Q. My servo gears broke, how do I change them?
A. Hitec offers gear sets for all our servos and these are available from your local hobby shop or from a mail order retailer.
To replace the gears on any servo, carefully lay out the new gears on a clean work surface to have them available for re-assembly. You will also need a supply of servo gear lubricant, we suggest the Hitec lube part # 58450. Loosen or remove the screws located on the bottom of the servo case enough to pop the upper case off and expose the gears. If any gears or shafts are stuck in the upper case, remove them and plug them back into position on the lower case.
Now carefully remove the gears while placing them in approximate order on your work surface in front of you. This is done so you can refer back to their positioning as you assemble the new set into the lower servo case. Clean all the old lubricant from the servo case in both the lower and upper case components. Be aware of small chunks of gear material that may be lodged in the lubricant and get it all cleaned out. Apply servo gear lube to the shafts and assemble the geartrain applying lube to all gear components. When complete, pop the case top back on and tighten up the case screws.
CAUTION: Do not force the case top back on. If it will not fit back on smoothly, chances are the gears were installed incorrectly.