Brass Screw Heads on Raw Water Pump

[penberth3]

Once you've got them out, replace them all with allen-head machine screws

I wouldn't. Socket head screws are usually extra high tensile. That's even more grief if they seize in future.

 

[Poignard]

I wouldn't. Socket head screws are usually extra high tensile. That's even more grief if they seize in future.

He could use stainless steel ones.

 

[BobnLesley]

He could use stainless steel ones.

I did

 

[Poignard]

I think these would be a good solution:



No tools needed.

 

[ghostlymoron2]

Normally they are dome head brass, So nothing will grip the head ,Once the slot in the head breaks they are gone. One may as well file the head off & remove the plate, Then grip the stub with some mole grips firmly in ONE GO & unscrew. If it shears off. file flush & drill with a 2mm drill bit a centrally as possible having first spotted the centre. Then drill 4 mm(4.2 tapping size , but this is an existing hole) & tap 5mm to clean the hole & remove the residue of the old bolt.
Use the original plate as a hole drilling guide if not good at drilling. Start off with a 5 mm drill bit to form a very shallow sinking. This is just to guide the next operation, That should help you find the centre of the hole for the 2 mm & 4 mm hole The old screw may break free, especially if the hole is not accurately drilled, so take care not to jam the screw in the hole.
If the original plate is to be re used use 5mm socket head ss screws. It is much easier to remove/replace in a seaway using a "T" shaped allen key than a screw driver. Obviously the speedseal cover with knurled thumb screws should be the best option -if it fits

Instead of mole grips I find 6" Stilson wrench much better as they tighten the more effort you apply whereas Mole type tend to loosen the more pressure you apply.

 

[Daydream believer]

Instead of mole grips I find 6" Stilson wrench much better as they tighten the more effort you apply whereas Mole type tend to loosen the more pressure you apply.

Depends how you use the tools. I have multiple selections of both. Moles would not loosen applied in a way to suit this application.
Spanner monkeys will struggle with anything

 

[Goldie]

I think these would be a good solution:

View attachment 186682

No tools needed.

Very close to what I’m using, mine supplied as part of the Speedseal kit.

 

[Beneteau381]

Very close to what I’m using, mine supplied as part of the Speedseal kit.

Speedseal looks like they are back.

 

[Goldie]

Speedseal looks like they are back.

Excellent news and probably worth flagging up in its own thread?

 

[Beneteau381]

Excellent news and probably worth flagging up in its own thread

 

[ghostlymoron2]

I tried to buy a speedseal for my VP MD1 but they never made one in that size. A clock mender friend made me one in about an hour.