Saw somebody talk about this on another forum, which sparked my curiosity so I figured I would get all of your thoughts on it.
2004 Mercruiser 4.3l with Alpha1/Gen2 drive
Pulled my drive and replaced seals on it recently. In doing so I needed to drain all of my gear lube. I also found a small leak in the bottom of my gear lube monitor where the two sender wires come out of the nut to go the alarm. So I ordered and installed a new monitor.
Anyways, I now need to fill up my gear lube. The drive is completely empty of lube, as is the monitor. Somebody mentioned the best way to fill this is two keep the top vent plug in, unscrew the monitor cap, and then pump oil into the bottom fill plug as you normally would. Fill until the bottom of the monitor/resoivoir fills then finish by topping off the monitor from the top after capping the drive fill plug. In doing so, you eliminate all air in the system and don’t have to worry about the system burping and having to top off your oil reservoir at some point.
Seems like great logic to me. Just wondering what your thoughts were.
This of course is opposed to what I assume is the industry standard way of pumping lube through the bottom fill hole until lube begins to run out the vent. Then capping both, followed by filling the monitor from the top. But as I said before, logic would tell me that in doing this you would trap a hose worth of air in system.
2004 Mercruiser 4.3l with Alpha1/Gen2 drive
Pulled my drive and replaced seals on it recently. In doing so I needed to drain all of my gear lube. I also found a small leak in the bottom of my gear lube monitor where the two sender wires come out of the nut to go the alarm. So I ordered and installed a new monitor.
Anyways, I now need to fill up my gear lube. The drive is completely empty of lube, as is the monitor. Somebody mentioned the best way to fill this is two keep the top vent plug in, unscrew the monitor cap, and then pump oil into the bottom fill plug as you normally would. Fill until the bottom of the monitor/resoivoir fills then finish by topping off the monitor from the top after capping the drive fill plug. In doing so, you eliminate all air in the system and don’t have to worry about the system burping and having to top off your oil reservoir at some point.
Seems like great logic to me. Just wondering what your thoughts were.
This of course is opposed to what I assume is the industry standard way of pumping lube through the bottom fill hole until lube begins to run out the vent. Then capping both, followed by filling the monitor from the top. But as I said before, logic would tell me that in doing this you would trap a hose worth of air in system.
