Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

M670 Super PTO adjustment

Goto page 1, 2  Next

 
Post new topic    
View previous topic :: View next topic  
Author Message
J.A.R
Regular


Joined: 13 Dec 2017
Posts: 104


Report to Moderator

PostPosted: Sat Dec 30, 2017 1:34 pm    Post subject: M670 Super PTO adjustment Reply to specific post Reply with quote

My 68 super has a very weak engagement on the PTO lever. Wondering how 2 adjust it as my jensales book covers only the older low band tractors for some reason. When engaging the lever it pretty much just falls forward it takes no effort and there is no noiticable "snap" . And when it is forward and you push it even farther forward the lever vibrates and feels bumpy like some thing is rubbing. I haven't been able to hook it up to anything to c if it slips but it does turn. Can anyone point me in the right direction..thanks.[/code]
 
Back to top
View user's profile
molinegb
Tractor Expert


Joined: 13 Feb 2005
Posts: 2166


Report to Moderator

PostPosted: Sat Dec 30, 2017 2:53 pm    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

Adjustment should be no different than early 670,M5 etc. It has a Twin Disc clutch. You
just push pin in and tighten clutch to setup snap on lever. Sounds like your lock nut has
come loose making setup impossible. To access just remove seat and hydraulic setup. Only
real way to see what is going on. Just did one last week. By the way all 670's after 1966
used the heads you have. There was no real A series in the 336 like the 504. Just different
head and copper rings for injectors are different.
 
Back to top
View user's profile
J.A.R
Regular


Joined: 13 Dec 2017
Posts: 104


Report to Moderator

PostPosted: Sun Dec 31, 2017 10:29 am    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

Will I need any special tools to do this job? Sounds like it may be a little project and are parts available for this area of the tractor?
 
Back to top
View user's profile
molinegb
Tractor Expert


Joined: 13 Feb 2005
Posts: 2166


Report to Moderator

PostPosted: Sun Dec 31, 2017 10:39 am    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

No special tools. Parts should be easy to get if required.
 
Back to top
View user's profile
J.A.R
Regular


Joined: 13 Dec 2017
Posts: 104


Report to Moderator

PostPosted: Sun Dec 31, 2017 3:49 pm    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

I have everything loose on the pto main shaft the one I'm assuming that goes through the tractor clutch and tranny. My question is how does that shaft come out. My book dosent say anything but simple pull shaft out the rear of the case. From what I can see there is something either in the tranny or tractor clutch that is stopping it from pulling out. Please tell me how I can remove it. The tractor is not split....book said it didn't need to be.
 
Back to top
View user's profile
Alan K
Tractor Guru


Joined: 09 May 1999
Posts: 6277


Report to Moderator

PostPosted: Sun Dec 31, 2017 10:10 pm    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

Here are a couple of pictures when I adjusted the one in my M5. Im betting the
670s are the same. The M602 I have I removed the shaft. You are supposedly
supposed to be able to bump the shaft out the rear by using a drift or punch on
the edge on the shaft just infront of the clutch assembly. There isnt much of an
edge lol. I used a slide hammer threaded into the shaft at the rear. The shaft
only has to be removed if you are removing the clutch assembly or parts
associated with it. For just adjusting or tightening up the nut that holds the
clutch to the shaft you dont have to remove it.


 
Back to top
View user's profile
J.A.R
Regular


Joined: 13 Dec 2017
Posts: 104


Report to Moderator

PostPosted: Mon Jan 01, 2018 2:35 am    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

Thanks Alan but after draining fluid and looking it over more I found that it ate one of the clutch plates...found most of it in the bottom of the case. I have a slide hammer so maybe will give that a go tomorrow will let you know what becomes of it.
 
Back to top
View user's profile
molinegb
Tractor Expert


Joined: 13 Feb 2005
Posts: 2166


Report to Moderator

PostPosted: Mon Jan 01, 2018 6:35 am    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

M670 super has different shaft as there is no rear hydraulic pump. One way is to tap shaft to put in 3/8 bolt and make puller. I made one to lock onto the splines on M5.
 
Back to top
View user's profile
Alan K
Tractor Guru


Joined: 09 May 1999
Posts: 6277


Report to Moderator

PostPosted: Mon Jan 01, 2018 7:48 am    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

Ive often thought of making a clamp of some sort to clamp on the shaft to have
something to hit against. Might be something to try if it doesnt come loose.
 
Back to top
View user's profile
molinegb
Tractor Expert


Joined: 13 Feb 2005
Posts: 2166


Report to Moderator

PostPosted: Mon Jan 01, 2018 9:20 am    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

When pulling shaft you are pulling two tapered bearings on rear portion of shaft as well as
bushings in housing and spline in flywheel. I pulled two last week. They can be a tug. When
reinstalling make sure gap between the bearing is up. This is where oil is fed. If gap not
in position bearing will fail.

 
Back to top
View user's profile
molinegb
Tractor Expert


Joined: 13 Feb 2005
Posts: 2166


Report to Moderator

PostPosted: Mon Jan 01, 2018 9:32 am    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

Also there should be a shim on end of shaft to set endplay. There is an Allen screw with a cotter pin in midst of clutch that holds key in. When reassembled and clutch set. Shaft has to have 20 thou endplay. There is fair movement in shaft back and forth. The torque of locking clutch will move shaft. This is why it has to be done twice. The setscrew actually locks shaft.
 
Back to top
View user's profile
J.A.R
Regular


Joined: 13 Dec 2017
Posts: 104


Report to Moderator

PostPosted: Mon Jan 01, 2018 10:44 am    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

Well thanks guy appreciate it I'm going to make a puller using 3/8 threaded rod and pull little then hit the set screw landing with my air hammer then just keep working back and forth. Would have been nice if the manuals would have mentioned something about how hard these things are in there lol would save a lot of time and confusion lol. But then again we got you guys thanks again.
 
Back to top
View user's profile
molinegb
Tractor Expert


Joined: 13 Feb 2005
Posts: 2166


Report to Moderator

PostPosted: Mon Jan 01, 2018 12:17 pm    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

Best puller is take a 3/4 piece of flat iron 6 inches long by 2 wide. Drill center to
accept your 3/8 bolt. Dill two holes on each end and welds on couple 1/2 fine thread nuts.
Use 2- 4 inch fine thread 1/2 inch bolts. Turn them evenly and let them do the pulling.
 
Back to top
View user's profile
J.A.R
Regular


Joined: 13 Dec 2017
Posts: 104


Report to Moderator

PostPosted: Mon Jan 01, 2018 12:22 pm    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

I welded this together worked flawlessly.
 
Back to top
View user's profile
J.A.R
Regular


Joined: 13 Dec 2017
Posts: 104


Report to Moderator

PostPosted: Mon Jan 01, 2018 1:39 pm    Post subject: Re: M670 Super PTO adjustment Reply to specific post Reply with quote

Quick question I was wondering during install would I be better off pressing the two end bearings off the shaft and then get the shaft in and then press them back in after everything is back in the tractor?
 
Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Minneapolis Moline All times are GMT - 8 Hours
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  

TRACTOR PARTS TRACTOR MANUALS
Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters