Question: Front landing gear touches

[Oscar Avalle]

Since about two flights I have been hearing a strange noise when I retract the landing gear (electric). I looked at the front wheel and it seems that it touches the landing gear compartment while it retracts. Any suggestions of what may be going on... How can I adjust the front wheel?

 

  

[isaacpr7]

Check the mooney.com site.  I saw either a sevice bulletin or service instruction that deals with this a few days ago.  Has your nose gear been modified so it has no play upon landing? The additional spacer that is put in play to fix this problem can cause what you are experiencing but the other SB or SI covers how to fix this.

 

Another thing that might help in the mean time is pressing the brakes while airborne, prior to retracting the gear. This will stop the rolling motion of the tires before they are stored, thus eliminating any rubbing noise.

[Bob_Belville]

Check the mooney.com site.  I saw either a sevice bulletin or service instruction that deals with this a few days ago.  Has your nose gear been modified so it has no play upon landing? The additional spacer that is put in play to fix this problem can cause what you are experiencing but the other SB or SI covers how to fix this.

 

Another thing that might help in the mean time is pressing the brakes while airborne, prior to retracting the gear. This will stop the rolling motion of the tires before they are stored, thus eliminating any rubbing noise.

brakes won't help on nose wheel...

[scottfromiowa]

At 35psi my nose gear looks low on air...It is not. Overinflation or installation of a nose-gear-well liner and overinflation could be the problem. Get that resolved. You don't want a gear failure (GU)-landing) and go "I should have"...

[isaacpr7]

brakes won't help on nose wheel...

 

Good catch Bob  

 

Here is the first SB that would cause the gear to touch the skin: http://www.mooney.com/images/pdfs/sb-pdf/sbm20-202.pdf

 

I will try to find the other SB or SI that talks about the gear rubbing due to the above modification when I get a chance.

[Super Dave]

Adding to the thread creep: I just listened to the Mike Busch webinar on tires, and he recommends over inflating by 10% of the POH numbers. He says that the POH numbers are assuming an unweighted tire, and a little over inflation is harmless, while under inflation is the worst thing you can do for tire life/reliability.

[Oscar Avalle]

Guys, thank you!! It seems that some bushing had to be tighten. So my AP did that and he retracted the gear and everything looked OK. So lets see when I go flying on Sunday

[Hank]

You folks with injected engines are too heavy. Tire pressure for a C-model is 30 psi per tire. Makes it easy to remember.

Glad to hear you got it fixed!

[Shadrach]

There are 2 eccentrics in the gear assembly that determine the position of the nose gear when retracted.  Find a good MX that is familiar with the Mooney gear and have everything checked for proper specs.

[Bob_Belville]

You folks with injected engines are too heavy. Tire pressure for a C-model is 30 psi per tire. Makes it easy to remember.

Glad to hear you got it fixed!

My E is 30 all around.

[Marauder]

You folks with injected engines are too heavy. Tire pressure for a C-model is 30 psi per tire. Makes it easy to remember. Glad to hear you got it fixed! My E is 30 all around.

My '75 F calls for 49 psi nose, 30 psi mains

[fantom]

My '75 F calls for 49 psi nose, 30 psi mains

As does my '94 J. The 231 next door to me is way different, and he's always telling me my mains look low. A genius, he ain't

[Oscar Avalle]

Guys, thank you!! It seems that some bushing had to be tighten. So my AP did that and he retracted the gear and everything looked OK. So lets see when I go flying on Sunday

Indeed that was the issue. Everything looks great now. Btw I put 30 psi on the mains and 33 on the front.

[scottfromiowa]

I bet mine is 30 not 35 as I stated...Mains and nose are same as Bob stated. I have a sticker on a main gear door, so I never commit to memory...My nose gear DOES look low when properly inflated. Glad you got issue resolved.

[chrisk]

As does my '94 J. The 231 next door to me is way different, and he's always telling me my mains look low. A genius, he ain't

 

I believe the mains on the 231 are 42 psi, and 49 for the nose.

[SkyPilot]

That's interesting.  On my J model the nose gear tire pressure specification is 49 ft. lbs.  I think that the mains are either 30 or 35 ft. lbs., though.  I wonder why the change between the E and the J?  My counterweighted engine might be a bit heavier.  Maybe that's it?

 

Jim

My F the nosewheel pressure is also 49 psi.

[Shadrach]

Just to add to the info stream... 67 F - nose gear is 49PSI, mains 30PSI.