Farm Equipment - Wd vs wd45 rear and transmission

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Wd vs wd45 rear and transmission

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=153431
Printed Date: 24 Aug 2025 at 10:10am
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Topic: Wd vs wd45 rear and transmission

Posted By: blue924.9
Subject: Wd vs wd45 rear and transmission
Date Posted: 27 Aug 2018 at 9:42pm

Wondering which is a stronger combination. I have heard the straight cut wd gears are stronger than the 45 gears and will not jump out of gear. My grandpa was told that 45 rear end and transmission is stronger. This would be for a wd pulling tractor.

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Replies:

Posted By: DrAllis
Date Posted: 28 Aug 2018 at 7:16am

Late WD/WD45 helical gear transmissions are STRONGER than the old straight cut gear transmissions. The early D-17's essentially had a WD-45 transmission in them. Low gear is a little slower in the helical gear tranny.

Posted By: MACK
Date Posted: 28 Aug 2018 at 7:23am

Dr. is right. Late WD/45 are a lot stronger. MACK