Numatic Henry HVR200 - Stripdown and motor replacement!
I picked this little fellow up from the car boot a few weeks ago for £10. I had been after a diy/car/dirty jobs vac for a while now, and this seemed to fit the bill nicely.
However, it had been heavily abused, and had no suction at all so of course I stripped it down!
First to be fixed was the hose, I chopped off each broken end and put it back together!
Yummy!
Found this stuffed deep in the cord rewind system
it was VERY dusty! No wonder it blew dust out when turned on
Oh, the motor looks fun...
I cant believe this still ran!
Cord rewind cables out
Thermal cutout for the motor removed
identifing the wires one by one
Switch and power socket are out
Power socket stripped down for cleaning
contact rings removed
And onto the motor!
2 bolts under the holders and the top part 'taps' away from the main motor
The fan chamber splits down more now
Fully clogged
still fully clogged!
Pile of rubbish just from the motor
I then moved on to the filter and base
Ah look, a hole! It's all well and good using these bagless but not when the filter is torn!
and filthy!
Took the seal off and cage out and put it in the washing machine along with the hose!
Removed the bag fill neck
and removed the front wheels
Scraped the worse of the rubbish out of the tub
and removed the rear wheels. The whole lot was then washed and scrubbed until it looked lovely again!
And back together!
Sadly however, all this cleaning proved too much for the motor, which suffered armature failure very shortly afterwards. Luckily, I have a spare good motor from an NV250 which I scrapped long ago, so I fitted that to Henry
And put a longer cable on as the original was very short and cut in several places
Nice new bag too
Henry now reached to my shed at the end of the garden without needing an extension lead
And an after video!
As you can hear, he doesnt sound healthy!
So, off with his head!
I started unpicking the wiring
Carbon holders out
I wonder what caused the motor to fill up with hair?
Henry has now helped me clean out several other machines, as well as the shed, the car and the patio! Hopefully he will last another 21 years!
I wondering if you changed the motor carbon brushes? They look completely worn out. That could be the cause of the fault.
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