Chamberlain 5100-2K - Manual (Page 9)

Hardware Shown
Actual Size
Assembly Step 2
Install the Trolley on the T-rail
• Place the opener on packing material to protect
the cover. For convenience, put a support under
the cable pulley bracket.
• Remove the (2) 5/16"-18x1/2" washered screws
mounted in the top of the opener.
• Align the holes in the back section of the T-rail with
the holes in the opener.
• Fasten the rail with the (2) washered screws
previously removed. Tighten securely.
Remember to use only these screws! Any other
screws will cause serious damage to the opener.
• Insert a 5/16"-18x7/8" hex screw into the trolley
stop hole in the T-rail as shown. Tighten securely
with a 5/16" lock washer and nut. This screw limits
trolley travel in the UP direction.
Washered Screw
5/16"-18x1/2"
USE ONLY THIS
TYPE AND SIZE
SCREW
T-Rail
(Back Section)
Trolley
Stop Hole
Nut
5/16"-18
Hex Screw
5/16"-18x7/8"
Lock Washer
5/16"
9
• Attach the threaded shaft to the trolley with the
lock washer and nuts as shown.
• As a temporary stop, insert a screwdriver into the
hole in the front end of the T-rail.
• Slide the trolley assembly along the rail to the
screwdriver stop.
If trolley hits against the nut on the T-rail, the
bolts and nuts were attached from the wrong
side and must be repositioned. Review Step 1.
Temporary Stop
Screwdriver
Trolley
Trolley
Threaded
Shaft
Lock Washer
5/16"
Outer Nut
5/16"
Inner Nut
5/16"
Trolley
Washered Screw
5/16"-18x1/2"
USE ONLY THIS
TYPE AND SIZE
SCREW
T-Rail
Trolley
Stop Hole
Hex Screw
5/16"-18x7/8"
Assembly Step 3
Fasten the T-rail to the Opener
Use only those screws mounted in the top of the
opener. Any other screws will cause serious
damage to the opener.
Lock Washer
5/16"
Nut
5/16" - 18
Nut
5/16"-18
Lock washer
5/16"
Hex Screw
5/16" - 18 x 7/8"
Hardware Shown Actual Size
CAUTION