Page 1: ...ve the belt assembly and discard 8 Remove the 1 4 20xl 3 4 bolt and lock nut from the trolley stop hole see Figure 1 in the front rail and set aside 9 Push the trolley back 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 10 Align the new front rail with the ...
Page 2: ...e shaft until finger tight against the trolley Do not use any tools 20 Remove the locking pliers 21 Set the belt tension Insert a screwdriver tipinto one of the nut dng slots sr_l brace It firmly agak_stthe trolley as shown Place a 7 16 open end wrench on the square end Rotate the nut about 1 4 turn untilthe spring releases and snapsIhe nut ringagainst file _011ey Figure 6 This sets the springto o...
