9
ASSEMBLY STEP 2
Install Trolley
• Attach trolley threaded shaft to trolley with lock
washer and nuts as shown.
• As a temporary stopo, insert a screwdriver into hole
in front end of the T-rail.
• Slide trolley assembly along the rail to the
screwdriver stop.
If trolley hits against nut on the T-rail, the bolts
and nuts were attached from the wrong side and
must be repositioned. Review Step 1.
ASSEMBLY STEP 3
Fasten T-Rail to Opener
• Place the opener on packing material to protect the
cover. For convenience, place a support under the
chain pulley bracket.
• Remove the (2) 5/16"-18x1/2" washered screws
mounted in the top of the opener.
• Align holes in the back end of T-rail with holes in
opener.
• Fasten the rail with the (2) washered screws
previously removed. Tighten securely.
Use only these screws! Use of any other screws
will cause serious damage to door opener.
• Insert a 5/16"-18x7/8" hex screw into the cover
protection bolt hole in the T-rail as shown. Tighten
securely with a 5/16" lock washer and nut.
NOTE: This screw prevents trolley over-travel. Keep
a 25mm minimum between the trolley and this
screw when adjusting travel limits (see page 23).
Model 1120E Only:
Attach chain spreader with
#8x1" hex screws and washers as shown.
To fasten rail, use only those screws
mounted in the top of the opener. Any
other screws will cause serious
damage to the opener.
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