Trouble with transmission 955L

New to the forum, I have been reading it for about a month now and finding some very valuable information. I have a 955L, 1972 S#85J. 3304 Eng. The unit will be in forward or reverse motion and the shifting lever will slip into neutral and lock up in neutral. Let the unit set and add trans oil and unit operates fine. dip-stick gauge will read different levels as if trans oil is going somewere, but no leaks as far as I can see. Can anyone on FORUM help. Thanks

The transmission level should be check when the transmission is angaged

hector gemme, thank you for your reply, what my unit is doing is, I will be using the unit and working it, and in it will just stop and transmission lever will go to the neutral position on its own and you cannot get it in forward or reverse it locks up in neutral, Then if you add transmission fluid and let it cool off it will work again.

toddcat955L said: hector gemme, thank you for your reply, what my unit is doing is, I will be using the unit and working it, and in it will just stop and transmission lever will go to the neutral position on its own and you cannot get it in forward or reverse it locks up in neutral, Then if you add transmission fluid and let it cool off it will work again. Click to expand... Todd, your trans has a spring to force the shifter into neutral when pump pressure is low. This is to prevent you starting in gear and running over something. I suspect your machine is transfering oil from the trans into the steering clutch and bevel gear case. When your trans gets low on oil it looses pressure and goes out of gear. If this is your problem come on back. Later Bob

If memory serve's me right, both dipsticks are under the seat for the tranny/bevel gearcase. Bob is right on the money with the transmission forcing itself to neutral on low/no oil.

Bob/Ont, thanks for your reply, what you described in your last posting is the exact problem I'm having with the transmission Its locking up in neutral, running great for 45 mins are so then locks up.

granpa, thanks for the reply. Yes both dip-sticks are together under the righthand side of the set.it seem I can check one and it will be full and check the other and it will be over filled. then I check them later it will be the opposite. Its like the oil is switching tanks. thanks for your help.

toddcat955L said: granpa, thanks for the reply. Yes both dip-sticks are together under the righthand side of the set.it seem I can check one and it will be full and check the other and it will be over filled. then I check them later it will be the opposite. Its like the oil is switching tanks. thanks for your help. Click to expand... From reading other threads about this problem, I believe the trans and steering pump are mounted together on the same shaft. The oil gets transfered from one to the other through leaking pump seals.

OldandWorn said: From reading other threads about this problem, I believe the trans and steering pump are mounted together on the same shaft. The oil gets transfered from one to the other through leaking pump seals. Click to expand... Yes and if the steering pump suction screen(beside the suction pipe) gets clogged it transfers faster. Later Bob

Thanks 2 all replys, next step check suction screen, and then pump seals.are the pump seals a big job, or can a farm boy with a bucket full of good tools handle it? AND would there be any thing else 2 check in diagnosing this trans. thanks

toddcat955L said: Thanks 2 all replys, next step check suction screen, and then pump seals.are the pump seals a big job, or can a farm boy with a bucket full of good tools handle it? AND would there be any thing else 2 check in diagnosing this trans. thanks Click to expand... Todd, get some old garage sale wrenches in 9/16, 5/8, 11/16 and 3/4" that you can, heat bend and cut to get around stuff. If screen is clogged it likely means doing brake bands in the future but no need to hurry. If you clean the screen get all oil levels right and work it for a bit, might be all you need now. Later Bob

Thanks Bob, Plan on working on suction screen and oil levels SATURDAY, weather man said 55 or so. but after saturday may be 2 cold 2 run the old GIRL,there talking 9 degrees or so.May have 2 wait a while 2 try her out.I will get back 2 the FORUM with any progress ! Any other suggestions am all EARS. And I have a bucket full of "HEAT, BEND and MANUFACTURED on the farm" wrenches,great TIP.they do work realy good in tight places.THANKS!!!!

Not to hijack.... I have a 955K. Where is the suction screen? I have replaced the filter, but don't know where the trans screen is. I know where the bevel gearcase whatever screen is. Thanks Wags

I belive the trans screen and magnet housing is encased right next 2 the trans filter encasement,under the left side of operators seat,at least it is on my 955L.

Bob/Ont, Thanks for INFO on scution screen. Removed screen and I have never seen a screen this stoped up! Try 2 take PICs to let everone see, inside the screen was completely filled.You cannot even see any sun light thru screen at all. replacing screen & filter.Hope this helps TRANS!!!ATTACH]98758[/ATTACH]

The black stuff is brake band material,,, I see some paint and some unrecognizable material also... It appears to have not been serviced in many a moon. If your a lucky fella(an Im not) that will fix your problem.

Grandpa,Thanks for looking at the SCREEN, Will I need 2 remove the fule tank,HYD tank and batt-box, to replace break bands,Iam going 2 replace them as long as I am in there. Dont want 2 wish I had after all is put back in place. Thanks 4 INFO!!!!

toddcat955L said: Grandpa,Thanks for looking at the SCREEN, Will I need 2 remove the fule tank,HYD tank and batt-box, to replace break bands,Iam going 2 replace them as long as I am in there. Dont want 2 wish I had after all is put back in place. Thanks 4 INFO!!!! Click to expand... Todd, I think you can replace them without removing all those items.... do you have the brake housing cover off?

]Grandpa, Thanks 4 reply. here is a pic of were Iam at.

So, I assume the rectangel 6 bolt covers provide access to the bands?? At top and bottom of pic. And... the upper right, the filter for the trans? Is the trans screen in front of the filter (to the right in the pic)? And your hose is hooked to the bevel gearcase filter pressure port? Wags