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SmilinSam

Lombardini is running- AC 920 Simplicity 7790 que

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SmilinSam
I got the 7790 running today. It starts reliably but has a intermittent clatter like metal on metal. The engine mounts are real loose specifically the two side rubber bushings on the front mount. I also notice the pump case is riding on the tractor frame. Wondering if tightening up things might help. Are the front side engine mount bushings supposed to be pulled tight? If so how is this acccomplished. What other mount bushings are there and where? Sound could be internal but it does not sound like the proverbial knocking associated with bad rod bearings. Any other ideas?? Sam

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jlasater
I'm not familiar with the Lombardini diesel engines, but every diesel we have on the farm rattles like crazy at idle when no load is present. No diesel ever runs as smooth sounding as a gas engine, it's just part of their character.[A href='http://www.wheatfarm.com']http://www.wheatfarm.com[/a]

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SmilinSam
This sound does not really show itself at idle , more at higher rpm. Sounds like someone hitting a piece of aluminum with a hammer. I'm approaching it first from the idea that maybe the block is hitting the frame somewhere. So I'll try tightening and repairing the rubber mounts, then see where we are at. If that does nothing it must be internal.

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