suevolpe@gmail.com Posted May 29, 2017 Report Share Posted May 29, 2017 hi all, new to the forum but have been living on a NB for the past 20 years moored on the GU south near bulls bridge. i have a RN DM3 (which i love) i generally do my own servicing oil / filters etc and have had many years of trouble free cruising. Having just dome the london ring i noticed a clicking coming for the water pump and a slight leak. i confess this is beyond my mechanicing skills so my question is does anyone know / recommend an engineer with RN experience in this area. many thanks Sue Link to comment Share on other sites More sharing options...
rupertbear Posted May 30, 2017 Report Share Posted May 30, 2017 Firstly, I envy you your DM3, as will many others here. I can suggest two courses of action for you: Join the RN Register http://www.rnregister.org.uk (£12 pa) then discuss your problem with the knowledgeable people on the RNR forum, they may well be able to help you sort the problem yourself. Or contact Ian Crompton (07831 841108) or Richard Milligan (07973 826260) who are RNR recommended engineers. Link to comment Share on other sites More sharing options...
suevolpe@gmail.com Posted May 30, 2017 Author Report Share Posted May 30, 2017 Really appreciated, will do as you suggest. great forum. Link to comment Share on other sites More sharing options...
Athy Posted May 30, 2017 Report Share Posted May 30, 2017 2 hours ago, rupertbear said: Firstly, I envy you your DM3, as will many others here. Yep! R.N.'s telephone number is 01327 700023. Link to comment Share on other sites More sharing options...
suevolpe@gmail.com Posted May 31, 2017 Author Report Share Posted May 31, 2017 many thanks, really appreciated. Link to comment Share on other sites More sharing options...
rupertbear Posted June 1, 2017 Report Share Posted June 1, 2017 Please let us know how you get on. Link to comment Share on other sites More sharing options...
Strads Posted June 3, 2017 Report Share Posted June 3, 2017 sue. hi in reading I assume you have a mechcanical water pump - there is a small grease cup - i assume you check/fill daily as required,,, I didnt realise that and mine let rip,,, and self destructed,,, I replaced with and electrical central heating pump (small marine type) wasnt that cheap but 8 years since,, without knowing how yours is plumbed in,,, i cant be specific,,, but mine was a dm3,,, so sympathise cheers john Link to comment Share on other sites More sharing options...
Jrtm Posted June 17, 2017 Report Share Posted June 17, 2017 Youll prob find the same as mine the water pump valves will be marked from years of use! They need to be moved around abit. You may even find swapping the valves from the bilge pump is better, the clicking is the valve getting stuck and the other hitting it mine was a miss beat noise as it would get stuck randomly i swapped with bilge one as these had hardly any use so will make both pumps last another 80 years Link to comment Share on other sites More sharing options...
Strads Posted March 3, 2021 Report Share Posted March 3, 2021 what a load of bolleaux.. rather depends on how weird your boat and its equipment actually is. as in what RN fitting are you twatting on about?? bilge pump is just that, they dont generally use the engine,,,,,, Link to comment Share on other sites More sharing options...
Tony Brooks Posted March 3, 2021 Report Share Posted March 3, 2021 34 minutes ago, Strads said: what a load of bolleaux.. rather depends on how weird your boat and its equipment actually is. as in what RN fitting are you twatting on about?? bilge pump is just that, they dont generally use the engine,,,,,, What an odd post some four years late. Are you sure RN never offered and engine driven bilge pump option? 1 Link to comment Share on other sites More sharing options...
Tim Lewis Posted March 3, 2021 Report Share Posted March 3, 2021 38 minutes ago, Strads said: what a load of bolleaux.. rather depends on how weird your boat and its equipment actually is. as in what RN fitting are you twatting on about?? bilge pump is just that, they dont generally use the engine,,,,,, For your education an engine run bilge pump (National DM2) 1 Link to comment Share on other sites More sharing options...
Strads Posted March 3, 2021 Report Share Posted March 3, 2021 Tony,, it may appear that way to you, but having owned one for 17 years and seen quite a few.. (probably 40 plus in engine holes and knowing the Dave at RN no one has had an engine powered bilge pump. Thanks,, just show's there is a variant out there,,, they do look like non original pumps etc, but may well be from as new in time my oil pump (RN ) is in that approx location.. Link to comment Share on other sites More sharing options...
