302A with Reverser slipping in High Range

moo2613

Member
I have recently purchased a 302AD industrial with the reverser option that I am still trying to get used to. I keep using the clutch. I used it to spray my fields this weekend and had some issues.

While in high range the "clutch" seems to slip and the tractor will stop moving and the PTO will also stop while on any sort of incline. Also, after warm, when I release the clutch, the tractor will sit there and then the PTO will slowly start turning and and tractor will start to move. In low range, everything seems to work fine.

I believe this is something to do with the reverser, but I am not sure. Could be a plugged filter or screen? Am I messing it up by using the clutch? Thank you for any thoughts.
 

Any free play on the traction clutch pedal? The pto is common to the traction clutch but not to the reverser.
Has the clutch been greased and is the disk sliding freely on the transmission splines?
Is the pressure plate and dry clutch oil soaked ? Does the bel housing contains bits of stuff that used to be the clutch ?
 
Thank you both, I will start with changing the filter as soon as I find it. How hard is it to get to the sump pump screen?

The clutch pedal seems to act correctly and I will definitely see about looking inside the bell housing to see what I can find. I am assuming this can be done fairly easily. I brought it home Saturday and haven't had much time to mess with it.
 
I used it last night for brush hogging 5 foot high golden rod. Works like a champ in low range. I see now that it has a multi stage clutch and full clutch shuts off the PTO.
 
(quoted from post at 07:59:33 07/24/15) I used it last night for brush hogging 5 foot high golden rod. Works like a champ in low range. I see now that it has a multi stage clutch and full clutch shuts off the PTO.

A 302A industrial with a reverser and two stage clutch ? I'll have to check the free parts book online at the JD web site. Usually the hydraulic reverser requires a transmission driven pto?
What are you calling high and low range? The clutch can still slip in the lower gears , it's just less noticeable.
 

According to JDparts.com tractor with reverser doesn't have a dual stage clutch.
CLUTCH DISCONNECT AND FLYWHEEL
(CONTINUOUS PTO OR NO PTO)
(WITH REVERSER)
mvphoto24873.gif

ENGINE AND PTO CLUTCH AND FLYWHEEL
(WITH CONTINUOUS DRIVEN PTO)
(WITHOUT REVERSER)
mvphoto24874.gif
 
Sorry if I am misleading anybody. I received the service manual yesterday and it showed how you push the clutch pedal part way to disengage the drive gear and all the way to disengage the PTO. I tried it and it worked.

As far as high and low range, the left shift lever has Park, High, Low, and Reverse (this reverse does not work, I am assuming because of the reverser).
 
(quoted from post at 10:25:14 07/24/15) Sorry if I am misleading anybody. I received the service manual yesterday and it showed how you push the clutch pedal part way to disengage the drive gear and all the way to disengage the PTO. I tried it and it worked.

As far as high and low range, the left shift lever has Park, High, Low, and Reverse (this reverse does not work, I am assuming because of the reverser).

http://www.tractordata.com/industrial-tractors/000/0/1/14-john-deere-302a.html


Power Take-off (PTO):
Rear PTO: continuous live (optional)
Rear RPM: 540 (1.375)
 
full clutch is also for shifting gears...the first 2 or 2.5 inches stops the fluid going to the reverser..this allows you to stop tractor without loosing pto..I use mine also for going to reverse and slowly let out on clutch..just be careful when mowing around trees with low limbs, have had the limbs switch from forward to reverse and that can be a sudden stop when you hit steering wheel...
 

I can easily see where that could happen, I hit mine to reverse yesterday while turning, luckily I was only in 2nd low.
 
(quoted from post at 09:17:53 07/23/15)
I would suggest to change hyd filter,check/clean sump screen then check trans pump pressure which should be in the 155-165 psi range.

Do I need to drain the hydraulic fluid in order to change the filter?
 

Filter no. Screen either drain or have a helper hold a shop vac in the filler port.
Going to need to test the apply pressures etc on that transmission .
 
Thanks. I was going to start with the filter. It looks like it has 2 of them and I think one is for the backhoe attachment that I do not have.

This brings up another question, I would like to add remotes to the rear, obviously I will need a valve and hookups, but where do I tie into?
 

May as well replace both filters . There should be scads of donor tractors in the salvage yards with closed centre SCV valve, lines and couplers.
 
(quoted from post at 09:13:23 08/07/15)
Looks like I need to find a 302A in a salvage yard and get some parts. Thanks for the schematic.

Not just a 302. If you check the cross references in the free JD parts book. You will find that same valve is used on 30+ different models of JD tractors . The lines, fittings and connectors probably cross reference the same on 5 to 10 different models.
 

Is this on the left side (driver side of tractor)? if so, there is no screen in there. Apparently previous owner decided it didn't need one.
 

Thank you. I am very confussed then. I can not find this thing. The only thing similar was on top of the verticle filter and it had a spring and a valve in it. I will keep looking for it. Thanks again.
 
Is it possible that they have taken the plug out and replaced it with a fitting? There is a black rubber hose about 3" long that goes from the horizontal filter housing to the side of the transmission. It appears to connect at the same spot as where the screen should be on the diagram?? Thanks again for all of the help.
 

