Bleeding Hi-ranger bucket contols

Jehinten

Well-Known Member
Location
Evansville
im having the same problem nothing is coming from the lines on the upper controls do you have a manual or info can't find anything online
I do not have a manual. From what you've described, have you taken the line off at the upper controller , and you do not get any fluid out of it? Just one function or all 6?
 

TreeCo

Well-Known Member
Mine has an air pressure controlled 'dead man' switch that was supplied air from a pencil lead sized tubing. It connects to the pistol grip.
 

Chase carey

New Member
Location
Anderson
It appears to have the low pressure system. basically the low pressure physically pulls and pushes your lower levers to allow the boom to move.

At this point I'd fly the boom up and down a few times to try and dislodge any trapped air. I remember it was very frustrating for me when I did mine, but a relief once I got the first system to work because I realized I was in fact bleeding it correctly. As you mentioned there is not much info out there on this procedure. I was even happy when I found that when I tried to rotate right that it actually went left, bc that's an easy fix once its finally to the point of operating.

If memory serves me correctly I spent a week of evenings bleeding my system after replacing all of the tubing. It was definitely 3-4 evenings if it wasn't a week. I also went through nearly 5 gallons of hydro fluid bleeding all of the lines.
What type of tubing did you use I need to replace all of my tubing found some called naraflow type h i believe that may work
 

Chase carey

New Member
Location
Anderson
I do not have a manual. From what you've described, have you taken the line off at the upper controller , and you do not get any fluid out of it? Just one function or all 6?
It gets a little coming out the supply line i need to replace the tubing it was leaking from where someone pieced together with air brake tubing what kind of tubing do i need to get i found some online called naraflow type h 1/4"
 

Jehinten

Well-Known Member
Location
Evansville
It gets a little coming out the supply line i need to replace the tubing it was leaking from where someone pieced together with air brake tubing what kind of tubing do i need to get i found some online called naraflow type h 1/4"
I let the hydraulic shop order the tubing for me to ensure that I had the correct tubing, so I'm unsure what the brand was. Just a heads up, pulling this tubing through the boom is quite the chore, at one point I was on an extension ladder pushing the tubing in the elbow while someone pulled on the other end and we could only move it one inch at a time. I also used electrical cable lubricant to help it slide in. You may choose to just let the hydro shop handle it for you unless you want a challenge.

One other thing I found out while doing mine, I had went through and taped my new bundle of tubing about every foot or so to keep the bundle straight and tight only to find that the channel in the boom is oblong and the round bundle that I made would not fit in the boom. If you wish to tape your bundle to keep it all in line with each other, don't bother taping more than about every 5 feet as you'll be pulling the tape off as it goes in the boom.
 

Chase carey

New Member
Location
Anderson
Hello. I found a few pics of when I rebuilt this, hopefully they will help. View attachment 66519 I'm not sure how closely you've looked at yours, but this component is on the bottom where the hydraulic tubing connects. View attachment 66520 This is the main body, looking at the top side. You can see the linkages next to the one already disassembled, this linkage is shown in the next photo. View attachment 66521

All seals and o-rings and locations are marked in the pictures, and all 6 linkages are identical.
How do you get the seal out of the one in the 2nd picture?
 

NyFarmboy

New Member
Location
Ticonderoga ny
98 highranger 80" So today the upper boom goes up but not down. All other functions work . Hit the dead man switch on the main lower hydrolic controls on the turn table and it goes down. The upper hydrolic function on the pistol grip will not lower the upper boom. The upper control was rebuilt a month agao. I dont see any air in the lines. But the main question i have is does anyone kno which 1/4"line on the bottom of the pistol grip houseing is the upper boom down function line. I want to check for flow but it seems the pistol grip controls may be plugged on the down function. Any ideas are appreciated. Yes I bleed all controls on the main hydrolic controls. No air found. Lever works fine when using the deadman switch. Just not at the pistol grip control. Thanks
 

Jehinten

Well-Known Member
Location
Evansville
98 highranger 80" So today the upper boom goes up but not down. All other functions work . Hit the dead man switch on the main lower hydrolic controls on the turn table and it goes down. The upper hydrolic function on the pistol grip will not lower the upper boom. The upper control was rebuilt a month agao. I dont see any air in the lines. But the main question i have is does anyone kno which 1/4"line on the bottom of the pistol grip houseing is the upper boom down function line. I want to check for flow but it seems the pistol grip controls may be plugged on the down function. Any ideas are appreciated. Yes I bleed all controls on the main hydrolic controls. No air found. Lever works fine when using the deadman switch. Just not at the pistol grip control. Thanks

I've forgotten off hand which line it was on mine, however if you remove the black boot below the pistol grip you should be able to see the linkages and see which two move for that particular function. The up and down linkage both move at the same time, working together to make the movement happen. The lines connect directly below the linkages, allowing you to figure out which ones should be flowing.
 

