350C Reverser Rebuild

BSims66173 · Post by **BSims66173** » Fri Jun 26, 2009 7:56 pm

I think I figured out the problem with my reverser. As you can see in the very first picture in this post, the clutch lever is worn. I guess it was approx 3/32 of an inch groove that was worn out in the lever. This was not allowing the clutch valve to fully open when the clutch was released. I tried welding up the groove and machining back out, but could never get it to operate smoothly, so I decided to just make a new one. It is not an exact match, but when installed, the clutch operates very smoothly and is traveling full stroke. Hopefully when all the parts arrive and I get it back together it will let me build full pressure in the reverser. I still have a lot of other things to fix and will be asking more questions as I go along. Here is a pic of the new clutch lever. Deere wanted $132.00 for a new one. This was milled from a piece of 1/2 inch steel I had laying around.

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BSims66173 · Post by **BSims66173** » Sat Jun 27, 2009 7:52 pm

I have another question. I have fixed the side rails that were broken and am now ready to start on the crossmembers and track frames. I have read several post on here that the 350s have a floating mount to the track frames. What does that mean. Is there supposed to be any movement on the front crossmember? I can make the bushings that hold the crossmember to the track frame. Is there supposed to be any up and down movement or are the bushings supposed to hold the crossmember tight to the track frame? My crossmember is worn some and I will have to build it up, but I am not sure how rigid this is supposed to be. Any help will be appreciated.

CatD8RII · Post by **CatD8RII** » Sun Jun 28, 2009 11:15 am

The late 350"A"s on up used a "Flanged bushing" so to speak, it lets the crossmember walk both directions a small ammount. All 16 bolts attaching the bar to the track frames have these bushings. I think the inner 4 bolts are bigger than the upper 8. You can still get them from Deere, or if you want to make them the dimensions are online at JDparts.com

digitup2 · Post by **digitup2** » Sun Jun 28, 2009 11:41 am

nice shop and the 350B crawler watch the tracks they look way too tight that is extreme hard on a under carriage life. Digitup!

BSims66173 · Post by **BSims66173** » Sun Jun 28, 2009 4:28 pm

Yes, the tracks were tight. I had pumped them up and pulled the crawler out of the shop to pressure wash it. I have since taken the tracks off and will be doing alot of build up on the frames and crossmembers. Any idea on how much play should be between the bushings and crossmember? I am thinking only a few thousandths. Thanks for the compliments on the shop. The crawler is a 350c. Still got a lot of work to do. Will try to post more pics as I go. Thanks for all the replies.

Barry

BSims66173 · Post by **BSims66173** » Fri Jul 03, 2009 7:24 pm

Here is a pic of the rear crossbar being turned after welding up the worn areas. Will be posting more pics later. The reverser rebuild has turned into a complete crawler rebuild almost. Anyway I am having fun and learning alot about these crawlers.

Barry

KenP · Post by **KenP** » Sat Jul 04, 2009 4:26 am

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BSims66173 · Post by **BSims66173** » Sun Aug 02, 2009 7:23 pm

Haven't had time to post any pics lately so I took some time today to take a few pics of my progress. It has been a lot of work and it is still not ready but getting closer. It will not be like new when finished but it will be a thousand times better than it was. So far I have replaced all the piston rings and rubber washers in the reverser pistons, all new seals and gaskets in the reverser, all new seals and gaskets in the hydraulic valve body and a new clutch piston and clutch arm that I made seen in earlier pics. Couldn't figure out how to connect a drill motor to the reverser input shaft so I am still hoping the clutch arm was the problem. I have welded up the worn areas on the rear crossmember and welded and ground out the mounting holes for it on the track frames. That was a lot of welding, turning and grinding. I welded up the worn bolt holes on the front crossmember and machined them back out and made new busings for all bolts. Everything looks good. I pulled the winch off because the input shaft seal had worn a groove in the shaft and it would not hold oil. I welded it up and turned it down and it is now holding oil. The input splines are worn pretty bad but should be ok for occasional use. Hopefully next weekend I will be able to crank it up and check the reverser. I will be highly disappointed if that wasn't the problem. Next major task will be replacing all the worn tilt componets on the blade and blade frame and new bushingand pins for the pivot joints. I am really dreading that. Will be alot of cutting and burning involved. Anyway here are a few pics to look at.

KenP · Post by **KenP** » Mon Aug 03, 2009 4:03 am

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richardprather · Post by **richardprather** » Sun Aug 16, 2009 11:15 pm

I just finished a complete rebuild on a 350B and it now works great. I had a very similar problem and after checking both pressures as discribed in the repair manual and both were good found I had problems with the reverse side pack due to wear on the housing the disc set sits in so take a look to see if they are worn because it can pust them only so tight and will slip under a load. All the clutch does in is allow the hyd fluid to recirculate and take pressure off of the maifold. If on directions work and the other doesn't it wouldn't be the clutch. the load for the clutch comes from the spring that returns it. Good luck as it is hard to test on the ground before complete install of motor and hyd pump.

BSims66173 · Post by **BSims66173** » Tue Aug 18, 2009 12:35 pm

Just a quick note to update everyone following this thread. Haven't had a whole lot of time to work on the crawler lately, but I have got it to the point that I can start it. After having the engine out for about three months, it turned over maybe twice and fired right up. After letting it run for a few minutes, checked the pressure on the reverser and it was reading right at 120psi. It looks like the worn clutch arm in the first pictures was the problem after all. I still have a lot of work to do, but it should have power when I get finished. I will try to post some more pics soon. Thanks to all who have replied. This forum is a very valuable tool and the people here are very valuable resources. Again thanks for all the help up to this point.

Barry

Tigerhaze · Post by **Tigerhaze** » Tue Aug 18, 2009 1:37 pm

I think I can speak for everyone by saying that you have done an impressive job on this crawler- this is another example that this bulletin board has a lot of talented people who much have more skill and free time than I have

mini kahuna · Post by **mini kahuna** » Tue Aug 18, 2009 6:07 pm

I have to agree tigerhaze,the skill to tear down a crawler and rebuild it like this always amazes me,great job on bringing back a crawler like this.
that little crawler will do alot of work for it's size and it will repay all your skill and care you are giving it.

pwright0001 · Post by **pwright0001** » Sun Apr 15, 2012 9:13 am

I know this is an old post , but would really like to know if this clutch lever was creating the problem

andregrondin · Post by **andregrondin** » Mon Apr 16, 2012 11:59 am

Hi !

Very nice job you did there ! great work !!

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350C Reverser Rebuild

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