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Deere 690e LC excavator questions
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ryank
Posted 1/7/2017 22:56 (#5752455)
Subject: Deere 690e LC excavator questions


SE Nebraska		I recently acquired a `96 Deere 690e lc excavator. It has around 8000 hrs. Seems to be a decent machine the little I've run it. I have some questions I'm seeking guidance on.
1) The oil restriction light will come on when I'm running it through some functions. I don't know the condition of the hydraulic cartridge filters, but I plan to change them. Is it possible the light coming on is as easy of a fix as filters, or is this indicating a larger issue?
2) The previous owner said he was running the farm store "303" oil in it. This makes me cringe because I've heard that oil is junk. Opinions on whether is should change it out?? I see Deere actually recommends 15w40 engine oil
3) If you are doing something like cleaning a ditch, and you are tracking parallel to it. Is it ok to swing over and dig off the side of the tracks? Or should you actually swing tracks over so you are reaching over the front of them?
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hillfarmer
Posted 1/7/2017 23:18 (#5752475 - in reply to #5752455)
Subject: RE: Deere 690e LC excavator questions



I guess I would change the filters

big job to flush the oil out

means unhooking the returns lines from the cylinders

15 40 would be a detergent
I would think they would want a non detergent oil

the 303 happens to be good enough to run a hydrostat in 1974 and a rear ring and pinion

don't bid a ditch cleaning job if you are not going to reach over the tracks

only if the ditch is very very, deep

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Riverbottom30
Posted 1/7/2017 23:18 (#5752477 - in reply to #5752455)
Subject: RE: Deere 690e LC excavator questions


Central IL		We were told to run 10W30 torq guard supreme in ours. They were running hygard out of the factory but had problems with pump failure. I would get that cheap Hydraulic oil out of there and change the filters and hope it hasn't been ran too long with that in there. Perfectly fine to dig over the side of the tracks. If lifting something heavy or digging on some tough trees it helps too dig over the front. If pulling toout hard over the sides it will get your bottom rollers pulled over the track rails and slam back down into place when you track. Kind of hard on the rails. Probly could pop rail clear past rollers if tracks are loose. They are good machines. Traded ours off but should have just kept it probly for what we got for it. I loved that machine.
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hillfarmer
Posted 1/8/2017 06:13 (#5752583 - in reply to #5752477)
Subject: RE: Deere 690e LC excavator questions



so one high dollar oil caused pump problems

cheap oil is not good?

but the other high dollar oil is the trick !!!!!!!!!!

oil operating temp will cause more problems then kind of oil
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4960
Posted 1/8/2017 04:51 (#5752558 - in reply to #5752455)
Subject: RE: Deere 690e LC excavator questions


wi		Restriction light always comes on when oil is cold...
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ryank
Posted 1/8/2017 07:23 (#5752650 - in reply to #5752558)
Subject: RE: Deere 690e LC excavator questions


SE Nebraska		I ran it for about 6 hours about a week ago. The ambient temperature was about 40. I too thought it was maybe just cold fluid. But I would have thought running in those conditions would have been long enough. But light still came on.
Edit: the guy I got it from said the local Deere construction dealer told him it was ok to run the 303. One of the boom cylinders is very slightly seeping. So they told him it was ok to use that and just keep topping the oil off until the leak got to the point it had to be fixed....not saying it's right, merely stating that's what I was told

Edited by ryank 1/8/2017 07:29
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JJS
Posted 1/8/2017 08:15 (#5752751 - in reply to #5752455)
Subject: RE: Deere 690e LC excavator questions


Southern Lower Michigan		I was told "do not use the Hyguard in the hydraulics; use engint oil( Torque guard). it was something about how the Hyguard contains the moisture in the oil, that caused problems with the pumps.
Joe
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lsweddle
Posted 1/8/2017 08:23 (#5752777 - in reply to #5752455)
Subject: RE: Deere 690e LC excavator questions


