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Thread: Cylinder clearance
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19-05-2009, 01:04 AM #1
Cylinder clearance
I have dismantled a 3E5F80 8 cylinder compressor which had a broken discharge valve.(This had recently been rebuilt) We have found that the effected cylinders piston has a shorter conrod,meaning the clearance above the piston is 20mm greater than the other cylinders.What would this do to the compressor besides reduce efficiency.Could this cause the valve damage?
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19-05-2009, 11:32 AM #2
Re: Cylinder clearance
this is not the cause of valve damage
because your valve does damage because of flappering
if you want to reduce the clearance you can use thick ring
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19-05-2009, 11:42 AM #3
Re: Cylinder clearance
freak ,
Do you mean 20 or 2mm clearance ?
If this clearance is higher than recommended , it would increase cylinder / piston heating .
Because not all ( hot ) gas is discharged from cylinder , and it can't
draw as much cool gas into cylinder .
Expect high temps in this cylinder , which would also reduce valve life due to overheating .
It could also increase oil consumption due to hi temps ,cylinder wear due to poor lubrication and gudgeon pin wear .
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20-05-2009, 12:54 AM #4
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20-05-2009, 12:55 AM #5
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