1610D Koyker 110 baffled!

[LD1]

Okay, fellers. Haven't been here in quite a while cause I haven't needed too but she's got me stumped NOW!

1. FEL slower and slower to lift over last year. FEL will drop overnight if left up. Curl is fine.

2.will not lift at idle and very slow at high RPM

3.swapped hydraulic lines at control valve and problem swapped sides.

4.was going to park in barn to remove lift cylinders for o'haul and made baffling discovery:
When I picked up the bush hog on the 3 point, then picked up the FEL, FEL picked up at normal speed. It would not go down with the 3 point UP.
After lowering 3 point, FEL went down normally but went back to slow lift.

5. So I know it's a leaking valve somewhere, but no idea where to begin.

WHAT YALL THINK?

Finally got around to t-shooting this thing. Swapped the lines at the control valves. Problem did not swap sides. Curl works on both controls, so the lift cylinders are at the hydraulic shop for a rebuild. Unfortunately, just talked to the shop and they are having a time getting them apart. He's been soaking them in solvent for a couple of days and will try again this weekend. He advised to go ahead and try to source some more cylinders, so if you know of anybody who has any for a Koyker 110 off the top of your head, I'd appreciate it. Looks like new ones are about 6-$700 a piece.

You are directly contradicting yourself making it VERY difficult to advise you.....since at this point I have no clue what the tractor is doing or not doing and it seems you dont either

If your loader is leaking down overnight you have a valve problem. Rebuilding the cylinders "may" slow it down....but they are not the root cause of that problem. They MAY be the cause of slow lift though. And rebuilding them cylinders will have no effect on the 3PH, or rather how the 3PH is effecting the FEL.

 

[Henhouse1]

He needs to soak it in DEEP CREEP in an ultrasonic parts cleaner overnight. Sounds like it's really locked up. This is the same way I fix fuel injectors.

This guy is highly experienced. Shop has been in business for 40 years, so I’ll defer to his expertise. He did a great job rebuilding my curl cylinders. Talked to Koyker rep today. He said this is normal on these old ones because of the aluminum gland nut to steel tube differential metal corrosion.

 

[Henhouse1]

You are directly contradicting yourself making it VERY difficult to advise you.....since at this point I have no clue what the tractor is doing or not doing and it seems you dont either

If your loader is leaking down overnight you have a valve problem. Rebuilding the cylinders "may" slow it down....but they are not the root cause of that problem. They MAY be the cause of slow lift though. And rebuilding them cylinders will have no effect on the 3PH, or rather how the 3PH is effecting the FEL.

Well, whoever you are, you were no help at all. Rebuilt the lift cylinders and all is well. So much for your totally wrong valve diagnosis!

 

[LD1]

Well, whoever you are, you were no help at all. Rebuilt the lift cylinders and all is well. So much for your totally wrong valve diagnosis!

It's clear you have zero understanding in how the hydraulics of a loader work.....any why my diagnosis is not wrong. But I hope it made you feel better in your feeble attempt to come back here to say I told you so.

I could take the time to explain to you how the hydraulics work, how rebuilding the cylinders have appeared to fix the issue, and how your valve still has internal leakage. But it's clear you are clueless about hydraulics and have no desire to even understand them, and would rather sling insults at those that do.

 

[Henhouse1]

It's clear you have zero understanding in how the hydraulics of a loader work.....any why my diagnosis is not wrong. But I hope it made you feel better in your feeble attempt to come back here to say I told you so.

I could take the time to explain to you how the hydraulics work, how rebuilding the cylinders have appeared to fix the issue, and how your valve still has internal leakage. But it's clear you are clueless about hydraulics and have no desire to even understand them, and would rather sling insults at those that do.

Hey MORON! I graded my driveway yesterday using all functions of the hydraulic systems, loader AND box blade! ALL FUNCTIONS NORMAL. NOTHING LEAKS DOWN OR DOESN'T HOLD, EVEN OVER NIGHT!

I SPENT 30 YEARS WORKING ON JET AIRCAFT FOR DELTA AIRLINES IN ATLANTA SO I KNOW HOW HYDRAULIC SYSTEMS WORK, JUST NOT THIS SPECIFIC TRACTOR SYSTEM!

F-OFF with your uncalled for shitty attitude. NOT ONLY ARE YOU WRONG, YOU ARE A JERK! OH YEAH, IF YOU COULD READ AND COMPREHEND YOU WOULD HAVE SEEN A PICTURE OF THE BROKEN O-RING I REPLACED ON THE HYDRAULIC VALVE! HALFWIT!!!

