Leak from Injection pump

Bodach na mara

Bodach na mara

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I have a leak from the throttle shaft of my CAV type DPA Hydraulic governer injection pump. From a trawl on the web it seems that this is quite a common complaint and there are lots of people out there looking for parts lists, suppliers and manuals. The only "manual" I have found is one that I have myself and it is only a "users instruction book" covering only basic tasks and not dismantling.

If I have attached a file correctly, it shows a brochure of the two CAV type DPA pumps and mine is the lower one. NB, this brochure is not the "instruction book". That can be found at http://www.bluemoment.com/manuals/Lucas CAV DPA injection pump instruction book.pdf
Again, mine is the lower one in the picture.

Any advice on how to get bits and fix this will be welcome.
 
Hi I fixed mine OK (on Perkins 4108) its basically the ageing o ring seals on the shaft - got the requisite spares from Lawson Diesel Inj Ltd Edinburgh. There is a very helpful, pleasant guy in there that gives you an explanation of how to repair. It can be done in situ on the 4108 (at least my version). Helps if you've had any gynaecology training. Make sure you have the right sized spanners to take the top assembly off.
 
Thanks JonJon, I was hoping to hear from someone who had tackled the job. From stories on other forums (ranging from boating to agriculture) I gathered that he top section should be removed and that the shaft "presses out" but I hope to hear warnings of any wee springs or other bits that are going to jump our and disappear into the bilge. So if anybody else has personal experience, please help.

Glad to have the name of a possible supplier of bits however. Even if it is in Edinburgh. I usually only get over that side these days if there is a game at Murrayfield and after the last one I am not sure Mrs W D will approve of us returning.
 
Wight Dawn said:
Thanks JonJon, I was hoping to hear from someone who had tackled the job. From stories on other forums (ranging from boating to agriculture) I gathered that he top section should be removed and that the shaft "presses out" but I hope to hear warnings of any wee springs or other bits that are going to jump our and disappear into the bilge. So if anybody else has personal experience, please help.

Glad to have the name of a possible supplier of bits however. Even if it is in Edinburgh. I usually only get over that side these days if there is a game at Murrayfield and after the last one I am not sure Mrs W D will approve of us returning.
Click to expand...


These are closer

http://www.mcalisterfuelinjection.co.uk/our_services.html


Google will help if you look up "diesel injection servicing Glasgow"
 
Did seals on a 59 land rover, basically its a doddle, just dont drop anything and note which holes the little return spring is located in before removing the cover completely, it will still work but messes up the general running.
Got my parts from the usa via e bay.
Be aware if the pump is mounted upright like the land rover it holds a lot of diesel!

Lynall
 
Here is another two places to try

Wight Dawn said:
I have a leak from the throttle shaft of my CAV type DPA Hydraulic governer injection pump. From a trawl on the web it seems that this is quite a common complaint and there are lots of people out there looking for parts lists, suppliers and manuals. The only "manual" I have found is one that I have myself and it is only a "users instruction book" covering only basic tasks and not dismantling.

If I have attached a file correctly, it shows a brochure of the two CAV type DPA pumps and mine is the lower one. NB, this brochure is not the "instruction book". That can be found at http://www.bluemoment.com/manuals/Lucas CAV DPA injection pump instruction book.pdf
Again, mine is the lower one in the picture.

Any advice on how to get bits and fix this will be welcome.
Click to expand...

I have used the following guys over the years,

Argyle Diesel and Electric in East Kilbride

M & B in Glasgow
 
Thanks all for the useful information. I thought about McAlister last year when one of the injector pipes developed a pinhole but got that repaired at a place in southside of Glasgow just north of the new M74 somewhere Shawfield. They repaired the leak by cutting off the nipple and swaging on a new one. The pipe still fits to he engine. Can't remember their name or find their address naturally.

One of the local farmers has told me the bit is "easy to remove." Well maybe if the engine were in a tractor with easy access to all parts! He has also suggested an agricultural engineer in Renfrewshire, but he recommended them last year and when I called they did not look at the pipe but said that they did not make up injector pipes.
 
M & B

Wight Dawn said:
Thanks all for the useful information. I thought about McAlister last year when one of the injector pipes developed a pinhole but got that repaired at a place in southside of Glasgow just north of the new M74 somewhere Shawfield. They repaired the leak by cutting off the nipple and swaging on a new one. The pipe still fits to he engine. Can't remember their name or find their address naturally.

One of the local farmers has told me the bit is "easy to remove." Well maybe if the engine were in a tractor with easy access to all parts! He has also suggested an agricultural engineer in Renfrewshire, but he recommended them last year and when I called they did not look at the pipe but said that they did not make up injector pipes.
Click to expand...

The one at Shawfield was M and B Diesel

M & B Diesel (Glasgow) Ltd.
31 Queensferry Street
Glasgow
Lanarkshire
G5 0XR

Tel: 0141 4292000
Fax: 0141 4293130

PS was admiring your boat today as I used to have the Bilge Keel version but mine had a Green Death engine which I hated with a vengence. I presume yours is a Seapanther.
 
"PS was admiring your boat today as I used to have the Bilge Keel version but mine had a Green Death engine which I hated with a vengence. I presume yours is a Seapanther."

Yes, it is the Seapanther engine, complete with 24 volt starter system.
 
Johnstone & Drynan, Kilmarnock

1 Fullarton Street,
Kilmarnock,
KA1 2QZ.
01563 523008

I can recommend these guys, as I have been a happy customer on three occasions for rebuilds of my alternator, starter and injector pump, + they will manufacture hydraulic pipes / lines if required.
 
"Thanks JonJon, I was hoping to hear from someone who had tackled the job. From stories on other forums (ranging from boating to agriculture) I gathered that he top section should be removed and that the shaft "presses out" but I hope to hear warnings of any wee springs or other bits that are going to jump our and disappear into the bilge. So if anybody else has personal experience, please help.

Glad to have the name of a possible supplier of bits however. Even if it is in Edinburgh. I usually only get over that side these days if there is a game at Murrayfield and after the last one I am not sure Mrs W D will approve of us returning. "
__________________

Its a pretty straightforward job made only difficult by the fact that, on the Perkins at any rate , the top cover is rammed right up underneath the exhaust manifold. Just take it steady and you will have no probs. providing on yours you have some access to work. I would imagine its an absolute doddle on a tractor.
You will need the serial/model no of the pump to get the right spares.
 
Thanks for that address OGIDT. I have made a note of it.

And thanks for the re-assurance JonJon. My pump is also right under the manifold, in fact I think that the first thing to do will be to remove the manifold to get some room. It is at times like this that I wonder if the manufacturers, building the engine on a bench, give any thought to the problems of maintenance and repair once it is mounted in a boat. Last year, refitting the injector pipe, I found it near impossible to get a spanner on to tighten up the union nut. I was glad it was not the pipe for one of the other cylinders. That one is completely inaccessible
 
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