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Old 10-06-2019, 02:01 AM   #1
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Identification issue

Could someone please identify the item (coupling,
bearings??) situated along drive shaft about 3 ft behind the transmission on a Cummins 3208?? Is it normal for the fitting to leak a little water?
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Old 10-06-2019, 02:54 AM   #2
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The reflected part was confusing me until I saw the 2nd picture.

The part that passes the shaft through the hull is the shaft log and then the assembly just forward of that is the packing gland. Yours is different than mine so I won't pretend to be an expert. Some dripping when the shaft is turning is normal. The packing nut is usually adjusted so that there is no dripping when the shaft isn't turning. (Yours isn't a packing nut, so not sure what it's called.) That hose may indicate it's a 'dripless' type so not supposed to normally drip.

Someone with more experience with your hardware will come along soon.
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Old 10-06-2019, 03:26 AM   #3
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Methinks a stuffing box that drips, and behind a 3208??? Cummins just could just be someone having us on, not even April 1st.
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Old 10-06-2019, 03:48 AM   #4
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Thanks for the reply.
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Old 10-06-2019, 04:07 AM   #5
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Must be an early April fools. Sorry it's a Cat 3208.😳
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Old 10-06-2019, 04:15 AM   #6
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It’s a very normal stuffing box attached to a very abnormal Cummins. A slow drip while in use would be normal. If dripping while stationary some tightening is recommended. Just turn the nuts on both sides the same amount.
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Old 10-06-2019, 06:35 AM   #7
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When turning the nuts to tighten I turn them 1 wrench flat at a time, in other words 1/6 of a turn at a time. Run for a while and re check. I want a slow drip and cool running. If that means a very slow drip when not running I'm OK with that.
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Old 10-06-2019, 03:23 PM   #8
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Thanks. I'll try that and let you know.
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Old 10-06-2019, 03:43 PM   #9
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They are very common. Google "compression flange type stuffing box"

https://www.google.com/search?q=comp...w=1242&bih=597
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