I have to measure the shaft of a boiler motor...

[Fetchez la vache]

Needless to say, the temp is well below freezing and the motor has gone on the (old!) boiler.

Looks like I might be able to get a new motor but I need to measure the length and diameter of the shaft.

So what exactly do I need to measure?



Any ideas would be most appreciated as I haven't much of a clue

I'm assuming i need to take the... err.... water wheel like thing (whatever thats called!) off the end and measure the metal piece that the water wheel is attached to? Does that sound about right?

[Slikk]

Yes. Diameter of the shaft and the length from the body to the end. Dimensions of the keyway (the slot in the shaft if it has one) would also help, but to be honest if you have the details off of the plate it should be straightforward to identify it from this.

Edited by Slikk on Tuesday 6th January 15:47

[Smart roadster]

The water wheel thing is the fan. Yes remove the fan and measure the shaft of the motor. If you are taking to a shop take the motor with you to get a better chance of getting the correct bit.
Good luck getting the fan off. Do not be tempted to pull the fan off by the outer ring. It will distort and then you will need a new one of those as well.

[miniman]

British Gas fixed price repair?

[Fetchez la vache]

Smart roadster said:

The water wheel thing is the fan. Yes remove the fan and measure the shaft of the motor. If you are taking to a shop take the motor with you to get a better chance of getting the correct bit.
Good luck getting the fan off. Do not be tempted to pull the fan off by the outer ring. It will distort and then you will need a new one of those as well.

Strewth you're not joking about getting the fan off. I guess I have to attack it from the other end... thought I cant see any screws that shout out "undo me to get the fan off"

Edit: Thanks for the replys by the way - how rude of me.

Edited by Fetchez la vache on Tuesday 6th January 16:04

[Fetchez la vache]

miniman said:

British Gas fixed price repair?

Nope. Not that it makes much difference but its an oil boiler. We're not on gas, even though there are 2 LNG terminals within 10 miles (must not think about potential blast radius) and a great fookin pipe 3 miles away taking what equates to about 20% of the UKs whole gas supply through it.

Oh the irony.

[Smart roadster]

It looks fairly crusty in the centre. Try cleaning the crud off, I guess you are looking for a grub screw to undo then you will need a puller to pull the hub off the shaft.
If you can get some easing fluid onto the shaft that might help.
If you can't get a puller try a piece of metal either side of the shft between the fan and the motor. Then hit the end of the shaft (not the fan hub, you will need a drift)Until the motor dops out of the fan hub. Only do this if you are quite good with a hammer and totally sure you won't be wanting to use the motor again.

[TheCaseAce]

Fetchez la vache said:

I need to measure the length and diameter of the shaft

For God's sake - almost 20 minutes have passed and nobody has noticed that? What is the world coming to?

You need a tape measure mate - but make sure it's a fabric one, not a metal one. You could really damage your shaft otherwise.

[miniman]

Fetchez la vache said:

miniman said:

British Gas fixed price repair?

Nope. Not that it makes much difference but its an oil boiler. We're not on gas, even though there are 2 LNG terminals within 10 miles (must not think about potential blast radius) and a great fookin pipe 3 miles away taking what equates to about 20% of the UKs whole gas supply through it.

Oh the irony.

Not sure it has to be a gas boiler to be honest. They fix wiring, plumbing, drains and all sorts.

[Olf]

Are you sure it doesn't give you the dims on the manufacturers sticker I can see there.

[Fetchez la vache]

Olf said:

Are you sure it doesn't give you the dims on the manufacturers sticker I can see there.

Alas no. thats to do with the electrics

[martin thomas]

Vernier gauge is what's needed to measure the shaft!!

HTH

Martin