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Old 24-01-17, 02:22 AM   #11
ListerHA2
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I'm only guessing but the milled grooves appear to be there to channel oil from the bearings back to the crankcase. I would also guess the grease remnants are from initial assembly to ensure some lubrication as splash system may take a while to reach the far bearing?

I suppose the ball race could be replaced with a new double seal bearing if in any doubt.

Last edited by ListerHA2; 24-01-17 at 02:25 AM.
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Old 24-01-17, 02:58 AM   #12
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Only problem is the oil channel was packed with old grease, so no oil was ever going to get up there.
I suppose I could grease pack the bearing balls and rollers, but make sure the channel is open for oil in and out ?
I did consider new bearings, but I'd rather not spend any money on it unless essential, all my money seems to going on the ST P5

Neil. :)
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Old 24-01-17, 08:17 AM   #13
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Neil,

Do you know what the compressor was being driven by originally? If running slow, it may have been found necessary to pack the bearings with grease.

Phill.
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Old 24-01-17, 08:46 AM   #14
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Not got a clue Phill, came with a 4 inch V pulley is all I have to go on.
I was thinking with all the ball and roller races, along with it being a
2 inch bore and having less than a " stroke it would be intended to
be run a fair speed, maybe 1000rpm at least ?

Neil.
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Old 24-01-17, 08:55 AM   #15
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I'd say they should have grease in as I reckon the outer bearing is too far from the crank dipper to get enough oil to it.

But then again I could be wrong.
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Old 24-01-17, 09:03 AM   #16
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Quote:
Originally Posted by Appletop View Post
I'd say they should have grease in as I reckon the outer bearing is too far from the crank dipper to get enough oil to it.

But then again I could be wrong.
I think you are probably right, but why the drain channel in the crank case ?

Neil.
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Old 24-01-17, 09:20 AM   #17
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To fill with grease and muck and keep people like us guessing??
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Old 24-01-17, 09:26 AM   #18
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Quote:
Originally Posted by Appletop View Post
To fill with grease and muck and keep people like us guessing??
Quote:
Originally Posted by Appletop View Post

But then again I could be wrong.
Agreed

Neil.
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Old 24-01-17, 05:13 PM   #19
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A web search indicates a 'Heinrich Leo' was involved somewhere along the line.
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Old 25-01-17, 09:22 PM   #20
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Piston rings, there are two compression rings and an oil ring, normal engine type rings.
One ring has a step in it, a ridge dodger I assume ?
Thing is the stepped ring is fitted in the lower groove, and step faces down, doesn't seem right to me ?
This unit has been stripped before, or at least the top end has been off and loosely re-fitted, no base gasket, gudgeon pin retaining screw about to fall out and all nuts finger tight, the head gasket was tucked it side the alloy top cover, and is homemade also very thick, 1mm at least.
My instinct is to swap the rings around and glass bust the bore ?

Neil.
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