The International Cessna 170 Association

Thanks Bruce. I have a line on NOS shaft parts 0511227-7 but I am still unclear if there are LH and RH parts or the shafts are inserted into another part in the assembly and if so, how difficult it would be to swap out.

Thanks,

Bob

Both the 1956-1962 and the 1963-1974 C-172 IPCs shows that the right door handle shaft is p/n 0511227-6 and the left door handle shaft is p/n 0511227-7 for C-172s from 1956-1965. They are not interchangeable.

Thanks Gary

… Looking online, these shafts are rather expensive. Looking closely at the part, it is actually an assembly of several parts silver soldered together. I think one could heat the part and pull out the spline shaft and replace it with a new 16-spline 7/16” shaft which has been machined to match the original. So far I have been unable to find such a stub shaft online.IMG_1126.jpeg

I found a match for the spline shaft at Grob Inc. Their 406-16-2 is the same size as the shaft spline on the C-170 door handles. The minimum order was 35” so if anyone is interested in turning shafts to match ones on their plane PM or email me for a couple of inches of this stock. More often it’s the handle splines that have worn as the pot metal is softer than the steel shaft it mates to. Grob sells broached sleeve bushings to match their splines. Their p/n BS-0406-16-2 mates with the shaft linked above. It costs around $10.

To repair your existing handles using inserts such as these here are some ideas:
McFarlane attaches their handle to the spline with set screws. Cessna used an insert, p/n 0517041-1, on later model handles. I can’t find that part online but insert p/n 0517041-3 is used on the rear door of the C-206. It’s available from AirPower for $42. Cessna issued SEB96-12 to add a roll pin to this insert/handle. Finally, take a look at the last picture on this website. So the question for you A&P/IA’s out there would be is modifying/repairing a door handle by adding an insert a minor alteration, minor repair, major alteration or major repair? I know what Blueldr would have said.

so the question for you A&P/IA’s out there would be is modifying/repairing a door handle by adding an insert a minor alteration, minor repair, major alteration or major repair? I know what Blueldr would have said.
Gary

?????????????So it probably went some thing like " whatsamater with you asking a question like that"?

I want to remove the door panel to investigate further. Is this held on to the door with pop in spring clips? I can’t see any other method of attachment.

Thanks!

The upholstery panel is held with spring-clips to the door frame. YOu’ll have to remove that interior door handle first of course.

B-model IPC, pgs 60/61, Fig 33, item 5. 13 of ‘em. (Think of crossed-fingers…made of wire)

Thanks George that’s what I thought, and I could have looked at the IPC first!

Bob

Well…the IPC isn’t sufficiently detailed…except it tells us how many are involved. The clips are similar to what holds the false-panel to the floating instrument panel….without the “buttons” on the end.