Farm Equipment - 7060 Pto seals replacement again.

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7060 Pto seals replacement again.

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Category: Allis Chalmers
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=166648
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Topic: 7060 Pto seals replacement again.

Posted By: AC 426 power
Subject: 7060 Pto seals replacement again.
Date Posted: 14 Dec 2019 at 9:03pm

Got a couple of questions on replacing the seals on my PTO, how much torque should I put on the big nut of the shaft? first time I replaced it I had a Issue where the 1000 shaft actually rubbed on the output shaft when using the pto on 540 and got hot enough to actually damage the front seal and cause a leak again before the problem was noticed, which made me wonder if this problem could have been caused by not having enough torque on the nut? or any other idea as to why this would happen? taking it apart all the bearings and gears look to be fine and did not have any unusual wear or other signs of improper install.

Replies:

Posted By: LB0442
Date Posted: 14 Dec 2019 at 10:36pm

Here is a picture from previous post I did on a dual pto install. Manual says to tighten that nut 20 inch pounds more than turning torque. Mine checked out at 185 inch pounds turning, so I tightened it down until it went to 205 to 210 inch pounds. Make sure you install the lock pin with new wire also. I would not over tighten it.

Posted By: LB0442
Date Posted: 14 Dec 2019 at 10:37pm

It's been in there for about 200 hours. So far works great, no leaks no noise.

Posted By: MACK
Date Posted: 15 Dec 2019 at 8:00am

Sounds like front bearing or race is the problem. Are you sure the front race is not missing? MACK

Posted By: AC 426 power
Date Posted: 15 Dec 2019 at 5:57pm

MACK wrote:

Sounds like front bearing or race is the problem. Are you sure the front race is not missing? MACK

Here is a look at the hub Mack, Everything looks normal to me.

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Posted By: MACK
Date Posted: 15 Dec 2019 at 7:36pm

It would have to be on solid shaft, not hallow shaft. MACK

Posted By: AC 426 power
Date Posted: 15 Dec 2019 at 9:04pm

MACK wrote:

It would have to be on solid shaft, not hallow shaft. MACK

Are you talking about the small signal bearing and race that the shaft rides on?

Posted By: Dave H (NE)
Date Posted: 15 Dec 2019 at 9:16pm

yes that is the one Mack is talking about

Posted By: MACK
Date Posted: 16 Dec 2019 at 7:15am

Yes, the bearing on the front end of the longest shaft. MACk

Posted By: AC 426 power
Date Posted: 16 Dec 2019 at 7:42pm

MACK wrote:

Yes, the bearing on the front end of the longest shaft. MACk

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Bearing looks fine and race looks to be correct.

uploads/7153/IMG_0106.JPG" rel="nofollow - uploads/7153/IMG_0106.JPG

Was wondering if it would be wise to re use the old big seal that I just installed this spring? Or should I just bite the bullet and replace it again? looks fine, but it is $50 through Agco.

Posted By: LB0442
Date Posted: 16 Dec 2019 at 10:31pm

There is a torrington bearing between the 2 gears, is that still good and the washer also?

Posted By: AC 426 power
Date Posted: 17 Dec 2019 at 8:57am

LB0442 wrote:

There is a torrington bearing between the 2 gears, is that still good and the washer also?

Appreciate the pictures and yes they are both there and in good condition.

Posted By: LB0442
Date Posted: 17 Dec 2019 at 9:22am

Well here are the install pages from the manual possibly that will help.

Posted By: AC 426 power
Date Posted: 17 Dec 2019 at 8:02pm

LB0442 wrote:

There is a torrington bearing between the 2 gears, is that still good and the washer also?

appreciate your time in posting this, very helpful, way better then my shop manual for some reason, I think my issue was that I might not have got the shaft in far enough in on the front bearing, going to be very mindful of the shaft protrusion this time.

Posted By: AC 426 power
Date Posted: 18 Dec 2019 at 7:39pm

LB0442 wrote:

It's been in there for about 200 hours. So far works great, no leaks no noise.

How exactly did you measure the torque on the nut? PTO output shaft with a socket?

Posted By: LB0442
Date Posted: 18 Dec 2019 at 8:46pm

Yes, I can't remember what size socket but one fit on the PTO shaft. I have a couple of different torque wrenches but the dial type ones work best for that. Similar procedure to installing differential pinion bearings.

Posted By: AC 426 power
Date Posted: 18 Dec 2019 at 9:27pm

LB0442 wrote:

Yes, I can't remember what size socket but one fit on the PTO shaft. I have a couple of different torque wrenches but the dial type ones work best for that. Similar procedure to installing differential pinion bearings.

I think my issue may have been improper torque on the nut, as I tightened the nut the 1000 shaft became flush with the hollow shaft as it should.

Posted By: AC 426 power
Date Posted: 21 Dec 2019 at 12:28am

Success! Got it all back together and no leaks or notices and most importantly no contact with the 1000 shaft, ran the grain cart all day with no issues.