Install The Trolley - Chamberlain Security+ 3112E FS2 Owner's Manual

ASSEMBLY STEP 2
For Sectional and One-Piece Doors Only

Install the Trolley

• Attach the trolley 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.
NOTE: If trolley hits against any nuts on the
T-rail, the bolts and nuts were attached
from the wrong side and must be
repositioned. Review Assembly Step 1.
ASSEMBLY STEP 3
For Sliding and Swinging Gates Only
Install the Trolley
• Attach the trolley threaded shaft to the trolley with
the lock washer and nuts as shown.
• Insert a hex bolt into the hole in the front end of
the T-rail.
• Slide the trolley assembly along the rail until it
rests against the hex bolt (trolley stop).
NOTE: If trolley hits against any nuts on the
T-rail, the bolts and nuts were attached
from the wrong side and must be
repositioned. Review Assembly Step 1.
Temporary Stop
Screwdriver
Hex Bolt
5/16"-18x7/8"
Hex Bolt
Trolley Stop
Lock Washer
5/16"
Nut
5/16"-18
Lock Washer
5/16"
Outer Nut
5/16"-18
Trolley
Hex Bolt
5/16"-18x7/8"
Lock Washer
5/16"
Outer Nut
5/16"-18
Trolley
11
HARDWARE SHOWN ACTUAL SIZE
Lock Washer
5/16"
Inner Nut
5/16"-18
Trolley
Threaded
Shaft
HARDWARE SHOWN ACTUAL SIZE
Nut
5/16"
Inner Nut
5/16"-18
Trolley
Threaded
Shaft
Nut
5/16"-18
Trolley
Lockwasher
5/16"-18
Cable Pulley
Bracket