Got a fairly old Kango model 627 and need to remove copper coil

The sparks are generally seen where the carbon brushes meet the copper commutator on the motor spindle. This is actually fairly normal. You can lessen it by spraying with some light machine oil, but eventually you will need to replace the carbon brushes.

This is going to be tricky. Kango was bought out by Milwaukee tools and that model is not available. The springs you are going to need to measure with a caliper for length, width and diameter of the wire. Compression specs becomes an issue. http://www.leespring.com/browse_catalog.asp?springType=C&partNum=LHL*&xsearch=Search

The seal is the least of your worries because you can get sheet gasket material or use silicon gasket material in a tube. The brushes are another issue. https://www.repcoinc.com/brushes/

The carbonbrushes if they are short and you will replace them there is a long brown wire on one of the 2 brushes thats goes inside the handgrip but be careful there are 2 plastic pieces for the power licht and the carbon brush is on a electronic modul inside the handgrip by a sliding contact 90 degrees beware also on the black damping rings inbetween the machine and handgrip 4 pieces to protect vibrations . if you have open the handgrip i will say that you allways control the bearing at the end of the armature because its a very to small choosen bearing that is oft in bad condition i mean it , if it has its operating hours if the carbon brushes are short.but the handgrip must be opened for remove the brushes.

Try www.oasistools.co.uk

Hi Vicki
Is it the old all silver one or the new one with the red motor housing?

What kango hammer do you have? I am most familiar with the UK kango 900 and 950, pre-milwaukee.

thease coal like things are carbon brushes and need to contact copper coils for mixter to work so replace the carbon brushes and it will work again

what country are you in? in australia atlas copco are the distrbutors. i`m sure you can find out on the internet

When copper and aluminum are connected it cannot be welded, it has to be crimped. this is a problem that is not exclusive to sub zero, an all aluminum evaporator ( if it is in the refrigerator it's an evaporator) should resolve the problem nicely

Sounds like motor brushes may be going. Is the vacuum cleaner old? I suggest bringing the unit in for service to replace the motor brushes. Get a quote to see if is worthwhile to fix.