merc alpha, pressure check after impeller?

[sickwilly]

I am doing the impeller on my merc 4.3, alpha 1 (2004) for the first time, at 100 hours.

Do you all always pressure check your outdrive after wards?

 

[Don S]

Re: merc alpha, pressure check after impeller?

Absolutely. The only other way of knowing is something didn't work (or you forgot to install the quad ring) is when the drive fails.

Your Choice.

 

[sickwilly]

Re: merc alpha, pressure check after impeller?

Thanks! Will do.

 

[bpmcl00]

Re: merc alpha, pressure check after impeller?

how would one go about checking the pressure? just fire it up on a hose and make sure everyhting is running smoothly?

 

[Fishermark]

Re: merc alpha, pressure check after impeller?

Before refilling it with lube, you pressurize the system with air and see if it holds. If you do a search you can see where someone had details on how to make a home made gauge set up - or you can buy one specially for the job.

 

[sickwilly]

Re: merc alpha, pressure check after impeller?

I found a pressure tester on ebay for $37 bucks with shipping. On my alpha I gen II it looks like you basically thread it in where the vent screw goes and pressurize it with air, while the outdrive is removed from the boat (since I have the gear lube reservoir).