QSC 500 – front of engine oil leak

[frank corcoran]

Began noticing a few weeks ago, oil splatter on bilge floor directly below front of port engine. Appears to be a leak from a seal which then gets flung around. Is there a seal or gasket in this area behind the vibration damper? Thanks, Frank

Topic

[Tom Bartolomei]

Hello all. Is there a part number and general procedure for this replacement? I also have a weeping leak that I’d like to rectify.

Thanks
Tom

[Mike Mason]

part#

Do you have the part number for the seal? I need to replace mine.

can you give me a quick rundown of the process.

Thanks

Mike

[Andre Huizing]

Yes, you need to remove the belt and pully (4 bolts I believe). Then you can access the seal case.

1 user thanked author for this post.

Tony Athens

[frank corcoran]

Andre –

I ordered and received the oil seal part and reviewed Cummins install literature. One question: did you need to remove the drive belt to replace the seal?
Thanks,

Frank

[frank corcoran]

Thanks Andre. I will track down the part # in the online Cummins manual. Thanks again.

[Andre Huizing]

Yes, however when you unscrew the bolts it’s easy to get off. No “pulling” involved.

[frank corcoran]

Andre,

Thank you. Do I need to pull the vibration damper pulley to change the seal?

[Andre Huizing]

Yes, the main crankshaft seal. I just replaced mine. Easy job as the seal comes with its full encasing.
Good luck!

[Author]

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