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chris_spring
Senior Member
Username: chris_spring
Post Number: 94
Registered: 02-2019
| | Posted on Sunday, January 17, 2021 - 02:12 pm: | 
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This might seem like kind of a dumb question, but I am curious how others manage greasing the main bearings.
On the Adams I am in the habit of using the calibrated wrist to tweak the greaser before start. Thereafter, I'll tweak them every 10 minutes or so. If I hear the engine bark through the crankcase, I'll tweak them again since barking can occur if the crankcase sucks air past a bearing.
I will say that the Adams throws a fair amount of grease. That could be normal, or it could be that I am too generous with the grease.
What do others do? Any tips on how to use greasers properly would be appreciated.
Cheers! |
miro
Senior Member
Username: miro
Post Number: 1115
Registered: 11-2001
| | Posted on Thursday, January 21, 2021 - 10:17 am: |
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I too, use a calibrated wrist. And yes the engine does poop out grease drops . I initially used a thin grease thinking that I wanted to make sure that there was lube on the bearings.
But in the past year or two, I've mixed water pump grease (almost a wax consistency) in with the thinner grease, to get the lube into the bearings and still provide a seal for the crankcase. Think of globules of thicker grease being transported into the bearing by the thinner grease.
I recall that the crankcase pressure can be about 5 psi which can be enough to cause the grease to be pushed out, however, there is a oil-rich mix in the crankcase which is also doing the lube.
I plan to take some measurements of crankcase pressure and vacuum this coming summer. I was given a vacuum guage on one of my Louisiana trips. |
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