slow moving rams?
 

ok my converted bruder excavator has developed a problem the rams all move slow, the power is there and the pump is spinning fast to fast but the movement seems to be slow and in time with the pump.

im using the magome hrc kit and and a flysky radio. in the thing. been working really good for a while now starting to be a problem any help? or idea what can be causing this? and i'm still in search for something other than anti freeze to run as hydraulic fluid.

Re: slow moving rams?
 

I could be wrong but just thinking seems like the antifreeze would get sticky over time ,Mabey drain it out try running some ISO 22 or 32 Lightweight hyd oil may free it up just a thought

Re: slow moving rams?
 

where can i get iso 22-32?

Re: slow moving rams?
 

any tractor supply /hardware store or even amazon
http://www.amazon.com/Renewable-Lubr...+hydraulic+oil

Re: slow moving rams?
 

Here's the link at rc4wd whats used in there excavator
http://store.rc4wd.com/Shell-Tellus-...oz_p_3837.html

Re: slow moving rams?
 

the big thing is how thin is it? i think thats why mangom hrc use antifreeze because its thin, but i don't think antifreeze had enough "hardness" to it or lubes enough because
it will still let the little brass gears wear out after a while, and i use my excavator about
every weekend.

Re: slow moving rams?
 

Would ATF be ok? or is it too thin as well?

Re: slow moving rams?
 

I would highly recommend to use the right hydraulic fluid with this, ISO 22 or 32 hydraulic fluid should be used. I use the them fluid in my excavator. ATF is not the right think either.

Re: slow moving rams?
 

ya that i know, atf is way to thick. and its hard on seals and some metals, i put iso 32 in it
i couldn't find any 22, jack oil is iso 32 says the cute lady at the autoparts store. seems to be working good, i also just orderd so new o-ring had to kind of best guess i live in a standard world and these are metric so using a chart took best guess , hey it was only 7$ for 200 so what the H

Re: slow moving rams?
 

I think it will be a got idea to change out o-rings and then fill up with the ISO32. Premacon, Scaleart or Leimbach sale ISO 22 or 15 for this application.

I got some O-Rings as well for my valve body steam a few months a go and they come only in a bulk of 100. Now I have enough for many years.:lol:

Re: slow moving rams?
 

update:
the oild worked great in my dump trucks, but not good at all in the excavator.
it just gummed up the works, and after a few days made it move slower and with less power...? anyway going back to antfreeze for now, unless i can find something even thinner, this oil has to be as thin as water no bulk to the oil at all !