Pump locating pin broken

[Rick Iverson]

Gents;

I finally dissembled my Titan 5-port dry sump pump, only to find the locating pin that aligns the pressure body section to the scavenge body section was broken below the base, say 1/64”.

Any recommendations on who can drill and extract it for me?

V/r

Iverson

[Steve Demeter]

Not who but a possible method, if the diameter is big enough. VERY BIG IF

set it up in a bridgeport level and square.

drill the pin

Tap the hole you just drilled.

Insert bolt ad pull out.

[Rick Iverson]

Steve, how necessary are they?

[cleaver racecar engineering]

not too hard get your mig us it to build up the pin and then pull out.

[steve zemke]

Did you try drilling it and using an easy out?

[Daryl DeArman]

Before you go through the hassle of trying to drill or weld up some material to grab ahold of, try a really strong magnet. The force required to remove the magnet may be enough to take the little broken piece of the pin with it. Recently worked for me on my air compressor.

[Jerry Kehoe]

You indicated the pin is broken below the surface so is there a bit of the pin in the other piece that sticks out? if so since the pin only locates the two you may be able to bolt the two together and while bolting rotate the shaft to make sure it doesn't bind anywhere and recheck after the bolts are tight. After all the Weaver type oil pumps have no pins and assembly involves carefully rotating the pump as you tighten the bolts to make sure it turns freely.

[Rick Iverson]

Pin OD is 0.120”

Not who but a possible method, if the diameter is big enough. VERY BIG IF

set it up in a bridgeport level and square.

drill the pin

Tap the hole you just drilled.

Insert bolt ad pull out.

[Rick Iverson]

I slopped some Kroil and let it soak. Applied a magnet and NO-GO

Before you go through the hassle of trying to drill or weld up some material to grab ahold of, try a really strong magnet. The force required to remove the magnet may be enough to take the little broken piece of the pin with it. Recently worked for me on my air compressor.

[Rick Iverson]

Slightly below the body

You indicated the pin is broken below the surface so is there a bit of the pin in the other piece that sticks out? if so since the pin only locates the two you may be able to bolt the two together and while bolting rotate the shaft to make sure it doesn't bind anywhere and recheck after the bolts are tight. After all the Weaver type oil pumps have no pins and assembly involves carefully rotating the pump as you tighten the bolts to make sure it turns freely.

[Rick Iverson]

Gents;

I have been thinking about this. I contacted an HO scale hobby shop that sells micro bits and taps (as small as 1mm). Thinking, as suggested, drilling, tapping and screwing in a stud.

Also, drilling to near the bottom, inserting a wile coated with epoxy. In both cases here, submerge the body in 180F water and give a tug. Thoughts?

V/r

Iverson

[Daryl DeArman]

I slopped some Kroil and let it soak. Applied a magnet and NO-GO

Bummer.

[Steve Demeter]

Would try tapping the hole first. If you strip the threads can use the epoxy wire as a back up.

Heating is a great idea since aluminum expands faster than steel, so that should loosen the grip somewhat.

Is the back side of the hole the pin is in accessible. If it is not a critical surface and all else fails could try drilling from the back side so you can knock the pin out with a small punch.

[Rick Iverson]

Would try tapping the hole first. If you strip the threads can use the epoxy wire as a back up.

Smart

Heating is a great idea since aluminum expands faster than steel, so that should loosen the grip somewhat.

Yep

Is the back side of the hole the pin is in accessible. If it is not a critical surface and all else fails could try drilling from the back side so you can knock the pin out with a small punch.

It can easily be drilled from the backside, as long as it is smaller than the locating pin. Biggest problem is duplicating the precise location from the blind side.

[Lotus7]

Any chance the broken bit of the pin isnt bottomed in the hole and can be driven in deeper?
That would allow the use of another pin.

[Rick Iverson]

Any chance the broken bit of the pin isnt bottomed in the hole and can be driven in deeper?
That would allow the use of another pin.

I am supremely confident it is bottomed out. I spoke with John at Pegasus this morning, and he reported he has only seen two that need encouragement from a pair of pliers, meaning the are lose and free-standing

[bob darcey]

It's starting to seem as if this pump was assembled with a lot of loctite. You might try baking at ~325 F for 40 minutes or so, then using the strong magnet again. The heat will a.) expand the diameter of the hole more than the pin, and b.) should melt most loctites if present.

[Steve Davis]

I'm not familiar with this pump, so don't have any visual reference, but no one else has mentioned it so ...

Can you place a socket over the hole and TAP with a hammer .. or maybe use your wife's vibrator to shake it ... or an ultrasonic cleaner. Of course in each case supporting the pump in such a manner that GRAVITY would help it out ..
??

[Earley Motorsports]

I will chime in.
Put a socket over the hole, turn it upside down. Apply heat with a heat gun and tap the housing with a hammer.
Or try some jb weld on a rod and give it a tug after using a heat gun to expand the housing.

[J Leonard]

Go to a body repair shop and have them zap a dent pulling stud on it.

[Roger Eade]

Just drill a smaller hole back side and punch it out, easy as, dont make work for yourself, plenty of meat there and does not interfare with oil pump operation.