How to fix Ferret Hub oil seal.

[tankdiver]

PART 1.

 

Ferret hubs are not for the faint hearted and some skill is needed to do them!

the allen bolt must

have a good fitting key

On this hub I found a stay piece of gasket

which if it had found its way into the eppicyclic gears

it would have destroyed them

Undo the tab washer and

large nut

undo the nuts holding the outer bearing then using

a 5/16 unf bolt draw it off [ spanners shown in the next picture]

 

 

Note the position of this gasket.

Ensure all the needle rollers are counted

there should be 24 for each planet gear

whenever it was built on this Ferret one of the planets had only 23

the planet and carrier was changed and a new set fitted

Place all parts on a clean surface and replace any damaged items

[tankdiver]

PART 2

 

 

 

 

Using 5/16 unf bolt remove plate

 

Always count needle rollers

when removing and fitting

 

Shows SUN, PLANETS and ANNULUS.

 

All part kept together.

 

Shows the taper roller bearings

these should easily be removed.

on this Ferret they were extremely

hard to remove. If you are unable

to remove a large puller is required.

[tankdiver]

PART 3

 

shows plannets removed

 

 

remove washer

 

Planet carrier

 

 

Using leavers to remove hub

By applying even pressure

it should come off BUT....

 

Now using a large puller

 

 

using WD 40 to help the inner bearing to come off but

another puller was required .The shaft needed cleaning of

to allow the bearings to slide on and off easily

[tankdiver]

PART 3

 

When I came to Fit the oil seal from my parts I noticed the seal was correct on the outside diameter but the internal diameter for the shaft was two large. The dealer that had supplied me replaced them F.O.C. as they had been supplied with the incorrect seals

The planet, sun and annulus holder being fitted.

The retaining bolts had all the locking devices,

but had signs of lock tight sealer on the threads

so this was cleaned off and a small amount applied

 

 

showing the small roller bearing retaining washer

When building up the hubs rotate the hub by hand

ensuring nothing has jammed .

 

 

Using a flexible sealing compound

on the hub

 

 

 

New allen bolts with sealant on threads

[jim fl4]

Great tutorial with excellent photos to explain things even better. I would welcome any photos of the 'distance piece', that's the spacer at the back of the sun wheel. I happen to need a pair of these, the spaces that is! the manual talks of them coming in three sizes.

 

What did the shims look like which came off with the Sun wheel pls.?

 

Thanks for taking the time to post .

 

Jim

[MiketheBike]

I LOVE pictures!

thanks for posting

[tankdiver]

Great tutorial with excellent photos to explain things even better. I would welcome any photos of the 'distance piece', that's the spacer at the back of the sun wheel. I happen to need a pair of these, the spaces that is! the manual talks of them coming in three sizes.

 

What did the shims look like which came off with the Sun wheel pls.?

 

Thanks for taking the time to post .

 

Jim

Hi Jim I will have a look in one or two of my parts boxes

Laurence

[Grasshopper]

I carried out this work in a grassy/muddy field. I found a magnetic parts tray very useful for catching and retaining all the needle rollers in!