Common trouble and troubleshooting remedies for governor
Unsteady speed (engine
hunting):
① Inflexible flyweight or
flyweight holder of
governor.
② Improper idle adjustment
③ Governor components
worn out
Determine the location of the troubles, and then
repair it, replace parts and wash it if necessary.
Readjust the idle adjusting screw.
Check and repair it. (By specialist manufactures)
Speed always lower than
calibrated speed.
① Adjusting spring
deflection.
② Control handles
mis-positioning.
③ Adjusting rack and pull bar
jammed or loose.
Regulate properly and replace the spring by
professionals, do not do it without authorization.
Determine the location of the blockage, and then
regulate and remove it.
Check and adjust it, then ensure the rack slides
flexibly and the gear ring is not loose, otherwise
readjust and repair it.
Speed rising promptly to
abnormal state(runaway)
① Adjusting rack or throttle
pull bar stuck.
② The pin connecting
adjusting rack and pull bar
drops.
③ Governor spring crack.
Regulate and repair it.
Reinstall it and, if necessary, replace the damaged
parts.
Replace it and then readjust the injection pump on
test bench.
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