help changing the fuel filter on volvo D9

[hori]

Just did oil /filter change and was gonna change the fuel filter but was looking for the priming pump and what was listed as the hand pump in the manual was just a long hexagonal cap that had a small brass plug at the end?

would greatly appreciate some help on this hand pump so I change my fuel filter..thanks

 

[kashurst]

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7746900-23-7390.aspx

the hand pump is the round thing on number 24. I think you need to open the bleed nipple before it will move (not 100% sure)
have a look at the condition of the fuel pipe number 46 - they can split, worth changing if its a few years old

 

[mcanderson]

Also, you may want to check the 'how to bleed you engine' section in your user manual. I recently changed my fuel filters on my D6 engines and after you fill the fuel filter you then need to close the bleed nipple and continue to pump the hand pump until hard (approx 10 pumps).

 

[hori]

I posted this but took 12hrs for it to go online. The fuel priming pump is missing and just has a plug in it`s place.

 

[hori]

wondering if I could use my electric oil change pump and put a hose over the vent nipple and open it and draw the fuel up with the suction of the pump and fuel coming through...??? any thoughts

 

[mcanderson]

Maybe, but I needed to pressurise the fuel line down to the injectors on my D6. Hence my comment on check your manual.

 

[kashurst]

If you can't get a new hand pump, I think it would work OK as an emergency measure, but honestly please don't do this its just not worth the risk. Next stop after the bleed nipple are the fuel injectors at £900 each! plus god knows what else if an injector should stick open. A new hand pump is @ £150
Probably better to get a new pump really, you will need it next year etc.

Re D6 - D9, when I changed the fuel filters on my D9s I just used to hand pump until no more air came out of the bleed nipple then nipped it up. The I believe the fuel injection system on a D9 is quite different to the one on the D6. The D9 is a pseudo electro-mechanical system with mechanically driven injectors.
well worth draining the old filter down first too, it has a lot of diesel in it, and its as slippery as an eel once its off the engine.

 

[kashurst]

another idea, subject to access, safety, trapped limbs etc - you could put a clear plastic tube from the nipple into a suitable container, open the nipple 1/2 turn. No danger of getting carp in fuel injection system this way.
then an assistant cranks the engine until clear diesel comes out of the nipple (very fast - hence the tube and container)
then nip up the bleed nipple. If the assistant is still cranking it will start! so be careful.

I guess this must be how previous owner did it without a hand pump. There must be enough diesel in the tank so the engine lift pump will be self primed. Still better to buy a hand pump though.