Yanmar 1500D Green

[relhogh]

I need to repair the brakes, no adjustment left.
This baby does not have a convenient cover plate. I must remove the whole axle housing.
Where can I find a write up procedure so as I don't take of to much stuff.
I dont have any idea of what needs to be replaced.

HELP

 

[damammel]

Relhogh, I don't know that you'll find a write up for that design. It seems Hoye only covers the ones with the cover. Looking at the parts drawings, it seems the question is how the outer bearing is assembled on the axle. It seems by the drawings you may be able to slide the axle cover off with the seal and bearing in the case. You will only need to remove the outer hub to allow the case removal. This is just my observation.

As far as parts. You may be best to wait till its apart to order them. Some on here have had luck swapping around the shoes without replacing anything. It seems only one wears.

 

[relhogh]

Thanks for your input. I guess I will have to go into it hoping for the best.
I will have to do it twice (L&R).

 

[winston1]

I give Yanmar great credit on these little tractors for their engineering. This is one case I think they failed. No reason to make brakes that hard to access.

 

[damammel]

I agree Winston. Nothing like burying the brakes inside the housing. I'm thinking since they did that it might be designed to easily remove the housing. Guess we will find out soon enough.

 

[damammel]

Relhogh, be sure to check your axle bearings and seals while you have it apart. Good time to catch any worn parts. If you could take some pictures I'd like to see the green axle setup apart.

 

[relhogh]

I appreciate the support. i was hoping someone had done it before. It would make it easier.
The hard part is I have a total hip replacement 2 months ago and can't squat or bend.
Thanks again guys.

 

[relhogh]

I got the bolts out of the case but the whole mess ,cover and axle only move out about a quarter inch.
I was able to at least remove and clean the hydo screen.

 

[winston1]

What is behind #8 and #5 here? Yanmar Tractor Parts: REAR_AXLE_CASE_G

 

[damammel]

What is behind #8 and #5 here? Yanmar Tractor Parts: REAR_AXLE_CASE_G

That's the covers for the hydraulic pickup screen. #5 is where the line connects.

 

[relhogh]

well I believe #5 is the left side. A bearing?Upper left on case. Screen is lower right on the case. Don't know about #8
is that important?

 

[damammel]

Actually #5 is the cover on the right side for the screen. #8 is where the closed end of the screen sits inside the case. The picture shows the view from the back side of the tractor. The two holes in the case that nearest to you is the setup for the PTO shafts.

Have you pulled the axle seal to see how the bearing is held in? Might it help to spray PB Blaster on the shaft possibly helping the bearing slide on it?

 

[winston1]

That's the covers for the hydraulic pickup screen. #5 is where the line connects.

What about the external brake linkage and cam? Anything at that point stopping the removal?

It's evident I don't know how to take the thing apart but sometimes questions can help bring an answer. Do you think it is possible that the bolts holding the final reduction gear on will have to be removed so the axle can slide out. #37 here. Yanmar Tractor Parts: REAR AXLE INT (G)

 

[relhogh]

Thanks for getting my head on straight. I don't know my right from my left.

 

[relhogh]

Ok winston thanks.

Now the question is how do I get to the bolt?

 

[winston1]

There you go, asking questions I can't answer. I know on some Yanmars the pto assembly can be removed for access but looking at the green drawing that doesn't appear to be possible. Might be the lift assembly may have to come off the top to access. Again, realize I'm purely in a speculation mode here, certainly no first hand knowledge.

A drawing of the lift assembly. http://www.hoyetractor.com/mm5/merchant.mvc?Screen=CTGY&Category_Code=YM1500HYDLIFT

 

[damammel]

Ok winston thanks.

Now the question is how do I get to the bolt?

There should be a plate on the bottom of the axle housing. 8 bolts I think and it will come down. You'll be able to look in and see the bolt then. Be sure to use thread sealer on the studs if they come out.

 

[relhogh]

Thanks again guys.
Your speculation is 500% better then my knowledge.
Another problem is where the heck do I put my jackstand.
I have it under the rear end. The tractors rear end.

 

[damammel]

Here's what I did with mine. Notice I left the jack under the forward part of the transmission just to be safe. Pay no attention to the removable brake cover in the picture.



Are you going to be replacing the bearings and seals for the axle while you have it torn down?

 

[relhogh]

Nice clean tractor, D
Is the bottom of the case still accessable with the jack in that position?
I need to reposition all my stands.
Thanks
I have to hobble back and forth from the garage to the house to see the posts.