IO-360-A1A engine driven fuel pump options

[N201MKTurbo]

13 hours ago, cliffy said:

Back in the OLD days one could order a pump kit and rebuild them on the bench.

Nothing near rocket science to do it but torque the screws correctly and check for wear.

All the over haulers have the parts but no one can release them to the public now. 

The parts are probably still available if you can find the part numbers.

It probably isn't an availability issue, it is probably a demand issue. most mechanics don't want to fix anything anymore.

[cliffy]

1 hour ago, N201MKTurbo said:

most mechanics don't want to fix anything anymore.

I've said this for years now!   Like make up hoses, do cylinder work (valve seats and guides), even magneto repair.         Most everyone wants to just order parts.

[Vance Harral]

Just to update this story, we ordered and received the LW-15473 pump, and our mechanic installed it today.  Ground ops are normal, fuel pressure gauge shows 25 psi with just the engine driven pump, increases to about 27 with the boost pump on, all looks good.  Test flight will have to wait for better weather, but I don't anticipate any problems.

At the (small) risk of affecting my core trade-in, I disassembled the old pump to look at the diaphragms.  Comments from @cliffy and @N201MKTurbo seem spot on - it would not be difficult to self-overhaul the pump if we could get a kit to do so, but the combination of market and paperwork makes that a hassle.  Anyway, while I was not able to actually find a breach in the main diaphragm, it was clearly on its last legs - the outer edges of the diaphragm were brittle, with a consistency more like cardboard than rubber.  Lousy piece of junk only lasted 31 years, guess they just don't make things like they used to. 

[N201MKTurbo]

Yes, the pivots, arms and spring would probably make it through 10 diaphagram replacements.