by rbolton6 on Thu Nov 11, 2010 7:30 pm
You are correct, the fella at Sun Optics is a super friendly gentleman !!
I called him about my pump and he promptly sent me free of charge a whole new set of O rings - Even extra "part # 30" rings that are the cause of 99% of all the pumps problems.
He explained the instructions and a few shortcuts once I received the rings.
Replacing that nasty little ring only takes a bout 15 minutes, but cleaning all the crud from the pump took quite a while.
He advised using 10-40w motor oil for all lubrication.
After replacing that ring and a complete clean and re-lub, it is working better than ever.
DON'T GIVE UP ON THOSE BENJAMIN PUMPS - JUST CALL SUN-OPTICS !!!