Upper crank seal 303804 ’57 Lark Superseded?

This topic has 5 replies, 3 voices, and was last updated 9 years ago by mas.

Viewing 6 posts - 1 through 6 (of 6 total)

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December 29, 2016 at 3:22 am #5981
mas
Participant
US Member
Hi,

Just picked up a upper crank seal for my ’57 Lark. The original PN number 303804 was superseded to 321467 in a sealed OMC package…but doesn’t fit. The seal is too small and falls into the recess. Was it packaged wrong or is the superseded number wrong. I have cross referenced with Marine Engines…which shows the 321467 number…but I have found errors on their site too since their conversion.

Any help?

Happy Motoring,

Mas
December 29, 2016 at 3:29 am #49879
chris-p
Participant
Must have been packaged wrong? What does the seal measure?
December 29, 2016 at 5:01 am #49880
mas
Participant
US Member
Looks like 1 3/8 in diameter
December 29, 2016 at 5:12 am #49881
mas
Participant
US Member
OK…maybe I’m seeing this wrong. Does the seal fit into the upper crank bearing or the crankcase/block?
December 29, 2016 at 5:55 am #49882
frankr
Participant
I suspect you are seeing it wrong. It fits in the bearing shell.
December 29, 2016 at 6:00 am #49883
mas
Participant
US Member
That is what I began to realize after Chris asked for a measurement. I’m just getting back to my Lark rebuild and it looked like I hadn’t installed the upper seal at a quick glance. The large recess fooled me…thinking it needs to be filled with a seal.

I think I’m OK
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