Ft200

[nomis]

I want to check my CWP visually and reseal the diff on my FT200 gearbox. So question is what side do I open first and is there anything I need to think about or do before resealing
thanks apexers

[Charles Warner]

I want to check my CWP visually and reseal the diff on my FT200 gearbox. So question is what side do I open first and is there anything I need to think about or do before resealing
thanks apexers

Should be the left side. When resealing, use black RTV liberally on the outer flange and use hardened washers (not AN) with new standard (not locknuts) nuts. Tighten the nut, and then put another one on top of it and tighten it. Wait 48 hours. Then, if you wish, you can replace those nuts with either nylock or MS 21042 nuts. On the through bolts make sure they are clean and straight and use the same procedure, or find an appropriately long NAS bolt (very expensive). Hardened washers is critical.

If your gearbox has ben modified to use bolts instead of studs use some form of vibration resistant thread locker, such as VC-3 Threadmate, again with hardened nuts.

[nomis]

thanks Charles, what are the nuts you are talking about ? grade 8 ? I only know jet and nylock. good point on the hardened washers ! I use hardened everywhere there is Mag

[Ken Lawrence]

[Garey Guzman]

They should sponsor me:
https://www.aircraftspruce.com/catal...es/ms21042.php

[Charles Warner]

thanks Charles, what are the nuts you are talking about ? grade 8 ? I only know jet and nylock. good point on the hardened washers ! I use hardened everywhere there is Mag

Commonly called Jet Nuts. They can be reused as long as you can achieve the proper torque.

10-32 5 ft lbs
14-28 12 ft lbs
5/16-24 30 ft lbs
3/8-24 44 ft lbs

[Raleigh]

You get a good view of the pinion through the top oil filler plug. Wear on the pinion is basically ten fold of the crown wheel so gives an indication of potential crown wheel condition.

https://www.phase-trans.msm.cam.ac.u...sarennah/a.pdf

[nomis]

Yes but the side plates are leaking so really this is the primary reason