LX 665 seems to bind up on the left side

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NMartin

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Jun 23, 2010
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When going forward, it seems to bind up at the wheels on the left side. Whats going on? Low hydraulic fluid? Bad pump? Arms seem to work fine but do seem to roar a little. Will back up without doing it though. Please help.....
 

Tazza

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It could be a broken chain. Block the machine so the wheels are off the ground. Rotate them by hand and see if they move the same amount front and back. There should be the same amount of slack on front and back tyres on each side.
 
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NMartin

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It could be a broken chain. Block the machine so the wheels are off the ground. Rotate them by hand and see if they move the same amount front and back. There should be the same amount of slack on front and back tyres on each side.
Would more or less slack cause it to bind up? Even if all chains are intact?
 

Tazza

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Would more or less slack cause it to bind up? Even if all chains are intact?
If the chain had come off and wound up into a ball it won't move at all, but if its setup correctly there should be the same amount of back and forth slack on the front and back tyre.
Extra length won't cause it to bind, there is no way it could shrink. A longer chain would make scraping or chattering noises as it touched the chain case.
 

irvi00

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May 30, 2010
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The boom operates off a seperate pump than the ground drive. Are you getting feedback (resistance) through the sticks when it starts to bind? Could be the adjustment idle sprocket is worn out or broken. If it was a pump or drive motor it should do it foward or reverse. I would pull the inspection panels on the chain case and smoke that over first. Hope this helps!
 
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NMartin

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The boom operates off a seperate pump than the ground drive. Are you getting feedback (resistance) through the sticks when it starts to bind? Could be the adjustment idle sprocket is worn out or broken. If it was a pump or drive motor it should do it foward or reverse. I would pull the inspection panels on the chain case and smoke that over first. Hope this helps!
I got it up off the ground. One side has alot more slack than the other. The left side (from cab) had a back and forth slack of @ 1 1/2"- 1 3/4" of slack and the right side has @ 1/2" of slack. I checked at the local parts shop in town for hydraulic fluid but they have 3 different types. I'm not sure what type to use. Where do I check the adjustment idle sprocket? It does give feedback in the sticks when it binds up and only does it in forward. I will try to pull the panel off the left side (again from cab) as I have already checked the right but it may be next week. Got a well deserved vacation with the wife coming up for the 4th. Thanks for all your feedback, it is helping.
 

skidsteer.ca

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I got it up off the ground. One side has alot more slack than the other. The left side (from cab) had a back and forth slack of @ 1 1/2"- 1 3/4" of slack and the right side has @ 1/2" of slack. I checked at the local parts shop in town for hydraulic fluid but they have 3 different types. I'm not sure what type to use. Where do I check the adjustment idle sprocket? It does give feedback in the sticks when it binds up and only does it in forward. I will try to pull the panel off the left side (again from cab) as I have already checked the right but it may be next week. Got a well deserved vacation with the wife coming up for the 4th. Thanks for all your feedback, it is helping.
10/30 motor oil for the chain cases.
Ken
 
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NMartin

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On the lx665 the gear reduction boxes are separate from the chain cases. The fill /check plug is under the seat and they take 80/90 gear oil.
OK, I know its been a while. Its been crazy around here. Anyways, heres the new scoop. I checked the oil reserve and it seemed low. Some moron painted the tank and its hard to tell. Now its quit binding up but after about 15 mins of running it starts beeping, shows a flashing light with an oil drop inside what looks like a tire with an arrow on each side. If I dont shut it down soon, it shuts itself down. It still roars like an S.O.B but no binding that I know of. Any ideas?
 

jerry

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OK, I know its been a while. Its been crazy around here. Anyways, heres the new scoop. I checked the oil reserve and it seemed low. Some moron painted the tank and its hard to tell. Now its quit binding up but after about 15 mins of running it starts beeping, shows a flashing light with an oil drop inside what looks like a tire with an arrow on each side. If I dont shut it down soon, it shuts itself down. It still roars like an S.O.B but no binding that I know of. Any ideas?
That symbol is for charge pressure below normal and will shut the engine down in 30 seconds.
 
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NMartin

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That symbol is for charge pressure below normal and will shut the engine down in 30 seconds.
Charge Pressure? What does that mean and would that cause the roaring too? How do I fix it is what I'm asking I guess.
 

