M5 restoration project
- Duane
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This is first that I’ve heard this. What is the rational behind needing the different fluid with the new springs?Duane wrote:On the oleo oil, If you have the original springs, p/n 4015B, then just some good quality tractor oil. However if you have the newer 4161B springs, then you must use API GL-4 or GL-5 85W-140 gear oil.
- Duane
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- UP-M5
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i have the new 4161B springs with synthetic 85W-140 gear oil and i don't notice any difference in compression or rebound. i do notice that the new springs sit up taller than the 10 year old ones they replaced. and the extended landing gear makes seeing over the cowling an entirely new challenge
M5-235
- freedom
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finally the landing gear is back on.. 21yrs since the last time!!! a milestone has been reached.
on a side note, is it correct that where the main gear and the oleo strut join, there is no bushing_ the hole seems quite large. only thing I can think of, is that the bolt has to be thighten quite a lot, for the 2 bushing inside the oleo to fit in the large hole.
imgupload
on a side note, is it correct that where the main gear and the oleo strut join, there is no bushing_ the hole seems quite large. only thing I can think of, is that the bolt has to be thighten quite a lot, for the 2 bushing inside the oleo to fit in the large hole.
imgupload
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Something wrong with that picture. The hole is too big.
There should be a swivel bushing but I see no way it can be captured.
The hole must have been opened out for some unknown reason.
At this point I would advise getting the extended gear, though that does mean extended oleo struts too though you can use your existing spring packs as long as you have the latest type.
There should be a swivel bushing but I see no way it can be captured.
The hole must have been opened out for some unknown reason.
At this point I would advise getting the extended gear, though that does mean extended oleo struts too though you can use your existing spring packs as long as you have the latest type.
- freedom
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I am not at hangar but according to memory it fits up against a shoulder and is either peined in four places or held with circlip.
I don't know outside diameter of bearing or inside of hole.
The upper bearing in top of oleo is positioned with thick spacers on each side of the bearing between the landing gear lugs. The nut is torqued on the bolt at 225 inch lbs. Be sure correct amount of washers are used to prevent torqueing against the shank, easy mistake as the lugs are slightly splayed and are pulled together prior to achieving torque value. Cannot be acurately torqued with bolt head.
I don't know outside diameter of bearing or inside of hole.
The upper bearing in top of oleo is positioned with thick spacers on each side of the bearing between the landing gear lugs. The nut is torqued on the bolt at 225 inch lbs. Be sure correct amount of washers are used to prevent torqueing against the shank, easy mistake as the lugs are slightly splayed and are pulled together prior to achieving torque value. Cannot be acurately torqued with bolt head.
- Duane
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