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John deere 302A backhoe


 
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Tomtom81
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PostPosted: Sat Jan 12, 2019 2:01 pm    Post subject: John deere 302A backhoe Reply to specific post Reply with quote

I have a john deere 302-A backhoe. Everything works as it should expect it will not go forward. The reverse works fine. I have replaced the main clutch and replaced the forward clutch pack the old one was burnt up. The hoe is full of oil but still no forward movement I have a manual and parts book for the machine. But it's hard to tell where to check the pressure on the reverser. If anyone can help I would sure appreciate it. I was wondering if you welded up the front clutch pack would it move then and just use it like a regular manual trans just have the reverser for reverse only.
 
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Jim.ME
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PostPosted: Sat Jan 12, 2019 2:24 pm    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

I would rule out the thought of welding the forward clutch. The forward clutch has to disengage when the reverse clutch engages. Welding it would make it always engaged.

What do you have for a service/technical manual? If it is a John Deere manual what is the publication number on it? I don't have a 302 manual but have a couple others that show reversers, which by the parts breakdowns look similar, so maybe between them we can locate the test points for you.
 
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Tomtom81
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PostPosted: Sat Jan 12, 2019 8:37 pm    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

My manual is a john deere TM-1090 but it's
a reprint. It shows to check the pressure
on the right side of the tractor by the
reverser valve but the pic isn't real
clear.
 
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Jim.ME
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PostPosted: Sun Jan 13, 2019 4:59 am    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

This is just a shot at maybe being a help to you. Here are the photos from the reverser diagnostic section of my 2030 manual, see if they are similar and clearer. HTH









 
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Tomtom81
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PostPosted: Sun Jan 13, 2019 8:36 am    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

That looks like the same from what I can
tell.
 
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Tomtom81
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PostPosted: Sun Jan 13, 2019 8:38 am    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

Was the 302-A backhoes any good have you
ever messed with one?
 
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Jim.ME
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PostPosted: Sun Jan 13, 2019 8:58 am    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

Were my photos clear enough to help you find the locations to attach gauges for testing? Did you see a reply on the John Deere Forum, from TxJim, about checking for a missing roll pin?

I can't say on the 302 loader/hoes, but have been around the 301 tractors, no hoe or loader, a little, and know of several others had. I would pick one of those up if I find one for the right price to mount a forklift on. They were used by multiple steering wheel holders, few operators, and seemed fairly dependable for the treatment they endured.
 
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Tomtom81
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PostPosted: Sun Jan 13, 2019 8:53 pm    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

On the roll pin if it was missing it
shouldn't work in reverse. I'm thinking
the regular tractor with the reverser is
the same it just doesn't have the loader
or backhoe. As far as the reverser setup.
 
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Jim.ME
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PostPosted: Mon Jan 14, 2019 4:31 am    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

CVPost-Tomtom81 wrote:
(quoted from post at 00:53:33 01/14/19) On the roll pin if it was missing it
shouldn't work in reverse. I'm thinking
the regular tractor with the reverser is
the same it just doesn't have the loader
or backhoe. As far as the reverser setup.


From looking at the parts catalogs that is what I thought, there are many of the same part numbers in the reverser area, and they overlap in build years.
 
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Tomtom81
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PostPosted: Mon Jan 14, 2019 5:53 pm    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

I just wish I knew exactly where to check
the pressure for the reverser. My manual
just says at the bottom of the reverser
valve
 
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Jim.ME
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PostPosted: Mon Jan 14, 2019 6:36 pm    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

I believe the last photo, fig. 5, is that check, the check of the system pressure regulating valve. Fig. 7 is checking the individual clutch pressures. The gauge is shown hooked into the tap for the forward clutch. The reverse clutch tap should be just behind it, towards the rear of the tractor.
 
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Tomtom81
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PostPosted: Wed Jan 16, 2019 7:12 am    Post subject: Re: John deere 302A backhoe Reply to specific post Reply with quote

Yeah mine has 2 plugs on top of the
reverser valve. I'm waiting on my guages
to come in so I can check the pressure.
 
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