Yanmar Fuel Filter Bleed Screw

[dave_gibsea]

Hi,

I am having problems with sealing the bleed screw on my 1GM10's fuel filter (the one on the engine). I have replaced the copper washer and have been careful not to over-tighten but alas there is still a sligh weep of fuel. If fuel is getting out, air can get in which is also probably adding to my cold-start problems. I'm thinking of trying a fiber washer next - running out of ideas! ....any other suggestions??

Thanks, Dave

 

[Spyro]

Hi,

I am having problems with sealing the bleed screw on my 1GM10's fuel filter (the one on the engine). I have replaced the copper washer and have been careful not to over-tighten but alas there is still a sligh weep of fuel. If fuel is getting out, air can get in which is also probably adding to my cold-start problems. I'm thinking of trying a fiber washer next - running out of ideas! ....any other suggestions??


Thanks, Dave

I seem to remember that washer being some type of plastic but yes I would try fibre.

 

[Mel]

I have had similar problems and have wrapped the washer with PTFE tape to help the seal. It works !

 

[ChiPete]

The filter on my 3YM20 doesn't have a washer, the pan head screw is simply flush to the casing. Suggest trying that approach.

 

[nemodreams]

On the filter housing top there are two bleed plugs - one hex head with crush washer and one cross head normal bleed screw.

The cross head bleed screw has a nylon washer ( yanmar part )

The cross head bleed screw on the top of the injector pump has a dowty washer ( yanmar part )

These were as supplied as Yanmar parts when I renewed the two bleed screws.

Both the cross head bleed screws are the same - but have different washers ?

I would have thought a dowty would do fine on all.

I am not sure why the hex bleed plug on the filter housing is there - I've never bled it. I only bleed the cross head screw.

A new filter assembly from Yanmar is actually very cheap ! - £53 inc vat ( see page 5 link )
and that may include a new filter and O ring !


http://www.frenchmarine.com/1GM10-23?CID=23&LinkTitle=1GM10

 

[dave_gibsea]

Thanks guys, useful informatiom especially when you haven't owned the engine from new, its hard to know if a previous owner used the wrong bit!

 

[savageseadog]

Watch you don't strip the thread. Fibre washer would be fine

 

[biscuit]

From the archive: One of the many threads on this subject, (including my contribution):

http://www.ybw.com/forums/archive/index.php/t-193644.html

The threads of the soft alloy body of the filter are easily stripped by the ss bolts, which is not at all visible, the leak can be the only indication...