Tazza

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Charge Pressure? What does that mean and would that cause the roaring too? How do I fix it is what I'm asking I guess.
Charge pressure is to do with the main pumps. Oil leaks through the pumps and motors, only a small amount. The charge pump replenishes this oil, it should be about 110PSI, if there is a problem somewhere and the charge pressure is not high enough, the pump does not get enough oil and it will growl and cavitate.
I don't know if the NH machines have a seperate charge pump or not.
 

jerry

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Charge pressure is to do with the main pumps. Oil leaks through the pumps and motors, only a small amount. The charge pump replenishes this oil, it should be about 110PSI, if there is a problem somewhere and the charge pressure is not high enough, the pump does not get enough oil and it will growl and cavitate.
I don't know if the NH machines have a seperate charge pump or not.
check through this forum, I know skidsteer.ca put a link here to the repair manuals. It has two hydro pumps with hyd pump on the front end. Does it have enough oil in it? If the engine is revving up it sounds like there is no load on it because of no oil.
 
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NMartin

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check through this forum, I know skidsteer.ca put a link here to the repair manuals. It has two hydro pumps with hyd pump on the front end. Does it have enough oil in it? If the engine is revving up it sounds like there is no load on it because of no oil.
I cant really tell how much oil is in it due to some idiot painting the tank black. When I first got it, when you would try to move the bucket, oil would spray out of the attachment lines up front. I tightened the fittings and all seemed ok. Now, its went from binding up when I would try to go forward to this. I did add a little fluid to it, which seemed to fix the binding, a little anyways. It will still seems to bind but never stops. I jacked the whole thing in the air and all wheels seem to be held back by the drive chains. Now, the charge pressure light comes on and it shuts down. I saw somewhere that there is a filter and a dipstick to check somewhere under the seat. Would this help? Im at a loss and really trying not to have to take this thing in to the local shop. They seem really helpful, but I dont have the money to waste.
 

jerry

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I cant really tell how much oil is in it due to some idiot painting the tank black. When I first got it, when you would try to move the bucket, oil would spray out of the attachment lines up front. I tightened the fittings and all seemed ok. Now, its went from binding up when I would try to go forward to this. I did add a little fluid to it, which seemed to fix the binding, a little anyways. It will still seems to bind but never stops. I jacked the whole thing in the air and all wheels seem to be held back by the drive chains. Now, the charge pressure light comes on and it shuts down. I saw somewhere that there is a filter and a dipstick to check somewhere under the seat. Would this help? Im at a loss and really trying not to have to take this thing in to the local shop. They seem really helpful, but I dont have the money to waste.
Mine is a 1999 so it may or not be the same, there is only one hydraulic filter I know of back by the radiator. under the seat there is a pipe plug filler on the top of the final reduction gear box on each side. These get filled with 80/90 gear oil, to the top or close. I would take a razor blade and scrape paint off the tank toward the top and dump in the oil. Even if you fill it to the top and have to take some out at least you will know it has enough. It is just 10-30 and I have seen that as cheap as $5 a gallon this summer. Can you move the wheels at by hand when it is jacked up? I would not get into the mechanical teardown until the charge pressure issue is cleared up. may be just no oil in there or could be the park brake dragging i guess. good luck
 
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NMartin

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Mine is a 1999 so it may or not be the same, there is only one hydraulic filter I know of back by the radiator. under the seat there is a pipe plug filler on the top of the final reduction gear box on each side. These get filled with 80/90 gear oil, to the top or close. I would take a razor blade and scrape paint off the tank toward the top and dump in the oil. Even if you fill it to the top and have to take some out at least you will know it has enough. It is just 10-30 and I have seen that as cheap as $5 a gallon this summer. Can you move the wheels at by hand when it is jacked up? I would not get into the mechanical teardown until the charge pressure issue is cleared up. may be just no oil in there or could be the park brake dragging i guess. good luck
Im going to put some paint stripper on it tomorrow to see the oil level better. I lifted the seat and removed a 1 1/8" bolt at what I believe is the charge pump. There was a screen there in what resembled a long bolt with no threads. I cleaned the screen. It was full of what seemed more like 10w30 than 80/90 weight. Could I have over filled the reservoir to cause the problem? I know it was a little low because the aux connectors up front were leaking. I tightened them, but after some fluid loss. I really dont have the means to pay for a check at the local shop. Thanks to all of you for your help and patience, but please keep it coming. I obviously have a ways to go still.
 
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