Injectors

[38mess]

I've just removed the injectors from my Perkins gennie, they came out ok, but the copper sealing washers are stuck way down in the hole on the head. I have tried to get them out using various pointy things, but have been unsuccessful.
Any ideas please?
There is a special tool I can buy for £20 if all else fails.

 

[alancollins]

How about superglue on a suitable rod?

 

[RobinBirch]

I used a softwood pencil on my BMC Captain when I changed the injectors. Push in gently and the inner ring of the sealing washer catches on the tapered end. Good luck.

 

[Bobc]

A piece of threaded rod or a long bolt usually works. One that is big enough diameter to want to tap the washer. Wind it into the washer a turn with some downward pressure, then pull.

 

[mjcoon]

If the previous suggestions (especially the bolt or a tap) didn't work, I'd try circlip pliers - the variety meant for expanding external circlips.

 

[38mess]

Just a thought, the washers are copper, they look in good condition, could I anneal them in situ?

 

[scottie]

If the previous suggestions (especially the bolt or a tap) didn't work, I'd try circlip pliers - the variety meant for expanding external circlips.

Corkscrew?

 

[Poignard]

Might any of these do? The points of the calipers could be re-shaped

 

[Poignard]

Just a thought, the washers are copper, they look in good condition, could I anneal them in situ?

Not really practical because to anneal the copper you need to get it to red heat.

Even if you could, I wouldn't re-use an annealed copper joint washer in that situation because although annealing softens it doesn't restore its original thickness.

 

[mjcoon]

Corkscrew?

Possibly. I've never done a diesel course or seen an injector, so have no idea what diameter thread they typically have (and 38mess didn't tell us!)... Any tool in a Boy Scout's pocket must be a good suggestion...

 

[mjcoon]

Might any of these do? The points of the calipers could be re-shaped


View attachment 108953

Ooh, dentistry kit? Crochet or carpet hook?

 

[Poignard]

Ooh, dentistry kit? Crochet or carpet hook?

Useful for getting the meat out of crabs and lobsters

 

[38mess]

All done, I poked around with a small flat head screwdriver and out they popped.
Thanks for all the helpful suggestions.
I am amazed how thin they are. I would say they are 15mm

 

[mjcoon]

All done, I poked around with a small flat head screwdriver and out they popped.
Thanks for all the helpful suggestions.
I am amazed how thin they are. I would say they are 15mm

They don't look good for re-use!

 

[38mess]

They don't look good for re-use!

They are already in the bin

 

[TernVI]

They are already in the bin

Never do that until you have the new ones in your hand and are sure that the new ones match the old ones!

 

[38mess]

Never do that until you have the new ones in your hand and are sure that the new ones match the old ones!

Good thinking, although I have the new ones in stock.

 

[scottie]

They don't look good for re-use!

Previously you said
Possibly. I've never done a diesel course or seen an injector, so have no idea what diameter thread they typically have (and 38mess didn't tell us!)... Any tool in a Boy Scout's pocket must be a good suggestion..
Excellent teaching on this forum?

 

[mjcoon]

Previously you said
Possibly. I've never done a diesel course or seen an injector, so have no idea what diameter thread they typically have (and 38mess didn't tell us!)... Any tool in a Boy Scout's pocket must be a good suggestion..
Excellent teaching on this forum?

Oh, I've learnt lots! Not sure enough to compensate for failing recollection of having been on a boat, though...