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Old 03-02-2016, 01:02 PM   #1
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Coolant Drain on Perkins 6.354M

I am trying to locate the drain plug for the coolant/antifreeze on a Perkins 6.354M. build date was about 1976. we can drain using the coolant line going to the heater in the fwd berth but we are thinking that will not get all of the coolant from the block. thank you for any help.
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Old 03-26-2016, 09:18 PM   #2
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Have a 1986 Jefferson with Perkins and I found the drain for the block to be over the starter on the starboard side of the block.. Had a rusted fitting which I replaced with a brass pipe with a valve and hose barb so I can drain with a hose into a bucket. Hope that helps.
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Old 03-26-2016, 09:47 PM   #3
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My drain tap is just above the oil dip stick
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Old 03-26-2016, 10:12 PM   #4
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There are normally a few places the coolant passages are tapped and plugged or with a valve. Look for plugs or drain cocks in the block down lower. You can pull any of them to see if it's coolant, worse case is it might be an oil passage in which case you might loose a few drops before you put it back in.
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Old 07-19-2019, 11:00 AM   #5
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Perkins 6.354 coolant purge with manicooler

I am wondering if there is any issue with draining and replacing coolant with the manicooler.
Any voids or blind sections that need special purging?

Thanks!
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Old 07-19-2019, 12:02 PM   #6
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I serviced both my 6.354st Perkins manicoolers a couple years ago. Block and Manicooler should drain with the plug near the starter as noted by others.
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Old 07-24-2019, 09:13 AM   #7
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Thanks Duvie
Been out awhile here.
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