question Ferret Hub Oil Leak

[Diana and Jackie]

Hi All,

 

Please can someone/anyone confirm whether or not a Ferret hub cap can be removed and then the outer planet gear without removing all the bits that makeup the inner gearing.

 

The joint between the outer planetary gear and hub cap is leaking oil, We'd like to just renew the joint without disturbing the second joint, but knowing how things like this go, the second joint is likely to need renewing too.

 

D&J

[Richard Farrant]

Hi All,

 

Please can someone/anyone confirm whether or not a Ferret hub cap can be removed and then the outer planet gear without removing all the bits that makeup the inner gearing.

 

The joint between the outer planetary gear and hub cap is leaking oil, We'd like to just renew the joint without disturbing the second joint, but knowing how things like this go, the second joint is likely to need renewing too.

 

D&J

 

Hi Diane and Jackie,

 

Go for it ! Remove all cap screws from face of cap and remove cap, no other parts effected, the ring gear is retained by some more cap screws, so you will not disturb that joint. Don't use silicone, Hylomar is what we always used when they were in service.

regards, Richard

[Diana and Jackie]

Thanks yet again Richard,

 

This very problem looks like the result of using Silicon!

 

We're well stocked up on Hylomar - ebay being the cheapest.

 

Even have new cap screws (which we'll get plated locally) from Severn Valleys Fasteners, though the Cap holes will have to be counterbored as the Cap screws, although 5/16 UNF need a 1/4" hex key rather than 3/16". and therefore are around 1mm diameter larger in the head.

 

D&J

 

 

 

Hi Diane and Jackie,

 

Go for it ! Remove all cap screws from face of cap and remove cap, no other parts effected, the ring gear is retained by some more cap screws, so you will not disturb that joint. Don't use silicone, Hylomar is what we always used when they were in service.

regards, Richard

[griff66]

try with flat surface and sheet of wet and dry making sure contact face is flat as as u will see or have! mating surface is very small!

[robin craig]

Dear D + J,

 

I ran into that problem of the heads of the socket head cap screws when using civvy replacements inside my Ferret gearbox, spun them up in a lathe and turned them down.

 

R

[Diana and Jackie]

Yes something to be aware of when buying countersunk cap screws, the thread size maybe correct but the head size is too big (or small).

 

Did consider grinding down the head but maybe it would weaken the head's ability to stand the torque of the allen key, so it's going to be counter boring the existing hole.

 

Why the heads are different is a mystery, one supplier suggested something to do with post and pre1960.

 

D&J

 

 

 

 

Dear D + J,

 

I ran into that problem of the heads of the socket head cap screws when using civvy replacements inside my Ferret gearbox, spun them up in a lathe and turned them down.

 

R