Track Assembly; Powerhead Attachment; Trolley Carriage/ Chain Attachment - Chamberlain T Owner's Manual

WARNING
KEEP DOOR BALANCED. STICKING OR BINDING
DOORS MUST BE REPAIRED. DOORS, DOOR
SPRINGS, CABLES, PULLEYS, BRACKETS AND
THEIR HARDWARE MAY BE UNDER EXTREME TEN-
SION AND CAN CAUSE SERIOUS PERSONAL
INJURY OR DEATH. CALL A PROFESSIONAL DOOR
SERVICEMAN TO MOVE OR ADJUST DOOR
SPRINGS OR HARDWARE.
CAUTION

TRACK ASSEMBLY

1. Using the 3/8"-16 x 3/4 " bolts and flange hex nuts
supplied, assemble the operator track by installing
and tightening the track spacer brackets. Position the
spacers evenly over the length of the track. NOTE:
The nylon pad on the spacer bracket should face up.
2. Using (2) 3/8"-16 x 1" bolts and lock washers,
install the front idler assembly to the second set of
holes of one end of the track. Refer to the illustration
below.
3. Slide the trolley carriage onto the track so that the
take-up bolt will be toward the operator.
FRONT IDLER ASSEMBLY
Reel Chain
around Idler and
over Spacer Brackets
TROLLEY ASSEMBLY
Master Link
Trolley Carriage
Takeup Bolt
Hex Nut
Lockwasher
Hex
Nut
Master Link
Roller Chain
Straight Arm
OPERATOR PREPARATION

POWERHEAD ATTACHMENT

1. Position the track assembly on the frame of the
powerhead so that the motor side of operator is in
back (away from door ).
2. Loosely install two 3/8"-16 x 3/4" bolts and nuts in
third hole from the end of the track .
3. Align the track so that the bolts inserted in step 2
line up with the L-Slots in the frame.
4. Connect the track to the powerhead by fastening
two 3/8"-16 x 3/4" bolts and nuts through the frame
and the end holes in track. Tighten all four bolts to
secure the track to the powerhead.
TROLLEY CARRIAGE / CHAIN ATTACHMENT
1. Attach the take-up bolt to the trolley carriage using
3/8-16 hex nuts and lock washer, as shown below.
2. Using one of the master links, attach the chain to
the other end of the trolley carriage. Reel the chain
around the front idler shaft, over the spacer brackets,
back to the drive shaft sprocket, and then to the take-
up bolt on the carriage.
3. Using the other master link, attach the chain to the
take-up bolt and tighten to the desired chain tension.
Chain Tension: With trolley positioned at either end
of the track, a properly adjusted chain will sag about
3" at the mid-point. If necessary, remove links from
the chain to achieve proper adjustment.
TROLLEY CARRIAGE
Take-Up Bolt
4
WARNING
WARNING
SPACER BRACKET
(Mounted Nylon Pad Side Up)
L - SLOT