This instuctable is created for the average person; that they can do with household supplies, while more professional tools can be used in place of others at will.
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Step 1: Initial diassembly
They are all the same size, so no marking of the locations of the screws is required.
-Pull the case apart, it should separate easily!
-snake the motor out, the wires will be somewhat stuck and twisted around near the wire outlet hole.
Step 2: Gearbox Disassembly
-PAY ATTENTION on how the red/yellow reduction gears go!! Once you know how they go in your head or drawn on a piece of paper, remove them by sliding them off their shafts.
-Congrats, you now have the motor dissassebled!
Step 3: Gearbox lubrication and assembly
-Give ONE drop to each shaft!
-Put one "layer" of reduction gears on and dip your pencil into the Vaseline(petroleum jelly) Dab a little bit on the gears. Not TOO MUCH, just right!!
-put the other "layer" on and daub some more jelly on there.
- Put some jelly on the gear teeth and parts the rotate in the motor case on the forward output gear. Reinstall in case.
- Daub some on the same areas as the front output on the side output gear. Reinstall..
-Reinstall the side output gear so all teeth mesh right!