009028 Linear/Allstar 4-1/4" Clutch Disc Commercial Opener Garage Door Operator
Linear 009028 clutch disc (pad) is a replaceable part for the Linear
commercial jackshaft and trolley garage door openers. The clutch disc
can wear out over time from normal use and should be replaced when it
becomes difficult to tighten the clutch to obtain a smooth operation of
the door when it is in good working condition. Consult the garage door
opener manual for instructions on proper replacement.
It's also a
good idea to check the condition of the v-belt while you have the clutch
assembly apart and replace the belt if needed. A 5L-350 v-belt is required for the model T series Linear trolley operators. A 4L-390 v-belt is required for the AUJ-S and AUH-S jackshaft operators.