Farm Equipment - 7020 pto leaking

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7020 pto leaking

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=173838
Printed Date: 27 Nov 2024 at 11:28am
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Topic: 7020 pto leaking

Posted By: youngorange2000
Subject: 7020 pto leaking
Date Posted: 25 Aug 2020 at 10:14pm

my 7020 has developed a leak at the bottom of the pto shaft I dont see a way to get at the seal it has the reversible 540/1000 and it looks like its all internal?

Replies:

Posted By: Rusty Allis
Date Posted: 25 Aug 2020 at 11:16pm

I think you're right

check here

https://www.allischalmers.com/FORUM/7050-pto-breakdown_topic173717.html" rel="nofollow - https://www.allischalmers.com/FORUM/7050-pto-breakdown_topic173717.html

Posted By: Ron(AB)
Date Posted: 26 Aug 2020 at 12:25pm

I'm still tracking down parts for mine.

The seals you can get anywhere.

The cone bearings are cheaper at the dealer.

And if you need the internal shaft (it could be bent?)...go to a wrecker.

Also make sure the pto stub shaft on the outside is not bent or twisted too!

Posted By: bigal121892
Date Posted: 26 Aug 2020 at 6:01pm

I put new seals in one of our 7010's a number of years ago, follow the manual, not really a big deal. I would drain the oil and remove the bottom cover the night before, allows it to drip overnight.

Posted By: Lynn Marshall
Date Posted: 27 Aug 2020 at 9:21pm

I did one on a 7010 this week. The pictures show having the oil out, the drawbar off, PTO shield off, and the bottom plated removed. The lock wire and pin are then removed followed by loosening the castle nut. I use some long 7/16 bolts and the PTO shaft as a slide hammer to remove the 1000 rpm shaft. Let the gear drop onto something soft. I then reach up into the housing with a long screwdriver and pop the snap ring (clip) out of its groove. Remove the thrust bearing and washer off of the front face of the 540 gear so that it doesn't get damaged. Use the long bolts and reversible PTO shaft again to pull the 540 hollow shaft out. Clean everything up. Refresh the o-ring and seal in the retainer plate . Put in a new seal for the solid shaft to ride on. I hold the 540 gear and bearing in place up in the housing while I drive the hollow shaft, with the PTO shaft bolted to it , through the bearing and gear. Keep pressure rearward on the gear so that the large bearing stays seated in its cup while driving the shaft in. It doesn't go all that hard and I've never damaged a seal doing it this way. Once it stops , reach up inside and get the snap ring (clip) back in place. It's a little tricky,but a long screwdriver works for me. Thrust washer and thrust bearing are next. Hold the 1000 gear up inside and then slide the 1000 shaft through the hollow shaft and both gears. Slide the nut on the shaft and then drive it home into the front bearing. Tighten the nut while jarring the 1000 end of the PTO shaft with a sledge to back seat the bearings. Don't get super aggressive tightening the nut, but it does take a firm grip and effort to turn the shaft. Pin it, lock wire it, and then silicone the plate. Draw bar,shield, and oil. Next!!