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Martin

eaton 1100 'bench testing' question

8 posts in this topic

trying to determine whether i have a good trans or not and have a question or more.

i have an eaton 1100 in a rolling chassis that i want to test to see if its working well enough to justify using in a new tractor rebuild. i hooked it up to my 1848 pto with a longer mower belt to test it out. oil looks very clean so i left it and i know i need to get the correct filter on there, but for now its staying until i see some light at the end of the tunnel.

 

post-4321-0-25542600-1386206328_thumb.jp

 

post-4321-0-58392300-1386206349_thumb.jp

 

just did a quick test tonight to see if i could at least get the lift to work. success on the first pull of the lever. hydro pump seems very quiet and no leaking or damp areas either. i worked the lift up and down from one extent to the other and it worked as good as any nice working lift i have. so I'm happy so far, now the questions......

 

to test the drive I'm going to get it up off the ground and see if i can get the wheels to turn in either direction. i want to run it this way for quite a while until i can get some raising of oil temp. 

 

is putting weight on the lift going to change anything as far as a test goes? i figure if it goes up and down, is quiet doing so and doesn't leak, I'm 99 % there....

is there any way to check to see if it is loosing pressure when it gets warmer?

can a gauge be hooked up and is this easy enough to do?

is it even worth finding out the pressures? what will having them tell me?

is this a good enough way to test the whole hydro system? i think it will tell me at least if its working and if there are any leaks. i don't have a working engine that i can just throw in there to drive it around without puling one of my old starter gen motors from an unrestored 1277. i know this is probably the best way, drive it and get it nice and hot to be sure. i could swap it out from one of the other 1100s but then i got to deal with hoses etc and not really interested in pulling apart good working systems and opening other cans of worms.

 

while it was running, and over the noise of the engine in the 1848, the pump seemed to be very quiet, quieter than the other 2 1100 tractors are. both of the other 1100s work well and aside from one having a leak in the lift, they both are leak free. 

 

ao at this stage i am happy with how things are going. just wondering if there was some expert opinions to help me on my way with some ideas.....

 

thanks in advance for any input, fire away guys..... :thumbs:  

Edited by Martin
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I will also post some video of how it works out as I test this thing out.

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I did the same thing with a Sunstrand. You at least know is works some. You really need to load it to make sure. The only thing I can think off is maybe putting the frame against some thing immovable and seeing if you can get the tires to break lose on the ground. Kind of dangerous though. Putting a running engine on the roller with the bare bones hooked up might be the best way.

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Like push the tractor up against the wall and lay some rubber in the garage?

I'm leaning towards swapping out a good running engine more and more, I think it will be easier in the end....

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a quick thought ...  if the trans won't heat itself - apply some heat to thin out the trans fluid and retry your lift test.

 

or does the lift work off the charge pump only?

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I haven't ever done it but the Eaton 1100 Manual has some info on hooking up a gauge and testing charge pump pressure.

 

The trans in my 520 (which one day soon will be swapped out) takes at least a couple of minutes running (in Summer) before it will lift a 48" deck.  The one in my Diesel tractor will lift the same deck instantly.  However when driving the 520 trans works fine and performance doesn't seem to drop off at all, even after the trans temp light has been on for half an hour or so.

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thanks for the input so far guys........

 

i went through the manual and could see where they say to hook up the gauge for charge and lift pressure. 

i might look into getting some sort of gauge and fittings to test pressure etc.

 

tonight i pulled both the eaton 1100 and its carcass and my 1848 outside on the driveway and chained the hitch of the carcass to the front axle of the 1848. just enough chain that the belt would only pull tight enough not to slip. i didn't want to put too much side load on the hydro pump. hooked up the belt and ran it for about half hour like that. didn't really get it hot, more 'warm' as i felt the filter. i think to be sure i need to load it up more to get more heat in it, but it helped to put a bit of forward pressure on the trans every now and again, enough to drag the 1848 on its brake on the rough concrete. it only took a very minor movement of the dcl to get the tires to break loose on the rough concrete.

 

once i had it running for about half hour i blocked the front wheels of the carcass with a 8 ft long piece of 4x6, just the right size to wedge it under the wheels and grip a little on the rough concrete driveway. the lift continued to work great. but i really wanted to see how the trans was so i started to load it up by going forward on the dcl. it would break loose immediately, any forward movement resulted in spinning of the rear tires and/or dragging the tires of the 1848 along the concrete on the park brakes. i stood up on the foot boards to add some weight to the rear. same deal, instant spinning of tires/dragging of 1848. i would like to get it hotter and see if there is any change, but as of right now i couldn't notice any difference between the drive from dead cold to warm. the tractor was real hard to push back in the garage afterwards so that also tells me that the 'fluid' coupling of the pump is working how it should. it took maybe 30 minutes for it to roll a little easier after running it.

 

heres how i had it hooked up....

 

post-4321-0-44432600-1386286448_thumb.jp

 

heres two videos of it running, first one is operating the lift....

 

 

second one is putting some rubber on the concrete. still not enough weight on it so i stood on the footboards after this, wasn't game enough to try and video that though.....

 

 

heres the concrete under the tires......

 

post-4321-0-87089000-1386286463_thumb.jp

 

post-4321-0-59220300-1386286483_thumb.jp

 

 

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And meantime the neighbors are wondering why that crazy foreigner is doing burn-outs on his driveway with yet another damn lawn-mower.

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