changing gasket on slick mag

[jrs14855]

Seven posts NO ONE has questioned whether or not this is an impulse mag.

[pa38112]

In theory it should work. I say try it.
When done with the pin, you remove the pin prior to installation, so all it does is give you a good starting reference - which you will already have before you remove yours.
Having said that, it is likely that you will accidently turn it during removal or installation. If you get it aligned with the right gear tooth and use your mark, it will be correct.
Do you have a mag synchronizer? I assume not since you asked the question in the first place. Even if you do it this way, I would want to confirm synchronization afterwards.

[deek]

I've done something similar dozens of times on several EZ's - but not for the same reason as the OP. Most EZ's don't have enough mag to firewall clearance to permit removal/installation of the harness - so...

? mark location of mag case relative to the accessory case with a Sharpie or scribe
? while NOT moving the prop, carefully remove the mag with harness cap intact
? while not moving the mag (or prop), install new gasket and reinstall the mag with the nuts hand tight
? now, you MUST check the mag timing with a synchronizer - you will be close but probably not close enough.

That said, if properly installed, mag gaskets rarely leak. I use DC-4

The RV's I've worked on thankfully offer much better access, so my response is probably moot. Ask any EZ driver if he'd rather change a mag or have a root canal

[david.perl]

Thanks for all your responses

The gasket was indeed torn when we replaced it.

We did as the majority suggested, used the timing pin to hold the internal gear and replaced the gasket then retimed the mag

It took 10 mins longer to removed the rear cap and install the pin, still 10 mins is 10 mins!

My question was based less on the time issue and more about trying to understand the inner workings of the mag, such that the pin needs using even with minimal movement of the gear when replacing the gasket.