Ok, thank you. I thought I was going insane. I will pull that hose off and check the screen. Thanks again.
 
Finally got a new screen put in, the old one was about 1/4 dirty with sludge and what appeared to be nylon gear shavings (no idea where they came from). It seems to have fixed the issue I was having with the tractor not wanting to go forward for a minute or 2 after start up!! Thank you for all of the help.

I have a new transfer pump on order since the existing one decided to start leaking while I was working on the filter / screen project. Next project is trying to get some remotes installed on this thing.
 

I just have to find the parts. I found a SCV in a junk yard in Glenwood, AR (not sure what model the tractor was, but everthing looked right), but they wanted $500 for it. It felt like it worked properly, but the lines and fittings were in pretty bad shape. I thought they were way too high, but maybe I'm wrong.
 
Yes, the one I was looking at was an ag model, but it set out so long that you couldn't tell what it was. It looked very similar to my tractor and I am assuming it was Closed Center.
 

In lieu of factory scv's you could also install a spool valve with breakaway couplers and plumb the valve similar to a FEL ind valve. Yes you do need a CC valve.
 
(quoted from post at 10:28:32 11/06/15)
In lieu of factory scv's you could also install a spool valve with breakaway couplers and plumb the valve similar to a FEL ind valve. Yes you do need a CC valve.

Novice here, you just lost me.
 
Thanks, that cleared it up for me. For now, I am going to continue the search for a factory setup, but I may end up going this route. Thanks for the suggestion.
 
(quoted from post at 18:07:53 11/07/15) Thanks, that cleared it up for me. For now, I am going to continue the search for a factory setup, but I may end up going this route. Thanks for the suggestion.

There are plenty of SVC lines and valves in salvage yards cross compatible to your tractor.
If the intended use of the SCV is just to operate a lift cylinder on a plough, or turn the chute on a snowblower. Then returning the oil from the SCV direct to the transmission case is acceptable.
However if you plan on operating a log splitter, hydraulic motor or any other high flow hydraulic load. The oil discharge line from the SCV must be routed to a ported transmission oil filter cover. Otherwise the front pump will starve.
Depending on the vintage of your tractor . The AT28577 line was also used below
(SERIAL NO. -339544)

970 - 1020 Tractor - 16May11
971 - 2020 Tractor - 16May11
972 - JD300 Series Tractors - 02Nov06
973 - JD400 Series Tractors - 02Nov06
1121 - 1520 Tractor - 16May11
1241 - JD301 Tractor - 03Nov06
1242 - JD401 Tractor - 11Dec08
1428 - 300B Loader and Backhoe Loader - 26Mar08
1429 - 301A Tractor and Loader - 03Nov06
1430 - 401B Tractor and Loader - 03Nov06
1431 - 401C Loader and Backhoe Loader - 19Jul05
1432 - 302 Tractor and Loader - 06Nov06
1433 - 302A Loader and Backhoe Loader - 16Jun06
4133 - 1530 Tractor - 16May11

SELECTIVE CONTROL VALVE OIL LINE-CONTINUED
(SERIAL NO. 339545- )
part number AR91029 and it's used on these tractors.

1428 - 300B Loader and Backhoe Loader - 26Mar08
1429 - 301A Tractor and Loader - 03Nov06
1430 - 401B Tractor and Loader - 03Nov06
1431 - 401C Loader and Backhoe Loader - 19Jul05
1432 - 302 Tractor and Loader - 06Nov06
1433 - 302A Loader and Backhoe Loader - 16Jun06
1760 - 2440 (341000- ) Tractor - 16May11
1761 - 2640 (s.n. 341,000- ) Tractor - 16May11
1763 - 2040 Utility Tractor (350000- ) - 16May11
1764 - 2240 (350000- ) Tractor - 16May11
4150 - 2040 Utility Tractor ( -349999) - 16May11
 

Thank you for the list, this will be very helpful. My main use will be in the hay field for a rake or baler, so the first scenario should work fine for me. There is a very rare chance of a log splitter, but I learned from this site that I am better off to get a gas powered splitter.
 
(quoted from post at 12:12:31 11/09/15)
Thank you for the list, this will be very helpful. My main use will be in the hay field for a rake or baler, so the first scenario should work fine for me. There is a very rare chance of a log splitter, but I learned from this site that I am better off to get a gas powered splitter.

I use a log splitter wit the 1640 and the small 2.4cu" pump. It's plumbed direct from the HP line prior to the SCV supply and returns to the ported transmission oil filter cover .
It has acceptable speed even with the 5" ram. Your 302 with the larger 3.0cu" or larger pump would be ideal on a log splitter .
 
It sure would be nice to be able to use it for a log splitter, do you have any pictures of how it is plumbed?
 

For pressure remove fitting(parts key 17) and install a tee with a breakaway coupler.

29894.jpg


For return oil install a ported hyd filter cover(parts key 14) with a breakaway coupler if not already installed.

29895.jpg
 

I feel like I should start another thread for this, but since this is already going...

So since I have the Industrial with the second "Horizontal" filter and if I remember correctly, there is a port on the side of housing that the filter cover attaches to, then I should be able to hook the return into that.?.
 

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