NyFarmboy

New Member
Location
Ticonderoga ny
Thank you. Do u kno how the pressure adjustments work. Where the 1/4" lines come out of the bottom of the pistol grip hyd control. For each function. If u loosen the line or remove it , where the line attaches the whole valve/ unit of some type of pressure adjuster turns. All 6 are at different levels. Some have 2 threads visible some have 3 or 4. So I dont think u just turn them in till they stop. But I am curious because I am going to try to rebuild the controller or clean the upper stick down port. But haveing each one of those at different levels makes me wonder why. If I could find a break down or a repair man . Or just a pic of how it work or the parts would make life way more simple. It's hard to find any info on it. and ofcourse the original manuals wer kept by the original owner. Any help is greatly appreciated. Or if u think of something I havent even the simple little things matter so any tips or tricks are always helpful. Thanks everyone .I'll attach pics tomorrow!
 

Jehinten

Well-Known Member
Location
Evansville
Thank you. Do u kno how the pressure adjustments work. Where the 1/4" lines come out of the bottom of the pistol grip hyd control. For each function. If u loosen the line or remove it , where the line attaches the whole valve/ unit of some type of pressure adjuster turns. All 6 are at different levels. Some have 2 threads visible some have 3 or 4. So I dont think u just turn them in till they stop. But I am curious because I am going to try to rebuild the controller or clean the upper stick down port. But haveing each one of those at different levels makes me wonder why. If I could find a break down or a repair man . Or just a pic of how it work or the parts would make life way more simple. It's hard to find any info on it. and ofcourse the original manuals wer kept by the original owner. Any help is greatly appreciated. Or if u think of something I havent even the simple little things matter so any tips or tricks are always helpful. Thanks everyone .I'll attach pics tomorrow!

If I remember correctly, there is only one adjustment for pressure at least on my system. ours could vary a little bit. Are the 6 adjustments that your looking at thumb screws? Pics would be helpful.
 

NyFarmboy

New Member
Location
Ticonderoga ny
So the last pic of the valve was the problem the tiny orifice was clogged with a peace of dirt of some sort. The 1/4" line attaches to it and it screws into the bottom of the main housing. I think it also adjusts the controll pressure. And the one u are thinking of controls the Main feed pressure to the controls. Its fairly simple to repaire or clean. That tiny hole in the valve is so small that almost anything could plug it. All other functions worked just not the maine stick down. I put it together. I Held the deadman switch on and bleed the lower thumb screw on the center lower control on the turntable. Or main hyd valve bank for maybe a minute till clear fluid came out. Tighten the thumb screw and hopped in the bucket and all the well. It goes up and down with ease now. Oh before I forget about 2 threads showing on the 6 control lines on the pistol grip controler.the lower side . Seems to be the right pressure. If anyone takes out 1 of the 6 tumb screws on the Main valve body for bleeding purposes. Theirs a tiny ball behind the screw so u only need to turn it out 1 turn. U do not have to remove it. If u loose the ball u will have to find a screw to plug the draine port or it will leak fluid out of the threads of the thumb screws. Thanks for all the help. It was greatly appreciated.
 

Jehinten

Well-Known Member
Location
Evansville
So the last pic of the valve was the problem the tiny orifice was clogged with a peace of dirt of some sort. The 1/4" line attaches to it and it screws into the bottom of the main housing. I think it also adjusts the controll pressure. And the one u are thinking of controls the Main feed pressure to the controls. Its fairly simple to repaire or clean. That tiny hole in the valve is so small that almost anything could plug it. All other functions worked just not the maine stick down. I put it together. I Held the deadman switch on and bleed the lower thumb screw on the center lower control on the turntable. Or main hyd valve bank for maybe a minute till clear fluid came out. Tighten the thumb screw and hopped in the bucket and all the well. It goes up and down with ease now. Oh before I forget about 2 threads showing on the 6 control lines on the pistol grip controler.the lower side . Seems to be the right pressure. If anyone takes out 1 of the 6 tumb screws on the Main valve body for bleeding purposes. Theirs a tiny ball behind the screw so u only need to turn it out 1 turn. U do not have to remove it. If u loose the ball u will have to find a screw to plug the draine port or it will leak fluid out of the threads of the thumb screws. Thanks for all the help. It was greatly appreciated.
Congratulations on the fix.
 

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