Piston Rings for a 1956 John Deere?

The_Amateur

New User
Hi everyone,

I have here a full set of piston rings for a John Deere tractor and am trying to figure out what year they were made and which tractor model they would have been used for. I know the logo came out in 1956 and was used until 1968 so that narrows it a bit.

I contacted greenpartstore.com and they responded with an email saying "Thank you for visiting our website. I’m unable to obtain any information on this piston ring set that you have provided me. I could only venture that it is a tractor John Deere made before 1957 as this was the last year that these were used."

If the above is true then it would have had to have been a set made in 1956 or possibly 1957. Were their many models during that time? Do you guys agree with the information in the email? Ideas, comments, etc. are welcomed!!

I don't know why some of my pictures keep being double posted.....



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(quoted from post at 15:20:08 02/15/15) Hi everyone,I have here a full set of piston rings for a John Deere tractor and am trying to figure out what year they were made and which tractor model they would have been used for.

according to http://forums.yesterdaystractors.com/viewtopic.php?t=750035

"standard size piston rings in my JD 60. I've just learned there are two sets available from DEERE; Part #AA 4922 R ($105.00)and #AR 21883 R ($135.00) which is a heavy duty set that has an expander with the oil control ring."
 


There is Top, 2nd, 3rd, 4th and 5th grooves. There are two rings for each one. The diameter of the rings from outside edge to outside edge is either 5 3/4" or 5 7/8". All of them look the same except for the 5th groove rings (I've included a couple pictures of one). Along with each 5th groove ring is a smaller metal piece (I've included a picture). Are these the oil control rings? The width and thickness of the rings is 3/16" except for the 5th groove rings which are 3/16" wide and have a thickness of 5/16".

I also discovered this little green insert in the box which I took pictures of.

I apologize as I'm not a mechanical type of guy so I don't know my way around engines, machinery, etc.

What years are the JD A, 60, 620 & 630. Do they all use the same size piston rings?

Please let me know if I can provide any further information.
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(quoted from post at 18:15:58 02/15/15) What years are the JD A, 60, 620 & 630. Do they all use the same size piston rings?

approximately:
630 : 1958 - 1960
620 : 1956 - 1958
60 : 1952 - 1956
A : 1934 - 1952

I believe that the bore was 5.5" on all of them. I don't know though if they all used the same ring pack.
 
(quoted from post at 05:46:20 02/16/15) I don't know though if they all used the same ring pack.

http://www.external_link.com/john_deere_engine_60.html makes me suspect that the 620/630 were the same but maybe different from the 60 and the A depending perhaps on the year?

John Deere 60 Piston ring set with 3/16" compression rings and 5/16" oil ring Std. bore - complete for 2 cylinders

vs

John Deere 620, 630 Piston ring set with 1/8" compression rings and 1/4" oil ring Std. bore - complete for 2 cylinders

vs

John Deere A Piston ring set all 1/4" rings Std. bore - complete for 2 cylinders
 
(quoted from post at 18:10:04 02/15/15) Look them up in a master parts index. Lotsa guys have em.


I managed to find a Master Parts Index database online. Unfortunately "AR21883R" isn't in there :(
 
(quoted from post at 05:46:20 02/16/15)
(quoted from post at 18:15:58 02/15/15) What years are the JD A, 60, 620 & 630. Do they all use the same size piston rings?

approximately:
630 : 1958 - 1960
620 : 1956 - 1958
60 : 1952 - 1956
A : 1934 - 1952

I believe that the bore was 5.5" on all of them. I don't know though if they all used the same ring pack.

Based on this and your other post detailing the measurements of the compression rings it's looking like these were likely made for a JD60.
 

The 620 and 630 do not share the bore size with a late A or a 60.
The A/60/620/630 remark originated from the leter "A" being the first in the part number.
 
(quoted from post at 09:54:54 02/18/15)
The 620 and 630 do not share the bore size with a late A or a 60.

Hummm. Tractordata (in addition to the other sources I reviewed) show the A, 60, 620 and 630 all with a 5.5" bore. Am I missing something?

http://www.tractordata.com/farm-tractors/000/0/3/36-john-deere-60-engine.html
Bore/Stroke: 5.50x6.75 inches [140 x 171 mm]

http://www.tractordata.com/farm-tractors/000/0/4/43-john-deere-620-engine.html
Bore/Stroke: 5.50x6.375 inches
 
(quoted from post at 14:01:42 02/18/15)
(quoted from post at 09:54:54 02/18/15)
The 620 and 630 do not share the bore size with a late A or a 60.

Hummm. Tractordata (in addition to the other sources I reviewed) show the A, 60, 620 and 630 all with a 5.5" bore. Am I missing something?

http://www.tractordata.com/farm-tractors/000/0/3/36-john-deere-60-engine.html
Bore/Stroke: 5.50x6.75 inches [140 x 171 mm]

http://www.tractordata.com/farm-tractors/000/0/4/43-john-deere-620-engine.html
Bore/Stroke: 5.50x6.375 inches

Darn, what was I thinking. You are correct. It was less stroke on the 620/630. Less stroke on the 720/730 iirc too.
 
just curious... when the strokes changed, what changed with it? was it rod length, wrist pin height or deck height?
 

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