anyone familiar with high ranger bucket trucks

[spo307]

wrong fluid was put in aw46 hydraulic oil is too thick to pass port holes from pistol grip tubing, i was told to drain change filters and fill with ATF, this boom will be used for siding and roofing, no electrical work, sound correct

 

[CJONE]

I could see this happening in winter but it should not be a problem in summer, the 46 is a 15 wt oil. I would contact High Ranger they were very helpful to me a few years ago with hose specs. CJ

 

[spo307]

thats what i am gonna do thanks for the reply

 

[spo307]

I contacted terex which now owns hi ranger aw 46 is a 20w oil, port holes in valves from pistol grip are small, fluid is too thick to pass fast so bucket controls are slow or dont work

 

[CJONE]

I contacted terex which now owns hi ranger aw 46 is a 20w oil, port holes in valves from pistol grip are small, fluid is too thick to pass fast so bucket controls are slow or dont work

AW32 is approximate a 10wt oil, AW46 is app a 15wt oil and AW68 is app a 20wt oil. Trans fliud is about a 7.5 wt. If you feel this will fix the problem go with whatever is cheapest. Just a FYI dextron 2/3 is the only oil Dennision recommends for their piston units, that is what I would use if you go with trans oil. Let us know the results. CJ

 

[spo307]

What is dextron 2/3?

 

[spo307]

ATF? I have heard hi ranger oemm fluid is mil spec 5606, but at fluid change they use atf due to cost, my neighbor has a 1976 hi ranger and uses hy tran $32 for 5 gallons

 

[CJONE]

Dextron 2 or 3 I think they are up to 4 now, it is a GM auto trans fluid. Didn't you post say they suggested it? CJ

 

[ericher69]

Dextron 2 or 3 I think they are up to 4 now, it is a GM auto trans fluid. Didn't you post say they suggested it? CJ

Dextron XI is the latest

 

[J_J]

Maybe the latest is not the best.

Automatic transmission fluid - Wikipedia, the free encyclopedia

Might be a good idea to use an ATF from the time period of the manufacture of the high ranger trucks.

 

[spo307]

Dextron 2 or 3 I think they are up to 4 now, it is a GM auto trans fluid. Didn't you post say they suggested it? CJ

Yes they did suggest it, but as the web is full of info, and a bucket truck site they were totally against using it, sometimes too much info is no good lol

 

[CJONE]

Yes they did suggest it, but as the web is full of info, and a bucket truck site they were totally against using it, sometimes too much info is no good lol

Not a case of too much info just what is correct and what is a opinion. I like to go with experience and manufacturers info. I still really wonder if the weight of the fluid would cause a 500psi pilot system not to function in 80 degree weather. I could "possibly" see if it was a 40wt gear lube but if it is a 15wt oil it should at least function but slow in a worst case. Test your pilot supply pressure going up to the bucket, see if it is switching from ground to pilot controls. CJ

 

[wdchyd]

ATF? I have heard hi ranger oemm fluid is mil spec 5606, but at fluid change they use atf due to cost, my neighbor has a 1976 hi ranger and uses hy tran $32 for 5 gallons

Mil spec 5606 oil is for low-temp/cold weather use...(aircraft oil)....same as Mobil Aero-HFA.......thin as water, very $$$$.......Just bought a 55 gal drum at just under $2200.

Hopefully you won't need that stuff

 

[del10820]

Shell T-22 is a bucket truck hyd oil .It is thiner than AW32 , but T-22 is too heavy for some early HI-Rangers unless it is pretty hot out side. It does not work if it is freezing out side.

 

[spo307]

Not a case of too much info just what is correct and what is a opinion. I like to go with experience and manufacturers info. I still really wonder if the weight of the fluid would cause a 500psi pilot system not to function in 80 degree weather. I could "possibly" see if it was a 40wt gear lube but if it is a 15wt oil it should at least function but slow in a worst case. Test your pilot supply pressure going up to the bucket, see if it is switching from ground to pilot controls. CJ

Terex that now owns hi ranger told me if you use aw46, their will be slow or non movement from bucket controls, ground controls work fine, when i move bucket controls move about a 1/2" and boom raises real slow, they said the port holes were 1/4" tubing connects are real small, the bucket worked fine before hyd hose broke, and 5 gal of aw46 added, thanks for the replys, i will post reeults after flush and filter changes