JD 1530 will not stay in reverse

[Shopwright]

JD 1530 will not stay in reverse

 

[Tx Jim]

Welcome to this forum
Please provide more information. Does this 1530 have manual or hyd reverse. If manual only is gearshift lever moving shift rail full engagement before coming out of reverse?

 

[Shopwright]

Thanks for the reply. The shift is manual. I can engage reverse gear (sometimes with difficulty) and operate the tractor, but it will not stay in gear. Holding the lever back manually will keep it engaged.

 

[beenthere]

50 year old tractor, and may have some transmission shifting or gear wear that needs to be addressed.

Here is a link to JD parts that shows what the shifting forks look like and the cover plate to inspect.

https://partscatalog.deere.com/jdrc/sidebyside/equipment/58898/referrer/navigation/pgId/214279

Can you add some history of your ownership, be it from new or how long you have experience with this model?? What the tractor has been used for ?

Do you do your own mechanics ?

 

[Shopwright]

50 year old tractor, and may have some transmission shifting or gear wear that needs to be addressed.

Here is a link to JD parts that shows what the shifting forks look like and the cover plate to inspect.

https://partscatalog.deere.com/jdrc/sidebyside/equipment/58898/referrer/navigation/pgId/214279

Can you add some history of your ownership, be it from new or how long you have experience with this model?? What the tractor has been used for ?

Do you do your own mechanics ?

I bought this tractor from a dealer in 1975. It was used in light farm work, then completely restored in 2016 including engine rebuild. Total hours are less than 2500. I have never had any transmission issues until a few weeks ago. The tractor is used now as a loader tractor, very light work, never kept outside. Yes, I do as much mechanical work that I am capable of or understand. Thanks for your reply.

 

[beenthere]

Thanks, she's a beauty.
May be it is something simple, but I'd think worth a look-see into the top of the tranny for anything obvious. Then try to assess any wear that can be fixed without opening up the tranny.
For only the cost of the cover gasket, you can check out how the forks slide the gears around. May be it is just something not sliding and only needs some penetrating oil or brake cleaner to loosen it up. Or some condensation has caused some rust that inhibits sliding forks. Hope for something simple.
Hope you keep us informed about what you find.

 

[Tx Jim]

I agree you have a very nice 1530. Due to 1530 trans having no synchronizers my guess is either shifter isn't fully engaging into reverse gear or a shift rail detent spring(item 23) has collapsed. https://partscatalog.deere.com/jdrc/sidebyside/equipment/58898/referrer/navigation/pgId/214279

 

[Jimmy Joe]

Wonder if the ball on the end of the shift lever is worn looks like its replaceable. On my International I had to build up the end of the shift lever with weld as there was not a replaceable tip.

 

[Tx Jim]

Ball on shift lever is replaceable but my guess due to differences in types of metal is socket bushing(item 4) would be more worn than ball. https://partscatalog.deere.com/jdrc/sidebyside/equipment/58898/referrer/navigation/pgId/214279

 

[Jimmy Joe]

Good point, basically any pivot points in the shift lever wear over time so there will be several wear points. On my tractor the shift lever moved forewared and back plus side to side there was noticeable wear in those pins also contributing to the sloppyness of the shifter.

 

[Shopwright]

Thanks for all the comments. I pulled the gear shift cover and found the bushing supporting the shift lever ball had worn through to the cast aluminum cover. A new cover from John Deere is over a thousand bucks--several used listed from $110 to $400! Assuming the used parts may have similar damage, I will probably bore the casting and sleeve the bushing. I know there is not a lot of meat there to work with. Any other comments are certainly welcome. This is such a simple problem compared to what may have been a more serious issue, requiring splitting the tractor. However, simple problems often have not-so-simple fixes. Incidentally, the right-hand shift bushing is like new. Makes sense as the left-hand lever controls the forward/reverse action.

 

[Shopwright]

I agree you have a very nice 1530. Due to 1530 trans having no synchronizers my guess is either shifter isn't fully engaging into reverse gear or a shift rail detent spring(item 23) has collapsed. https://partscatalog.deere.com/jdrc/sidebyside/equipment/58898/referrer/navigation/pgId/214279

Good point, basically any pivot points in the shift lever wear over time so there will be several wear points. On my tractor the shift lever moved forewared and back plus side to side there was noticeable wear in those pins also contributing to the sloppyness of the shifter.

I removed the cover plate and found the bushing supporting the shift lever ball to be worn to the extent it has damaged the aluminum cover plate. A new cover plate from Deere is priced at over 1,000 bucks. Used parts run $110 to $400. Used parts may be in similar shape. I may be able to bore it and make a sleeve to house the bushing. There is not a lot of meat there to work with and will wait until a new bushing is in hand before proceeding. I certainly appreciate your comments. This is a case where the problem is simple, but the fix not-so-simple.

 

[beenthere]

Glad you found the problem, which a 1,000 buck part is cheaper than what it could have been. So, weigh that into your decision, but a shot at your bushing idea certainly seems worth making the effort.

 

[Tx Jim]

Congratulations on your determining your tractors shifting problem.

 

[Shopwright]

Easy diagnosis, difficult repair. I bored the damaged cast aluminum cover plate and made a plastic bushing, picture #1. The bore, however, made the snap ring groove unusable and a new approach was needed to retain the ball on the shift lever. I machined a hold-down plate, retainer, and standoffs as seen in picture#2. The retainer is shown in picture#3 and the trial assembly on bench in picture#4. Picture #5 shows the mounted hold down on the tractor. This was a non-standard approach to fixing a hopeless situation as a new casting would cost over $1,000 if available. A minor issue was the sheet metal cover (not shown) that encountered interference, but that was fixed by fabricating some simple attachment brackets. The tractor now changes gears smoothly and stays in reverse. The conclusion is that the damaged bushing/housing was preventing the action of the shift lever to fully engage the reverse gear.