Install The Trolley - Chamberlain 4142DC Owner's Manual

ASSEMBLY STEP 2

Install the Trolley

FOR SECTIONAL AND ONE-PIECE DOORS ONLY
• 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 rail.
• Slide the trolley assembly along the rail to the screwdriver stop.
NOTE: If trolley hits against any nuts on the rail, the bolts and
nuts were attached from the wrong side and must be
repositioned. Review Assembly Step 1.
ASSEMBLY STEP 2
Install the Trolley
FOR SLIDING AND SWINGING GATES ONLY
• 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 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 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"
Inner Nut
5/16"-18
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"-18
Trolley
Threaded
Shaft
Nut
5/16"-18
Trolley
Lockwasher
5/16"
Cable Pulley
Bracket