These 540,s have a sealed power oil pump.
The pans are 10 quart Gil offshore style.
The pickups are welded to the pump the depth distance
is 8 1/4 inces below the pan rail.

I ordered the Morroso Hv #22160 oil pumps to replace the old sealed power.
I ordered Hardin Marine Pickups that are very similar to the old
gil style pickup.
Will I have to weld the new pickups???
The casing of the pumps appears to be cast iron.
after closer inspection and filing the weld bead on the old pump
pickup assembly it looks like Brass "brazed"
What is the recomended procedure for attaching the new pickup???

Please respond
Thanks
Gerry

Yes, the pickup should be welded. This is just a preventative measure. You can easily weld cast iron with a special rod. The rod will join the iron to the the steel with enough strength for the application. Depending on the iron content it could be tig or mig welded too.

We use a silicon bronze brazing rod and tig. Welding or brazing is an absolute must.

Make sure you remove the spring prior to welding, the heat will cause it to lose it's tension = low oil pressure.

GERRY , HOW'S IT GOING??? LOST YOU'RE # PM IT IF YOU GET A CHANCE. HOW'S THE BOAT COMING?? ...... RICKY

Thanks for the response everyone!!!
So I take it the weld must be airtight...

Marc just ordered 1\8 silicon bronze tig rods.
hope it flows good. 1\8 was the smallest he had.

Cord I have the cast rods for my Arc. Dont think I
would wanna go near it with the Buzz box.

Monty I will punch the pin out and remove the spring.
the tig will most likely concentrate the heat. but Good
insurance.

Tunnelvision Check your pm...

Thanks again everyone...

The weld is to keep it from falling off, not to make it 'airtight'. The seal is obtained from the assembly itself.

So it only needs to be tacked on.

I have received the new oil pumps. I have not received
the pickups. Inspection of the old pumps with welded
pickups indicates a airtight seal. "Nice bead 360degrees
around the tube". If one were to just weld "tack"for
strength what seals the pickup tube as it enters the pump???


Thanks in advance.
Gerry

The pickup tube has an interference fit and that is how it is sealed. The tack is added measure so it don't fall off.

I have seen them fall off. I wouldn't ever put a motor together without tacking it.

My welding sucks, so i have friends do it for me.

The oil pickup tube is slightly tapered and it has to be driven into the pump housing.I apply a 1/4" long "tack"
Tig Weld with evedur, (a rod similar to Silicon Bronze) on the bottom, away from the surface that the gears ride on.I would be concerned that a full 360 degree weld may distort the surface.I have only seen them tacked .


Just My 2 Cents

Rob