engine Drip tray pump

[davehu]

On my boat we have a Buhk 20 mounted on a GRP plinth, the large flywheel at the front of the engine gives me no access to the drip tray and the clearance at the sides is less than the thickness of my hands. When I change the oil filter some oil finds its way into the tray no matter how much old rag I use. Also the engine sae water drain drains into the tray and I have not found a solution to stop this, I have tried most things to divert the flow into the bilge with limited sucess. Drying the tray out finally I usually use a nappy, but to pump out the main volume of the oily water is a problem. can anyone suggest a simple hand pump that I can use, it needs a long thin rigid spout.

Hoping someone out there heas had a similar problem and been able to solve it.

 

[cliff]

Pela type vacuum pump.
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"Artificial intelligence is no match for natural stupidity"
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[rogerthebodger]

Have a look at one of these

Details can be found here

 

[jerryat]

Cliff's idea is fine, but I reckon prevention is better than cure. I drain the oil from my Bukh engine in the 'usual' way (i.e. pump it out through the dipstick hole) which removes the vast majority.

Then I turn the engine over a few times by hand (decomp lever on!) to pump as much oil as possible out of the filter - it's amazing how much the damned thing holds!! I then push plenty of newpaper under the engine, topped off with a old piece of cloth - towel type is best.

Unscrew the oil filter and drop it quickly into a container, then hold the towel against the aperature until the last few drips have stopped. The newspaper is there as a back-up and to hold the towel in place.

I generally find that a couple of paper kitchen towels are then enough to clean up any residual oil.

The solution to the drain-down water is relatively simple. Remove the plug from the block and screw in one with a hosetail. Do the same on the underside of the exhaust manifold. If you connect a heater-type hose between the two, you can drain down without spilling more than a dribble at 'drain-down time' by detaching the hose at the manifold end. Hold a container underneath, remove the hose and, once the manifold is drained, simply lower the hose gradually over the container (emptying as necessary) until the block is empty.

Of course if, like us, you have these connections already for heating a calorifier, there are no mods needed!

The drain-down solution does assume you have adequate access to the starboard side of the engine. If not, then Cliff's solution is fine, though you could always use the Bukh supplied oil pump you use to remove the oil/water from the sump.

 

[davehu]

I like that idea Jerryat, I dont have a calorifier and the manifold drain is pig to get at but I have managed to solve that one. The block drain is the one I need to solve. Suppose I use your heater pipe idea with a pipe going nowhere and blocked off but long enough to be raised obove the top of the block enough to unplug it and put the end in a container then lower it until all is drained. The pipe could be secured somewhere when the engine is in use. Do you think that would work. Is your engine a Buhk 20, do you happen to know the drain plug thread size, 1/4 bsp perhaps.or is it metric

 

[RobBrown]

2 points in your post which have interest for me!
I've got an old Bukh 20 DVE but have yet to do an oil change- I had assumed I needed to get something like Cliff's Pela Pump suggestion to drain from the dipstick, but you are the second person to have mentioned a Bukh supplied oil pump for draining. Is this actually fitted on the engne somewhere? If so, can you enlighten me as to whereabouts?!
Secondly, I currently only have cold water supply. I had vague ideas about installing a calorifier, but as a direct raw water cooled engine, I understood it would not really be possible to do so. I guess your installation says otherwise?

 

[jerryat]

Hi Dave,

Yes, my engine is a 20hp and yes, putting a 'dead end' pipe connected to a hose-tail connecter screwed into the block side in lieu of the plug works fine! I did it that way before I put the hot water heating system in.

I'm sorry, but I don't know the size of the plug or it's thread, so can't help you there, though I think it's metric. I suggest you take the plug along to your local plumbing supplier and get the hose type connection there. That's what I did and it cost a lot less than the swindlery wanted.

The alternative is to ring Al Pearson or Norman Griffiths (Bukh Diesel UK 01202 668840) and see if they do them. As it happens, I'm meeting Norman tomorrow, so will ask him and PM you the answer.

Jerry

 

[jerryat]

Hi secondaffaire,

The 'original equipment' pump wasn't fixed to the engine, but looked like the one in the piccy, though of higher quality.

You can most definitely install a first class hot water installation using your engine. Indeed, although we have just installed a new 24hp Bukh, the previous 20hp provided hot water for many years while cruising.

PM me if you'd like more detail of the installation as it's a bit too 'long-winded' to include in this post. I'm flat out until midweek but will reply asap.

Jerry

 

[Poignard]

I think it's 1/4" BSP.

The BUKH Parts Manual shows a drain cock that was fitted to very early models. Might be useful if you wished to fill a hot water bottle!?

 

[jerryat]

""Might be useful if you wished to fill a hot water bottle!? "" LOL /forums/images/graemlins/laugh.gif /forums/images/graemlins/laugh.gif /forums/images/graemlins/laugh.gif /forums/images/graemlins/laugh.gif

 

[RobBrown]

As suggested, I have PMed you. Many thanks for the offer. On the manual oil pump front, I certainly don't have the original Bukh pump, but 3rd or 4th owner, so not surprising. I guess I'll need to invest in a Pela.

Interestingly, I did one of Tony Brooks 2 day marine diesel engine courses recently and he mentioned that at least on some Bukh engines there is a manual oil drain pump built on to the engine, which is what I thought you might be referring to. Nothing on my old Bukh tho', so far as I can tell.

 

[Poignard]

The Pela pump is also useful for other draining operations such as emptying the gearbox [if the drain plug is in a difficult-to-reach place] and, on my boat, getting the last bit of water out of the bilge sump that the bilge pump won't shift.

 

[jerryat]

Hi Rob,

I spent most of today with Norman Griffiths of Bukh Diesel UK - a really super and incredibly knowledgeable chap - and asked him loads of questions etc, one of which was why the hell didn't Bukh provide their engines with a fixed pump as other manufacturers do.

Apparently they DO provide them for the 36hp upwards, but not for the small ones! Pain eh? /forums/images/graemlins/frown.gif

Have PM'd you again re the HW installation.

Regards Jerry