Tony Brooks Posted March 3, 2021 Report Share Posted March 3, 2021 2 minutes ago, Strads said: Tony,, it may appear that way to you, but having owned one for 17 years and seen quite a few.. (probably 40 plus in engine holes and knowing the Dave at RN no one has had an engine powered bilge pump. Except @Tim Lewis has posted a photo of the national version of that engine. You should only make such a definite statement and borderline abuse when you have seen all the option and looked at the OP's and @billybobbooth's engine. As RNs went into all sorts of craft, including sea going wooden boats I don't see how you can be so positive. I accept it might turn out such pumps were only fitted to the National version but I rather doubt it. 1 Link to comment Share on other sites More sharing options...
Strads Posted March 3, 2021 Report Share Posted March 3, 2021 Tony, you like me are able to read, note, comment according to how you find/see things,,, that is what I did, without being rude, I except that my experience may not be as wide as some, but also certain individuals claim to been there and sorted it when they havnt.. either,,, Link to comment Share on other sites More sharing options...
magnetman Posted March 3, 2021 Report Share Posted March 3, 2021 (edited) Out of interest the engine mentioned in the OP is a D3 which was later marinised, not a DM3. I know the boat and at the time I met the previous owner I had a DM2 in my narrow boat so was rather interested in other boats with RN engines. This was mid nineties when the boat was new and the owner had just fitted an ex industrial RN D3 into it. Edited March 3, 2021 by magnetman Link to comment Share on other sites More sharing options...
Jrtm Posted March 3, 2021 Report Share Posted March 3, 2021 1 hour ago, Tony Brooks said: Except @Tim Lewis has posted a photo of the national version of that engine. You should only make such a definite statement and borderline abuse when you have seen all the option and looked at the OP's and @billybobbooth's engine. As RNs went into all sorts of craft, including sea going wooden boats I don't see how you can be so positive. I accept it might turn out such pumps were only fitted to the National version but I rather doubt it. Mine is a national but has a bilge pump side same as the one posted by Tim. Mine was fully working but as my engine water pump side was shot I had to use the bilge side to fix my engine side, you can't swap everything as my plungers in the pump were different sizes. It will be put back to a bilge pump but also plummed in with stop cocks so I can use it as a second engine pump. Link to comment Share on other sites More sharing options...
Jrtm Posted March 3, 2021 Report Share Posted March 3, 2021 Also when you look at this engine it seams to have 2 pumps fitted, 1 clearly goes to the block I can't see other side. https://www.ephotozine.com/photo/russell-newbery-diesel-engine-47771684 Link to comment Share on other sites More sharing options...
Man 'o Kent Posted March 3, 2021 Report Share Posted March 3, 2021 I can confirm, my old National (1936) has very much the same arrangement as depicted. one bilge pump, one engine coolant pump, (raw water cooling). Link to comment Share on other sites More sharing options...
BWM Posted March 3, 2021 Report Share Posted March 3, 2021 4 hours ago, Strads said: what a load of bolleaux.. rather depends on how weird your boat and its equipment actually is. as in what RN fitting are you twatting on about?? bilge pump is just that, they dont generally use the engine,,,,,, A very pompous and inaccurate response to someone's input, engine driven bilge pumps are very common on marine diesels of the period. Standard fit on the majority of marine JPs and many of the RN/National engines i've seen. Link to comment Share on other sites More sharing options...
billh Posted March 3, 2021 Report Share Posted March 3, 2021 Kelvins used to have an engine driven "wash pump" for clearing the deck of fish guts etc through the scuppers. Could also be used for putting fires out ? Some 4cylinder models have 2 uniflow cooling pumps but no bilge pump All the DM2 Nationals I've seen have bilge and cooling pumps as per picture with a dog clutch to bilge pump 1 Link to comment Share on other sites More sharing options...
BWM Posted March 3, 2021 Report Share Posted March 3, 2021 This is a combined pump on my Jp3, the left side being the bilge pump part of the body. Link to comment Share on other sites More sharing options...
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