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Old 03-07-2012, 18:48   #1
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Sucking Oil out of a Perkins Marine Engine

I read a couple of threads about sucking the oil out of a Perkins 4.108 diesel marine engine but it would not work on mine - any one with an old perkins 1960's I think - please help - MVR
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Old 03-07-2012, 18:51   #2
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Re: Sucking Oil out of a Perkins Marine Engine

I really dont understand your question??
You mean a way to drain the crank oil?
Or the oil vapors coming for the breather?
Orr??
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Old 03-07-2012, 19:18   #3
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Re: Sucking Oil out of a Perkins Marine Engine

Thanks Neilpride for your reply, yes I mean draining the oil - I do not believe I can get to the bottom of the sump - I understand people who own a perkins like this one use a suction method to extract the oil for an oil change - does this help -RVM
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Old 03-07-2012, 19:25   #4
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Re: Sucking Oil out of a Perkins Marine Engine

Like this --
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Old 03-07-2012, 19:29   #5
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Re: Sucking Oil out of a Perkins Marine Engine

Are you warming up the engine before you try to suck out the oil?
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Old 03-07-2012, 19:31   #6
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Re: Sucking Oil out of a Perkins Marine Engine

Bingo - just like that but where does one stick the suction tube into - the dip stick hole is far too small - there is another type of opening on the other side with a cap of some sorts - previous owner has gone for a 6 months holiday so i am looking to my good friends in this community for help - MVR
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Old 03-07-2012, 19:33   #7
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Re: Sucking Oil out of a Perkins Marine Engine

Thanks Tellie, I have not got to that satage yet - looking for a hole to suck it out from - MVR
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Old 03-07-2012, 19:45   #8
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Re: Sucking Oil out of a Perkins Marine Engine

Hi guy,

you need the narrow tube that fits down the dipstick hole, which should have come with the vacuum unit.
Nearly all small marine engines require this method to remove the old oil.
Hope this helps I did my engines last weekend and it worked fine.
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Old 03-07-2012, 19:46   #9
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Re: Sucking Oil out of a Perkins Marine Engine

We have a 4108. We have changed the oil numerous times using a vacuum system similar to the one posted by Gybe. Warm up the oil (run the engine for 10-15 minutes). Insert the tube into the dipstick access hole. Start pumping. Easy.

The dipstick access tube is smaller than other engines I've worked on, so you need a smaller insert tube. Works fine though. You don't get 100% of the oil out using this method, but it's pretty good. Change your oil regularly and often. No problem.
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Old 03-07-2012, 19:48   #10
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Re: Sucking Oil out of a Perkins Marine Engine

My 4236 come with a drain pump in the starboard side of the engine , very easy and clean to drain the oil, i wonder if there is a pump in the market to fit in the 4108.
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Old 03-07-2012, 19:52   #11
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Re: Sucking Oil out of a Perkins Marine Engine

I mounted a small pump in the engine room with a hose small enough to go down the dip stick tube and it works great. This also allow me to use the same tube for the gear box and generator.
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Old 03-07-2012, 20:02   #12
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Re: Sucking Oil out of a Perkins Marine Engine

Thank You all, I got the picture - I am using an old portable dental suction machine which works well for sucking after wash water from my screen printing plates it should work well with the oil - thanks all - I will try it when next i am down at the boat - anyone know how much oil a Perkins 4.108 takes ???? - MVR
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Old 03-07-2012, 20:15   #13
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Re: Sucking Oil out of a Perkins Marine Engine

Mine take 2 gallons and half , anyway just pour to the top mark in the dipstick , change the filter to, and just my opinion but if you live in a hot climate this engines run well with a quality sae 40w monograde, if no leaks presents,, you can use 15w40 , nahhh use your favorite oil....
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Old 03-07-2012, 20:16   #14
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Re: Sucking Oil out of a Perkins Marine Engine

The hole to suck it out of is where the dipstick goes.
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Old 03-07-2012, 20:50   #15
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Re: Sucking Oil out of a Perkins Marine Engine

Thanks all - 2.5 Gallons around 9 litres
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