I’ll bench test this Rotax 582 Mikuni fuel pump, locate the issue and repair the pump. Then I’ll bench test the repair prior to returning the pump to the customer.
Did you know that you are using the wrong screw driver? A regular philips works but doesn't fit well, and is apt to strip the screw heads. The proper driver is a JIS (Japanese Industrial Standard), identified by a punch mark on the screw head. The carburetors use another type of screw that also looks like a philips, but isn't. These are pozidriv heads, marked with cross dashes. Would be nice if a standard "philips looking" screw head was developed and used internationally to eliminate these special tools and associated problems (stripping heads).
I reviewed the video and I believe I’m using a pozidriv screw driver. Your are very correct as the regular Philips is a very poor fit. Thank you for your comment, that’s good information.
The correct screwdriver for the pulse pump is a JIS (Japanese Industrial Standard), identified by a punch mark on the screw head. Not trying to be critical. I just learned about the difference in these screwdrivers myself so just wanted to pass it on. It certainly explains why I've have trouble over the years with Japanese screws on motorcycles and other stuff made in Japan. I really enjoy your videos . . . thank you!
Great video! Have you ever tried a DF52-82 fuel pump on a rotax 582? I want to use it because it incorporates a pressure regulator that prevents flooding the carburetors.
Excellent! Just what I was looking for. Where can I get the gauge and insertion tool like yours? Prior to watching, I thought the tiny hole in the pulse line was to "tattle tale" when the pump failed as indicated by fuel coming out. But as you said, it's also to drain accumulated oil that comes in through the pulse line. This explains the oily area under the pump on my 503. The pump on my 582 isn't mounted with the pin hole down. Maybe that's why I am not getting as much pressure from it. I have pressure gauges mounted on my aircraft to monitor fuel pressure. My 582 runs at only 2.5psi, 4.5psi with the inline electric pump on too. So I think a diagram is bad. Thanks for a great video! Also, what is your parts "wash" process?
I just checked to see about getting a rebuild kit for my pump (same as you did herein the video) and they don't sell them anymore at Leading Edge Airfoil company in Wisconsin.
I recommend mounting the fuel pump with the tiny pulse line drain hole facing down . The pulse line must be no longer than 20 inch's, however try to keep it as short as possible for the best pump operation
@@robertwalker2568 The Mikuni fuel pumps seen to operate fine when mounted vertically. Is that mounting correct? No it’s not correct because any acquired liquid inside the pump won’t drain out. The small drain hole is a safety feature required by Rotax.
Glad you enjoyed it. The very best part of the attempted fuel pump overhaul is the engine wouldn’t start! Why? who know what else the owner’s servicing agent worked on. This “Challenger” is now being professionally inspected before its next flight.
