Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Harry Ferguson Tractors Discussion Forum
:

Rocker Assembly

Welcome Guest, Log in or Register
Author 
Steve (PE)

09-07-2007 05:01:26




Report to Moderator

I had to pull the head off my TEA20 due to a blown head gasket. When checking over the rocker assembly I noticed a couple of the rockers were sticking, and the bushing were out of place. Are the bushings suppose to be pressed into the rocker itself or on the pipe? Also, how do you properly remove the caps on the end of the pipe? It looks like there is a pin through them but I have enough to replace without breaking something else.

Thanks

[Log in to Reply]   [No Email]
Steve (PE)

09-13-2007 07:43:43




Report to Moderator
 Re: Rocker Assembly in reply to Steve (PE), 09-07-2007 05:01:26  
As a follow up to the head gasket I dropped the pan to look from the underside for cracks in the block, as it was stated on this site numerous times they would be more noticable from below.

When the pan came off I didn"t spot any cracks but did find 2 thrust washers sitting in the sludge in the bottom of the pan. Is it possible for these to work there way out of a bearing? The bearings look fine.

It is evident a previous owner had done some work on the lower half of this motor. The head had not been touched but there appears to be new(er) pistons and liners. I did notice the end caps on the connecting rods are not matched as per their numbers (as the service manual instructs). At this point is that something that should be correct or left as is, since the tractor has been running this way for many years this way?

I am thinking since I have gone this far I sould at least remove the pistons and liners, put in new liner gaskets, and piston rings?

[Log in to Reply]  [No Email]
John (UK)

09-07-2007 10:18:00




Report to Moderator
 Re: Rocker Assembly in reply to Steve (PE), 09-07-2007 05:01:26  
The bushes are supposed to be pressed in the Rocker itself and run free on the shaft, make sure that the oil holes line-up. To remove the end-caps you need to punch the pin out of the cap.
If they are sticking then it maybe that there isn't enough oil getting up to the valves through the Head. Make sure that the Head Gasket is fitted the correct way so the oil hole to the valves is clear. You say that you have a blown Head gasket, make sure that the Cylinder Liners stand proud of the Block face by .002" - .008" at least or it will blow again and DO NOT turn the engine over without the Head being fitted or something to prevent the Cylinder Liners moving or the liner gaskets may leak...John

[Log in to Reply]  [No Email]
John (UK)

09-07-2007 10:17:35




Report to Moderator
 Re: Rocker Assembly in reply to Steve (PE), 09-07-2007 05:01:26  
The bushes are supposed to be pressed in the Rocker itself and run free on the shaft, make sure that the oil holes line-up. To remove the end-caps you need to punch the pin out of the cap.
If they are sticking then it maybe that there isn't enough oil getting up to the valves through the Head. Make sure that the Head Gasket is fitted the correct way so the oil hole to the valves is clear. You say that you have a blown Head gasket, make sure that the Cylinder Liners stand proud of the Block face by .002" - .008" at least or it will blow again and DO NOT turn the engine over without the Head being fitted or something to prevent the Cylinder Liners moving or the liner gaskets may leak...John

[Log in to Reply]  [No Email]
Steve (PE)

09-07-2007 16:39:17




Report to Moderator
 Re: Rocker Assembly in reply to John (UK), 09-07-2007 10:17:35  
Thanks John I figured that was the way it was suppose to work. I think some of the holes in the shaft may have been gummed up with 55 years of oily sludge, and the rocker adjustments were way off. The liners are standing proud of the block by .003" - .004".

I did get a service manual before diving into this (they just don"t give much detail on the rocker assembly) and your posts on here have been invaluable.

Thanks Again.

[Log in to Reply]  [No Email]
John (UK)

09-08-2007 04:25:36




Report to Moderator
 Re: Rocker Assembly in reply to Steve (PE), 09-07-2007 16:39:17  
Thank you for that....Just make sure before you refit the Head that the oil gallery from the Camshaft to the face of the block is clear so that oil will pass through it. Should it be blocked or restricted you can get a supply for the Valve gear from the same point as the pressure gauge attaches and then feed it into the rear of the Cylinder Head where it is drilled for an oil gallery for the Valve Gear, you will probably find that the oil pressure will drop a little when you do this but check that you are not getting too much oil up to the valves or it may cause problems, if it is getting too much, devise some method of restricting the flow as a temporary measure. Really if this happens the Camshaft needs removing and cleaning together with the oil galleries in the Block that feed it. You could try some flushing oil, that may get through it and wash it all out. You could also try compressed air down the oil freed from the surface of the Cylinder block back to the camshaft bearing, but I must admit I never had much success with that, still it is worth trying.If the oil pressure is low on your engine just consider fitting a Rotor Pack to the oil pump, we have had a lot of success doing that just lately, thinking the bearings are worn and they aren't, it was the Pump all the time.Make sure that the breather pipe from the Valve Cover to the manifold is clear too, be careful not to drop the pin and washer that may be fitted to the valve cover end.John

[Log in to Reply]  [No Email]
Steve (PE)

09-13-2007 10:58:39




Report to Moderator
 Re: Rocker Assembly in reply to John (UK), 09-08-2007 04:25:36  
As a follow up to the head gasket I dropped the pan to look from the underside for cracks in the block, as it was stated on this site numerous times they would be more noticable from below. When the pan came off I didn"t spot any cracks but did find 2 thrust washers sitting in the sludge in the bottom of the pan. Is it possible for these to work there way out of a bearing? The bearings look fine.

It is evident a previous owner had done some work on the lower half of this motor. The head had not been touched but there appears to be new(er) pistons and liners. I did notice the end caps on the connecting rods are not matched as per their numbers (as the service manual instructs). At this point is that something that should be correct or left as is, since the tractor has been running this way for many years this way?

I am thinking since I have gone this far I sould at least remove the pistons and liners, put in new liner gaskets, and piston rings?

[Log in to Reply]  [No Email]
John (UK)

09-13-2007 11:23:00




Report to Moderator
 Re: Rocker Assembly in reply to Steve (PE), 09-13-2007 10:58:39  
I have never heard of the thrust washers working their way out so I think that someone has dropped them in the Pan. If you are thinking of fitting Rings and liner seals then you would fit new shell bearing liners too and then you can put the con-rod caps on the correct rods.While you are doing all that why not consider reworking the Cylinder head and valves too and make a proper job of it. If I can help with any info about all this or settings etc. just email me....John

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

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

Website Accessibility Policy