vacuum pump quit during breakin-flight

[DrBill]

Did a 2.6 hr breakin flight a week ago and 30 mins in the vacuum pump went.  So today the A&P and I take it out.

Yep drive broke.. he opened up the vanes and they are AOK.

Will order a new one tonite.

Any tips on getting the lower left nut on ? Was a bear to get off.

Bill

 

[N201MKTurbo]

There is Teflon tape on the fittings. That is a big no no.

[N201MKTurbo]

If I recall, if you remove the oil screen you get better access to that nut.

[slowflyin]

Spruce sells a nice purpose built wrench. Well worth it.

Sent from my SM-G900V using Tapatalk

[cliffy]

Get the correct wrench as mentioned  No problem after that.

Don't use teflon tape as mentioned  Dry installation

[DrBill]

Awesome,, will order wrench with pump !! Similar to my old distributor wrench !!.. Priceless.

Right on the teflon tape.. that was there when i got the plane.

Bill

[Mooneymite]

2 minutes ago, DrBill said:

Awesome,, will order wrench with pump !!

What!??  That's just not as much fun as using a long screwdriver to tap each face of the lower nut.

You'd never catch me missing out on that fun!

I thought that when the drive shaft shears, it is usually due to vane wear causing rotational resistance even though the vanes may look okay.

Edited February 23, 2016 by Mooneymite

[DrBill]

Just now, Mooneymite said:

What!??  That's just not as much fun as using a long screwdriver to tap each face of the lower nut.

You'd never catch me missing out on that fun!

Thats how we got it off !!

Bill

 

[1964-M20E]

patience young Jedi

be mindful your feelings of anger

anger leads to hate and hate to the dark-side and then you might want to go buy a Cessna.

 

 

[eman1200]

DrBill did they get a new mechanic yet down at the grove?

[DrBill]

NO,  it will be a while the ad is on Barnstormers or Controller, search for Wilgrove.  I'll continue to use Mark for a while,  his attention to detail is really good.

Bill

 

[merrja]

Bill, How did the engine break in go?

[DrBill]

13 hours ago, merrja said:

Bill, How did the engine break in go?

Awesome, I figure one quart burned in 2.6 hrs so well below acceptable for that flight.. Will keep using mineral oil for 4-5 more hours.

75% 155 kts avg groundspeed at 4750 ft.  No lean so fuel burn was over 12 gph!!

Bill

[DrBill]

REPLACED PUMP yesterday and was a snap using new WRENCH !!  Thanks for the tip..\

flew and all was well.  All EGT And CHT sensors now

working were bundled with ignition wires, I separated and all is good.

Had a good time.

Bill

 

[carusoam]

TC wires carry mV signals, and are sensitive to RF noise.

Ignition wires carry 1000s of volts, and enjoy spewing RF noise.

This kind of problem usually effects the guys without an electrical engineering background.

How did that happen, Bill?

Best regards,

-a-

[DrBill]

Mechanic did the work and I was too busy to check... BTW.. TC signals are in MICROVOLTS !!

Thats how I caught it.. I read the GEM install guide..

For once I read the instructions !!!

Bill