Hammond E112 Motor removal

[Tony Rendell]

Just purchased a beautiful hammond E112 complete with peddle board. had a transformer blowen which i replaced.when i fired it up everything works grear, but there is a vibration in the motor.when you put a little down pressure with your finger it dissapears.the rubber mount on the TWG look good.
any idea what could be causing the vibration, and how do you remove the motor.
tks
tony
australia

[tpappano]

The motor is secured to the motor mount by two spring steel clips going over the top of the rubber vibration dampers. The clips have small slots that snap onto small projections on the lower mounts. You can pop them loose with a screwdriver. Look very closely and you will see a small curve at the end of the clip. Push downward with the screwdriver blade and it may be released. The motor will lift right out.

[Tony Rendell]

thanks tom ill give that a go.

[Tony Rendell]

Tom,any idea why it would have the vibration, but with a little down pressure it stops

[Tony Rendell]

Couple of pictures, was a one owner, very clean throughout.

[enor]

A faulty run capacitor can cause excessive vibrations, if it's drifted so that its value is all wrong (and therefor causes an uneven phase shift). The capacitor in this organ doesn't look like the original - check that it has been replaced with the correct value!

Since you're in Australia (230V/50Hz) I'm guessing the organ is a 230V/50Hz model too, and not an imported and converted US model. Sometimes people misread or misunderstand and fit a US-spec capacitor to a 50Hz organ.

You should have a 1.25uF (or thereabouts, 1.2 is fine) capacitor.

[Tony Rendell]

Hi Enor. thanks for the info.when i picked up the organ from the old lady it wasn't going. my mate checked it out and found the transformer was blowen. we got one from geoff hammond service in melbourne. I know nothing about electronics and my mate that replaced the transformer lives 3hrs away. i am assuming the caps are the two black box's mounted next to the motor. ive taken a photo to see if im on the same page and they read 3.0 uF-U.
Appreciate your help.

[Tony Rendell]

A faulty run capacitor

[Tony Rendell]

The motor is secured to the motor mount by two spring steel clips going over the top of the rubber vibration dampers. The clips have small slots that snap onto small projections on the lower mounts. You can pop them loose with a screwdriver. Look very closely and you will see a small curve at the end of the clip. Push downward with the screwdriver blade and it may be released. The motor will lift right out.

Got it Tom, worked out the vibration comming from the rubber mounts on the motor.front one closest to coupling is loose on the motor rear one is tight.is the motor shaft helding into the spring coupling with a grub screw ( which im assuming has to be unscrewed to pull motor from the coupling.

[tpappano]

The brass fitting on the motor shaft is held with a setscrew, but you don't need to remove it. When you lift out the motor the brass piece simply slides out of the coupling spring.

[tpappano]

The run capacitors look like a proper replacement was performed so they should be fine.

[Tony Rendell]

The run capacitors look like a proper replacement was performed so they should be fine.

Thats great Tom.Tks heaps.yes i checked with my mate that did the transformer replacement,and he said the two work out to 1.5

[enor]

... which is a tad on the high side, they should ideally be 1.25uF. But I don't think that's far enough off to cause noticeable extra vibrations

[Tony Rendell]

Enor, i worked out the vibration is comming from the front motor support, so i swapped the mounts around and it is now quiet as a mouse.running perfect.
thanks to all you guys for your assistance and guidance. fantastic help.