Replace SeRvo GeaRS
Save that servo in five steps by The RC CaR aCTion Team
Steering servos get a workout no matter what terrain
you’re in, especially when
they have to tame heavy
CONFIRM THAT THE
SERVO GEARS ARE BAD
What may seem like bad servo gears may just be a stripped
servo horn or broken linkage, so closely examine your car or truck’s
steering system before you begin disassembling anything. Power
up your vehicle and operate the steering. If you can hear the motor
inside the servo whirring but the output shaft isn’t moving (or it’s
moving intermittently and/or making clicking or gnashing noises),
then you know you’ve got a bad set of gears.
It’s hard to think of any component in an off-road car or
truck that doesn’t take a pounding, but steering servos
have to be near the top of the list for abuse absorption.
Every time you hammer through rough terrain, even when
the front wheels are straight, the servo is working hard to
keep those wheels pointed where you want them. And when
you do turn, the steering servo is loaded even more. Jolts
from hitting obstacles (or when you clobber a rock or the
curb) strain the gears inside the servo and can result in
broken gear teeth. Or the gears can simply wear out. Either
way, the fix does not have to be a new servo; in most cases,
you can simply replace the gears. Here’s how.
Look up your servo on the
manufacturer’s website to get
the correct part number for a
replacement gear set.
Power up the servo and confirm that you’ve got a gear problem before you start tearing