I'm having a bit of a Bendix mag drive gear issue. I'm replacing some older Slick mags on my 0-320 with Bendix S4LN-21 mags. On the left mag I installed the impulse drive gear from the left slick mag onto the bendix impulse coupling without issue. Everything fit up just fine.
However after I removed the impulse coupling from the other bendix mag to use on the right side I have issues. The non impulse drive gear sets much to low on the mag shaft and the setup is just wrong. In researching the Bendix overhaul manual to see if I might be missing a spacer or something, to no avail, as well as looking up drive gear part numbers. I appears the drive gears should be interchangeable. I'm of the conclusion that the Bendix mag I have can only be used with an impulse coupling or perhaps the drive gear I removed from the Slick mag is just incorrect for the application. If there is a drive gear, that does not have a taper bore, and would set on the straight area of the mag shaft then things would line up just fine it appears. I however have never seen such gear.
If anyone can provide me with some insight here it sure would help. I'm at that point where I cant see the forest for the trees.
However after I removed the impulse coupling from the other bendix mag to use on the right side I have issues. The non impulse drive gear sets much to low on the mag shaft and the setup is just wrong. In researching the Bendix overhaul manual to see if I might be missing a spacer or something, to no avail, as well as looking up drive gear part numbers. I appears the drive gears should be interchangeable. I'm of the conclusion that the Bendix mag I have can only be used with an impulse coupling or perhaps the drive gear I removed from the Slick mag is just incorrect for the application. If there is a drive gear, that does not have a taper bore, and would set on the straight area of the mag shaft then things would line up just fine it appears. I however have never seen such gear.
If anyone can provide me with some insight here it sure would help. I'm at that point where I cant see the forest for the trees.