Farm Equipment - 7030 trans/rear end problems

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7030 trans/rear end problems

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=41176
Printed Date: 29 Aug 2025 at 3:50am
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Topic: 7030 trans/rear end problems

Posted By: Matt80t
Subject: 7030 trans/rear end problems
Date Posted: 26 Nov 2011 at 11:50pm

I've go a 7030 that is pumping fluid from the transmission to the rear-end. I'm a diesel mechanic and have 14 years experience in tractor /trailers but little or no eperience with farm tractors. Frankly, almost all of my tractor expreience has been on a john deere pulling tractor.

I'm assuming that there is a bad seal between the transmission and rear-end but it will fill the rear-end till it overflows which makes me think that its not a seal since the fluids should equalize between the two. Anyway, before I tear it apart I was hoping for a little input from someone who has had this experience. I do have an original 7030 Allis-Chalmer service manual but I'd like a little direction before I start working on it.

Replies:

Posted By: MACK
Date Posted: 27 Nov 2011 at 6:55am

It is the seal in the gerotor pump if it does it only running. Most likely spun the bushing through the seal. Pull all 3 pumps out the bottom. Not a big job but oiley and costly. Be a good time to replace the seal on pump drive shaft. MACK