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WD oil filtering

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Playfarmer

07-19-2005 18:43:53

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I ame rebuilding my Wd project tractor and was wondering..... .. I noticed that D-17's have a line that apears to filter all the oild before it reaches bearings. It lookd like a similar block to the Wd and I was wondering if anyone has tried to put this set up on a WD block to get 100% oild filtering?

Thanks for any ideas you may have.

Chuck

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Texas Denny

07-20-2005 09:33:38

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Re: WD oil filtering in reply to Playfarmer, 07-19-2005 18:43:53

I don't know what the setup looks like on a D-17 gas (mine is a diesel). I know that the WD had a partial filtering system. Oil was pumped to the bearings and filter simultaneously. Some goes to the filter, some goes to the bearings. You can find alot about it in the archives by searching for WIX filters.

I know a lot of folks have agonized about the WC/WD/C/CA/B oil filter system. Allis eventually determined full filtering was better and instituted the change on the D-17, I believe. However, WD, WC and WD-45 tractors have worked well with the original design for a half of a century. The engines commonly got 5000 (and more) hours between overhauls (ours did at least). Most people today are hardly using these tractors. We used to plow 14 hours a day with them and noone ever suggested the improvement. A typical year saw 1000 hours.

So, I think it is an improvement but hardly important enough to do as a modification.

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don dittmar

07-20-2005 04:32:04

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Re: WD oil filtering in reply to Playfarmer, 07-19-2005 18:43:53

The Wd was 201cid and the D17 was 226cid...a bored out version of the wd engine. The oil pump is driven off the backside of the cam(i think)and the output should go from the pump to the oil filter, meaning that the oil is filtered before it goes anywhere. I am not to familiar with the WD, so I could be wrong here....MAybe someone could help us out here.....

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DanD.

07-20-2005 10:04:09

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Re: WD oil filtering in reply to don dittmar, 07-20-2005 04:32:04

The WD engine is a 4" bore and a 4" stroke. THe WD45 and D17 also have a 4" bore and a 4.5" stroke giving the 226 cid. The oil pumps in all of these engines are driven by a gear off the middle of the camshaft and the oil pump is a gear type pump that sticks down into the oil pan. In the older bypass engines, the oil flows through a tube fom the pump and then into a passage in the block. From there, oil can flow two different routes. It can go to the oil filter(a little oil that goes this way is diverted to the rocker arms and governor and doesn"t reach the filter) and then immediately back into the pan or else it can flow to the cam bushings and cam shaft and from there to the main bearings and then to the rods. Early D17"s also had the bypass oil system until they were changed to the full flow system at serial number 24001. It is not practical to change form the bypass system to the full flow unless you happen to have a full flow D17 block lying in the junk pile and are looking for a project. I agree with the other post in that the amount of work any of these tractors sees today is miniscule compared to what they did in the past. Change the oil and filter once in a while and they will run another 50 or 60 years or 70 years.

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