Hs81rc clutch drum removal

[mitchel]

Hello,

 

Can anyone please tell me how to remove the clutch drum out of hs81rc I've got it all stripped down removed the circlips does it need pressing out?

 

Thanks

Mitch

[GardenKit]

On the RC version the clutch drum and pinion are one unit and need to gently pressed, or drifted out of the bearing after removal of the circlip.

 

Just be very careful to fully support the casing against the pressures of removal because aluminium will crack quite easily.

 

The T version by contrast has the drum screwed into the pinion.

[openspaceman]

On the RC version the clutch drum and pinion are one unit and need to gently pressed, or drifted out of the bearing after removal of the circlip.

 

 

The T version by contrast has the drum screwed into the pinion.

 

I thought this was a safety mechanism on the R version, the brazing shears to protect the rest of the drive train

??

 

I didn't realise the T version was different as we only do rough stuff and get through a number of drums on the 30" hs81R

[mitchel]

On the RC version the clutch drum and pinion are one unit and need to gently pressed, or drifted out of the bearing after removal of the circlip.

 

Just be very careful to fully support the casing against the pressures of removal because aluminium will crack quite easily.

 

The T version by contrast has the drum screwed into the pinion.

 

Yes it's an rc what does drifted mean or am I best off taking it to be pressed out

[GardenKit]

Yes it's an rc what does drifted mean or am I best off taking it to be pressed out

Drifting is basically tapping it out with a hammer and punch (drift).

I would do this before putting it in a press, but either way requires finesse and an instinctive 'feel' By that I mean you hit it hard enough to move it but not so hard as to cause damage.

 

Support the housing on blocks which spread the load as far as possible and evenly around the gear case. Leave sufficient room underneath for the drum to drop when it is free.

 

I would use a brass or aluminium drift (punch) to tap the pinion down through the bearing.

 

Hitting things with a hammer is actually quite a skilled task, but then so is using a press especially a 25 tonne one like mine.

[GardenKit]

I thought this was a safety mechanism on the R version, the brazing shears to protect the rest of the drive train

??

 

I didn't realise the T version was different as we only do rough stuff and get through a number of drums on the 30" hs81R

I don't know if its actually designed to shear or whether it just happens that way. Sound feasible though.

[karl]

when I done my first one I actually done a google search a brilliant little step by step screw by screw guide came up . it was an easy job when you hade the correct routine