Farm Equipment - WD restoration

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WD restoration

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=180264
Printed Date: 30 Oct 2025 at 6:28pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: WD restoration

Posted By: Huolti
Subject: WD restoration
Date Posted: 02 May 2021 at 2:05pm

Drained oil out of differential and pto housing. Want to refill now so is everything filled by filler plug next to hydraulic dipstick. There is another plug farther back towards the differential also. What is it for? Do you just fill to plug level or is there another way to check level?
Thanks

Replies:

Posted By: DrAllis
Date Posted: 02 May 2021 at 4:14pm

FILL THEM BOTH FULL !!! with the same kind of oil. You should have removed three drain plugs starting at the PTO box and work to the rear. Takes about 4 gallons total.

Posted By: SteveM C/IL
Date Posted: 02 May 2021 at 9:59pm

Those 2 plugs cover the same lube level but if you try filling through just one,it will take a long time because of a separate wall supporting shafts inside and the oil has to trickle through bearings. Fill to top then plug. You can safely use modern trans/hyd fluid with 821 specs.

Posted By: allischalmerguy
Date Posted: 03 May 2021 at 9:12pm

Get a owners manual for the WD. It is helpful

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It is great being a disciple of Jesus! 1950 WD, 1957 D17...retired in Iowa,

Posted By: Huolti
Date Posted: 05 May 2021 at 3:41pm

I have a manual but I could not see anything in there about fluid levels.Just tells capacities.