 

[LD1]

Hey MORON! I graded my driveway yesterday using all functions of the hydraulic systems, loader AND box blade! ALL FUNCTIONS NORMAL. NOTHING LEAKS DOWN OR DOESN'T HOLD, EVEN OVER NIGHT!

I SPENT 30 YEARS WORKING ON JET AIRCAFT FOR DELTA AIRLINES IN ATLANTA SO I KNOW HOW HYDRAULIC SYSTEMS WORK, JUST NOT THIS SPECIFIC TRACTOR SYSTEM!

F-OFF with your uncalled for shitty attitude. NOT ONLY ARE YOU WRONG, YOU ARE A JERK! OH YEAH, IF YOU COULD READ AND COMPREHEND YOU WOULD HAVE SEEN A PICTURE OF THE BROKEN O-RING I REPLACED ON THE HYDRAULIC VALVE! HALFWIT!!!

You are the only one with a crappy attitude. All I did was try to help, as someone who obviously knows more than you about equipment hydraulics.

No where in this thread was there any mention of you replacing an oring on a hydraulic valve. (Not that it would have fixed the issue anyway).

You background working on aircraft trying to stroke your ego and make us think you are smart is comical. A tractor is not an aircraft.

A hydraulic valve has multiple passages that can leak. The ONLY way a loader can leak down is for oil to go BACK through the valve. If the valve didn't leak....you could remove the piston seals all together and your loader wouldn't move a bit.

So it's clear your valve was leaking down on the rod side (lower) passage in the valve. And STILL WILL. But by preventing oil from even getting to the rod side by rebuilding cylinders, your symptoms have subsided.

It's astonishing someone that claims to be familiar with hydraulics doesn't understand this.

Sorry you woke up on the wrong side of the bed this morning and feel obligated to lash out at those that tried to help...just to stroke your own ego some more and think your rubbing it in my face that I was wrong. It really makes you look immature and foolish.

 

[Henhouse1]

You are the only one with a crappy attitude. All I did was try to help, as someone who obviously knows more than you about equipment hydraulics.

No where in this thread was there any mention of you replacing an oring on a hydraulic valve. (Not that it would have fixed the issue anyway).

You background working on aircraft trying to stroke your ego and make us think you are smart is comical. A tractor is not an aircraft.

A hydraulic valve has multiple passages that can leak. The ONLY way a loader can leak down is for oil to go BACK through the valve. If the valve didn't leak....you could remove the piston seals all together and your loader wouldn't move a bit.

So it's clear your valve was leaking down on the rod side (lower) passage in the valve. And STILL WILL. But by preventing oil from even getting to the rod side by rebuilding cylinders, your symptoms have subsided.

It's astonishing someone that claims to be familiar with hydraulics doesn't understand this.

Sorry you woke up on the wrong side of the bed this morning and feel obligated to lash out at those that tried to help...just to stroke your own ego some more and think your rubbing it in my face that I was wrong. It really makes you look immature and foolish.

All functions still perfect! and you are still a Moron! Look on my "low idle" post which drifted to 3 point discussion. Winston pointed me in the correct direction. I guess you think he is an idiot, too! You can even see a photo of the broken 0-ring even though you probably won't know what you are looking, unless you are too stupid to navigate to another post. I will pre-accept your apology!..........or NOT!

 

[LD1]

Welcome back. Continuing to show how ignorant you are to anyone reading that actually understands hydraulics

 

[bmaverick]

All functions still perfect! and you are still a Moron! Look on my "low idle" post which drifted to 3 point discussion. Winston pointed me in the correct direction. I guess you think he is an idiot, too! You can even see a photo of the broken 0-ring even though you probably won't know what you are looking, unless you are too stupid to navigate to another post. I will pre-accept your apology!..........or NOT!

The good thing is, your hydraulic problems are solved. Glad Winston was here to help you out.
Our machines are Yanmars, typically not the norm for how other brands are done. Glad the o-rings were the easy fix vs. a complete hydraulic overhaul running into a high price of repairs.

 

[LD1]

The good thing is, your hydraulic problems are solved. Glad Winston was here to help you out.
Our machines are Yanmars, typically not the norm for how other brands are done. Glad the o-rings were the easy fix vs. a complete hydraulic overhaul running into a high price of repairs.

All of the problems he had are very easy to explain and understand now that all the information has been given. Some people just choose not to want to understand.