Originally Posted by koan1123
used to be simple as flushing sum gas through the inlet to clean thes out but now its harder with that new white "greese" lubricant they put on all the fittings, to realy get rid of it u need to pull apart pump & clean the connections & mabe everywher solvent wets. my buddy dint open his, he just ran some bottles of ISO in by pushing it thro w a aircompressor, then ran few lbs gas thro.
that "death" chemy smell sounds like the yellow/white residue smelled but honestly it does not make its way into the tank. the smell was still slightly comming out my friend pump after he cleaned it, but the smell lessens each run & with absolutely no trace of smell in the tank or his product.
as for "venting crank case" sounds too advance for any sort of modding my buddy wanted to do to his new pump so instead i recomend what ive herd others are doing is to run a pot or tube After the pump with some sort filration in it so if Any baring/motor oil gets out the seals it will get trapped in that tube after the pump.
thats crazy lame u had to spend so much extra on the pump hopefully it works out in end
I haven't encountered any white or yellowish substances at all inside this thing. I have one of the original preorder models. Stock, there was only dark colored grease inside. And when bhogart rebuilt it, they used some light grey grease on the pistons and in the crankcase. They say they use 4 grams of grease in the crankcase on rebuilds, seems excessive. My trs21 has killed it for two years now with no rebuilds and never any lubrication. Always just clean the seals and pistons with alcohol and put back together.
In my situation the black grease from the original bearings was definitely getting into my tank and into my collection pot. The toxic smell would punch you in the face on a dry run. I think a lot of the smell now is coming from the piping on the machine and the bearings. There is a lot of black inside the piping on the whole machine which can only be wiped out, so the whole heat exchanger on this thing is trashed I suppose, as I dont know how you would clean it out. But I want to ditch the heat exchanger anyways, as it doesnt get that cool, traps a lot of solvent at the end of a run, and it doesnt pull gas away from the crankcase as quick as it could without it. Ive heard they run smoother and quieter without the stock heat exchanger.
Bhogart is willing to do the work again and only charge for parts with a 1 month turnaround. But its hard to say I wont have the same issues still, and they told me the same. Their pump tech said the smell coming out of the pump was abnormal and that he hadn't heard of that before. Same guy also said that flushing liquid butane through it probably allowed the bearings to get washed in solvent and that is why my crankcase is already dirty after a fresh rebuild. He said they cant tolerate liquid solvent. Sounds possible, but so many people are recommending to flush it out first. Probably gonna just have bhogart rebuild again, then cut off the heat exchanger and see how it works. Honestly, its hard to know about these things or how to properly run them, as ignorance is bliss, and bhogart is saying no vacuum ever, and xtractor depot is saying it will only shorten life and that it is okay. Will recovering into a vacuum contribute to bearing grease loss or contamination? Also hard to know if people know what they are talking about, Bhogart told me to leave the valves closed on the pump at the beginning, and to just pump all the atmoshpere in it into my tank!!!!! I know how to correctly bleed the lines out, but them telling me that caught me off guard.