rod bearings and can bearings are now shot. The Main caps had one shim under on of the bolts. THis would seem to indicate an earlier engine, but not logical to have just one shim and only under one bolt.

Can anyone help me with identifying this engine so we get correct parts and rebuild it properly?

Have thought about just assembling by using plastiguage to check mains and rods. Would .002 be about right?

Thanks so much in advance.

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03-24-2003 20:22:29

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 Re: HELP - not sure what I have in reply to Jerry Huettl, 03-24-2003 19:28:38  

WD45s started with S/N 146,607. Maybe you have a WD? or WD with 45 engine. WD engine has a large rectangular plate on the right side of the block. WD engine is 201 cid and the WD45 engine is 226 cid.

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Jerry Huettl

03-24-2003 20:35:58

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 Re: Re: HELP - not sure what I have in reply to Eldon, 03-24-2003 20:22:29  
The tractor is a WD as best as I can tell from the info on the web site, just not real sure it is a WD engine, but believe it to be. According to serial WD18690 it shpuld be 1954 model. Have the original owners manual and registration papers fron the dealer

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03-24-2003 20:46:29

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 Re: Re: Re: HELP - not sure what I have in reply to Jerry Huettl, 03-24-2003 20:35:58  

186,90x would make it a '54 WD45

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03-24-2003 20:42:57

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 Re: Re: Re: HELP - not sure what I have in reply to Jerry Huettl, 03-24-2003 20:35:58  

that S/N would make it a 1949 according to my reference book....unless you are missing a last digit. The sure way to spot a WD motor is by the large plate on the right side of the engine block.

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Jerry Huettl

03-25-2003 06:23:24

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 Re: Re: Re: Re: HELP - not sure what I have in reply to Eldon, 03-24-2003 20:42:57  
Eldon - yes, after looking it is a WD engine. Still can't figure out what is the deal with the main bearing shims being only on one side of the bearing cap. From best i can tell there shouldbe 4 shims under each side of the cap. Still wondering if the engine I have is the "older" or "newer" style. Mostly confused as the engine serial number does not conform to what the repair manual says.

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Jerry Huettl

03-25-2003 06:25:24

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 Re: Re: Re: Re: Re: HELP - not sure what I have in reply to Jerry Huettl, 03-25-2003 06:23:24  
Eldon - just reread the last message and realize made an error. From looking at the engine it is a WD.

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Brian G. NY

03-25-2003 07:20:13

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 Re: Re: Re: Re: Re: Re: HELP - not sure what I have in reply to Jerry Huettl, 03-25-2003 06:25:24  
As Eldon says, WD18690 would make the tractor a '49 WD. I too, would guess you're missing a digit. If you added a digit to the end; eg: WD186900, it would become a '54 WD-45. The fact that the engine serial number is prefixed with "45" indicates it is a WD-45 engine. I have been accumulating Tractor/Engine serial numbers for some time and your engine number would also place the year as 1954. According to my A-C repair manual, the WD-45 does not use shims on the rods as the WD does. Rod bearing clearance is attained with undersize bearing inserts. I found reference to the Engine #W45FG1001 in the I & T manual where it is talking about the change from shimmed to non-shimmed "Rod" bearings. I have no idea from where I & T got that odd serial number. Apparently, shims continued to be used for main bearing adjustment on WD-45 engines as they were on WD engines. I have yet to rebuild one of these engines (tho I do have one that needs it) so I can not give you any firsthand tips or advice. There are guys out there that do these engines all the time (for pulling as well as normal duty) and I would hope one of them would "chime in" here with more specific info.

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