5 --- Local Motor Shops Permanently Kill a Lot of Servo Motors.
When a Shop Burns-Out a Servo Motor on one of their Machines,
they usually try to go Cheap, and "Give the Local Motor Rewind Shop" a Try.
The Problem Is, Most Motor Shops are Set-Up to Rewind A.C. Motors,
NOT D.C. Servo Motors, which are Very Different!!!
These Motor Shops Always Do 1 of 2 Things;
A --- They Take Apart Motor and Damage Armature & Tach-Armature & Magnet Shell Further. They then "Cut" Commutator, usually Improperly, which Ruins this Critical Part. Finally, they replace Bearings, Cut-Down and Adapt some Brushes to Fit, Paint It, and Declare it "Rebuilt". When Customer gets it Back, it is Still Bad or even Worse than Before. Then Customer (You) is Pissed as you now have a "Rebuild" Bill and your Machine is Still Not Running, and You & Repairman Still Don't Know What's Wrong.
B --- Or, They usually Damage Magnet-Shell, Armature, and the Fragile Tachometer Armature because they do Not Know how to take Motor Apart. They then Screw-Around with Motor a While, then they Give-Up, Throw All Parts Loose & Damaged in a Box, and return the Whole Mess to Customer. Then Customer sends it to Me for a "Trade-In", as I Sell Most Motors on an Exchange Basis. I have been Repairing Strippit's for Over 34 Years and I have seen "A" & "B" above, Over & Over again!
If Anyone has Opened-Up Motor & Tried to "Repair It" I No Longer Will Give Any Credit!
Below, is a Photo of 1 such Servo Motor Just as I Received It from a Customer,
who used a "Local" Motor Shop to "Try to Rebuild".
--- Motor Arrived with Shaft Sticking Out of Box.
--- All Parts were Loose Inside Box.
--- Tach Ring is Broken in to Pieces.
--- Wire was Stripped-Off Motor Armature & Commutator, Damaging Both.
--- Tach Armature had it's Wire Stripped-Off, and is Broken into 2 pieces,
--- Many Parts are Missing.
So, For those of You who are a Little Slow on the Up-Take,
Do Not Take Your Servo Motor Apart,
You Will Damage It !!!
Do Not Take Your Servo Motor To The "Local" Motor Shop,
They Will Damage It Even More!!!