Page 1: ...er pulley assembly and set aside 7 Remove the hall assembly and discard 8 Remove the 1 4 20xl 3 4 bolt and lock nutfrom the trolley stop hole see Figure 1 inthe front rail and set aside 9 Push the trolley beck toward the opener head Disconnect the front rail section by using a screwdriver tip to pry up the outer tab on each side of the rail then slide it off the center rail Discard the front rail ...
Page 2: ...igure 5 onto the shaft until finger tight against the trolley Do not use any tools 20 Remove the Iocldngpliers 21 Set the belt tension Insert a screwdrivertip into one o_the nut ringslots and txe e rr yag nstthetroney as Place a 7 16 opefl end wreflch no the square end Rotate the nutebout 1 4 turn untUthe spdng raieases and sneps the out ringagolnst ti_e trolley Rgure 6 Thissetsmespring to opSrnum...
