Gallery, Projects and General > How do I??
Fan removal
RobWilson:
--- Quote from: John Rudd on April 01, 2016, 01:06:43 PM ---Why repair? Ermmm well not so much a repair but a refurb....sentimental reasons....
(err no 'mental' jokes plz... :lol:)
--- End quote ---
Was actually going to go for a Yorkshireman joke :lol: :lol: :)
Anyway is it off mate ? :poke:
Rob
John Rudd:
Nope!
A closer look at it, showed that the fan is moulded around the metal boss....so the back side of the boss is covered by the plastic fan.....
I'm guessing if I want this off it aint coming off whole.....
I just wonder if some localised warmth from my hot air desoldering station might be enough to free the boss from the shaft without melting the fan?
Thoughts? :scratch:
awemawson:
John,
The whole fan / armature assembly MUST come out of the field coils somehow. Give us a few photographs of the rear end. There will be a way of removing the brushes, and they will need to come out first. I bet that the back end of the armature sits in a bearing which sits in the die-casting - may even be a self aligning spherical bronze bush.
Have you seen this video:
John Rudd:
Andrew,
I appreciate your comments.....but....
The way the 'motor' is assembled is like this:
Take the field coil assembly, insert from the front, the armature, carrying its front bearing and support bracket. Add from the rear, the rear bearing support bracket c/w brush box assembly. Now, from the front support bracket add the through bolts to clamp the assembly together. Add the brushes to the holders.
Job done....
The rear bearing housing is bolted on from the front so it cant be removed......
So, basically the fan has to be removed first, the front bearing housing is fastened to the drill casing from the front too, the securing screws are behind the fan, once removed, the whole motor assemble emerges from the back of the drill housing......You can see the mounting lugs in the body around 7:13 in the video....
His strip down was made easier because his fan had broken in two...
awemawson:
Can you not drill a hole through your fan to line up with the offending retaining bolts, and unscrew them :scratch:
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