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Grease Fitting size


FlyboyKC

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I lost a grease fitting on my 68 M20g. I am trying to figure out what size/part number to order. Its from the landing gear and its a small grease fitting, smaller than 1/4" it seems. I tried a 6mm which seem to fit, but the treads seemed different because it didn't want to tighten. The IPC calls for a part number of MS15002-1 Spruce shows this as a 1/4-28 tapered. The IPC also shows a 3c18 51004-007 (which I can't seem to find.) and the diagram in the IPC is awful.

Anyone got any ideas?

Thanks
Neal

 

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Expect that they are not threaded.  They are detailed in a thread around here somewhere.  They have a tendency to fall out every now and then.

Expect that they are pressed into their location.

PP knowledge only, when I could use some mechanic skill if I had it....  :)

Best regards,

-a-

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7 hours ago, FlyboyKC said:

I lost a grease fitting on my 68 M20g. I am trying to figure out what size/part number to order. Its from the landing gear and its a small grease fitting, smaller than 1/4" it seems. I tried a 6mm which seem to fit, but the treads seemed different because it didn't want to tighten. The IPC calls for a part number of MS15002-1 Spruce shows this as a 1/4-28 tapered. The IPC also shows a 3c18 51004-007 (which I can't seem to find.) and the diagram in the IPC is awful.

Anyone got any ideas?

Thanks
Neal

 

Neal,

Can you post a picture of where its supposed to go?  There are several different ones in use.

Clarence

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Often they appear to be screw in...

Very often they are press in...

The parts manual probably shows exactly what they are...

The press in ones have a tendency to come out every now and then.  

What they got replaced with over the decades is probably hard to actually know.

PP thoughts only, Not a mechanic.

Best regards,

-a-

Edited by carusoam
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The grease fitting in the aft gear trunnions bearing is normally a screw in type. As noted above the forward one is a press in style. All others are screw in style.

Clarence

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