Landing gear pin.

[Grey Ghost]

Has anyone else experienced a problem with shearing off the landing gear pins inside the front storage ben. The square rod between the right and left landing gear has two pins one on the right and one on the left. I've been continually shearing the right pin off when I try to run the running gear up. (Right pin as you are facing the unit.) I've tried about every type of pin I can find and it just shears them off one after another. Any help would be appreciated. Thanks in advance!

 

[jnbhobe]

Look for a bind or lubrication on the left leg, it should turn by hand with the shaft off it.

 

[caissiel]

Try to lift you unit manualy. If hard you leg pinion is climbing on the leg screw gear. An eazy fix is to center the centering plate on the top of the square tube.
I have pics of the repair in my pic library.

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[mobilcastle]

Keep jack screw lubricated. I drilled holes in the outside square leg tubing and I oil mine-some people take them apart and grease theirs.

 

[Grey Ghost]

I wasn't referring to the outside landing gear legs themselves, I was talking about the inside turning rod that lifts the landing gear legs. There are two pins in the rod, one on the motor side and one on the other side of the bar that reaches across the in side storage compartment. I keep shearing of one of those pins.

 

[jnbhobe]

that's what causes it to break your left leg is bound up

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[wdk450]

I would echo what all the others have said about leg leadscrew lubrication. If you take the leg off to disassemble it, be sure to check that the thrust bearing is O.K. One of mine was bound up solid, but the leg worked (with difficulty) for a couple of years before I found out what was going on. The landing gear manufacturers have repair kits with the top bevel gears, top shaft, and rollpins. They usually DON'T have the thrust bearing in these kits. I worked out a part number by doing measurements of the old bearing, and an internet search on thrust bearings.

I did upgrade to Stainless Steel machine screws on the connecting bar/driveshaft and didn't break one again - But I keep spares taped to the wall with duct tape in the front compartment.

 

[JohnDar]

I seem to recall those pins were actually small bolts. I replaced my landing gear with the Ground Control system and no longer have that rod running across the front compartment.

 

[Grey Ghost]

Thanks Bill, very helpful info.

 

[Grey Ghost]

Ok Jon I will try to fix that and see if that corrects my problem, thanks for the info!

 

[cookie]

John is correct about that being a bolt. A hardened bolt.
What happened to the original, break or fall out?

Peace
Dave

 

[Grey Ghost]

It sheared off, guess I have additional problems to deal with!!

 

[JohnDar]

Insert another bolt of the right diameter in the holes and see if that jack operates as it should. In order to shear the original bolt, it had to have jammed to provide the resistance to the operating shaft from the motor. And you probably would have heard the motor laboring. Are the holes in the shaft elongated?

 

[Grey Ghost]

No, the holes are not elongated, they are fine. It took a 1/4" bolt. It now goes up and down, but the right side seems to be higher than the left side.

 

[JohnDar]

You could try disconnecting the right side jack and run up the left. Then manually lift the right side to the same height and then reconnect it.

 

[mobilcastle]

No, the holes are not elongated, they are fine. It took a 1/4" bolt. It now goes up and down, but the right side seems to be higher than the left side.

Do you think that was the problem and sheared the bolt? To much pressure on one leg. Glad it is working now.