Morgantown, Indiana		I would drain all the old oil out and replace it with the correct oil. Raise boom, stick, and extend bucket all the way out. with motor shut off. slowly lower each one. starting with bucket. this will remove a lot of the old oil. then you can remove filter. replace every thing with the proper filter and oil. don't forget the suction strainer.
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Fencepost
Posted 1/8/2017 08:45 (#5752824 - in reply to #5752777)
Subject: RE: Deere 690e LC excavator questions


Use 10w30. I was told hydraulic oil is high in zinc which in turn is hard on brass in the pump causing failure. Take that info for what it's worth.
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Mitchco
Posted 1/8/2017 08:52 (#5752837 - in reply to #5752455)
Subject: RE: Deere 690e LC excavator questions


SW OH		John Deere as well as others try to keep it simple when it comes to oil. It used to be engine oil in the engine and UTHF in everything else so we only 2 oils to deal with. As hydraulic pressures increased above 3,000 PSI, Deere had hyd pump failures. They determined water to be at fault. UTHF has the ability to encapsulate small traces of water. Water has tremendously less lubricating properties than oil, so it quickly eats up slipper plates in axial piston pumps. The higher the pressure, the faster this happens. Water in hyd oil can be worse than dirt. Deere switched to engine oil in hyd systems trying to keep it simple, around 2004. That brought on hard starting, sluggish operation, etc in cold weather. About 2 years ago Deere went to "Hydrau", their version of AW46. AW46 is a basic 10W hydraulic oil.

I don't know what pressure a E model puts out. It must be in the upper to high range if they recommend 15W40. Cold, thick oil will cause the light to come on. So will a dirty filler, yet out of the hundreds of machines I deal with I have only seen a dirty filter a few times. Change the oil and filters with Deere (Hitachi) filters and AW46 oil.

Digging over the side of the tracks is fine. You will have less stability and not be able to lift as much is the only downside.

Mitchco
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1586
Posted 1/8/2017 09:44 (#5752971 - in reply to #5752455)
Subject: RE: Deere 690e LC excavator questions


Go look in the bottom of a bucket of 303 oil and you wouldn't put it in anything but an old farmall M. Not sure on the older model Deere but the newer ones required Zinc free hyd. oil. Can't get that junk out fast enough with the price of a new pump.
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hillfarmer
Posted 1/8/2017 09:48 (#5752982 - in reply to #5752971)
Subject: RE: Deere 690e LC excavator questions



Zinc used to reduce wear, on high pressure contact points
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1586
Posted 1/8/2017 10:40 (#5753089 - in reply to #5752982)
Subject: RE: Deere 690e LC excavator questions


hillfarmer - 1/8/2017 08:48

Zinc used to reduce wear, on high pressure contact points


Here is a thread on another forum about the Hitachi's and zinc. It's a big no no. Guys that dump hyguard in a JD excavator is not the right thing either.

http://www.heavyequipmentforums.com/showthread.php?28938-Good-Hydra...

Edit: not all oils have zinc for some strange reason. Locomotive engine oil does not either.

Edited by 1586 1/8/2017 10:41
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6030pullr
Posted 1/8/2017 10:51 (#5753113 - in reply to #5753089)
Subject: RE: Deere 690e LC excavator questions


ECWI		On the hyd. Oil........ I would HIGHLY recommend using what the book for your machine says. In the early 2000's when the "C" series came out they switched the style of pumps, which is when the type of oil changes. I have a 230LC, calls for hyguard so that's what I run. I think the real early Deeres used engine oil. Your "E" series should be the same pump as my 230.
As earlier stated, oil is cheap, pumps arnt. Any milky oil in it when u pull the plug, drain, refill, check again.
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Wildcat385
Posted 1/8/2017 20:19 (#5754605 - in reply to #5753113)
Subject: RE: Deere 690e LC excavator questions


Central KS		Did you buy your excavator in Central Kansas on a Big Iron auction? If so, that hoe came from about 2 miles from my place. Should be a good one.
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ryank
Posted 1/9/2017 12:44 (#5755752 - in reply to #5754605)
Subject: RE: Deere 690e LC excavator questions


SE Nebraska		Yes. I did actually. It seems to be a good machine. I'm just trying to put all the maintenance things in place before I pile some hours on it...small world, small world indeed.
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