Eight-Foot Chain Rail Extension Kit
Model 6608CD
BEFORE YOU BEGIN:
If you have a completely installed garage door opener, the rail/opener
assembly must be taken down.
• The garage door opener support brackets will require repositioning and
the addition of an extra bracket for stability due to increased rail length.
• UP and DOWN travel limits must be readjusted after installation.
CARTON INVENTORY:
Front Rail Section
Support Bracket and Fastening Hardware
Chain Extension Piece
Emergency Release Rope
Master Link
To prevent possible SERIOUS INJURY or DEATH:
• Disconnect ALL electric and battery power BEFORE performing ANY
service or maintenance.
The garage door MUST be in the fully closed position during
installation.
WARNING:
This product can expose you to chemicals including
lead, which are known to the State of California to cause
cancer or birth defects or other reproductive harm. For more
information go to
www.P65Warnings.ca.gov
IF THIS IS AN EXISTING INSTALLATION:
1. Pull down on the emergency release handle, then disconnect the
trolley from the door arm.
2. Disconnect the rail/opener assembly from the header bracket and
support brackets, and place it on the floor.
3. Remove the outer nut from the trolley shaft and set aside (Figure 3).
4. Disconnect the chain from the trolley and trolley threaded shaft. Save
the master link assemblies for reinstallation.
NOTE:
To disconnect the master link, press on the open end of the clip.
5. Set the chain aside as it will be used to complete the extension kit.
Make sure it does not get twisted.
6. Remove idler pulley assembly and set aside (Figure 4).
7. Disconnect the front rail section by using a screwdriver tip to pry up
the outer tab on each side of the rail (Figure 5). Discard the front rail.
8. Align the replacement front rail section with the existing rail making
sure the rail tab is facing up. Slide the front rail onto the existing rail;
tabs along the side will lock into place (Figure 6).
IF THIS IS A NEW INSTALLATION:
1.
Replace the emergency release rope packaged with your garage door
opener with the longer emergency release rope included in this kit.
2.
Use the front rail section included in this kit in place of the front rail
section packaged with your garage door opener (Figure 1).
3.
Connect the chain extension piece to the full chain packaged with
your garage door opener using the master links (Figure 2).
4.
Refer to Assembly Step 1 in your owner’s manual to complete the
assembly, installation and adjustment of your garage door opener.
When instructed, connect the trolley threaded shaft to the end of the
chain extension piece.
NOTE:
After hanging the opener, add the additional support bracket for
stability. See Add An Additional Support Bracket on reverse side.
Rail Tab
Trolley
Threaded
Shaft
Outer Nut
Replacement
Front Rail Section
Existing Front Rail Section
Idler Pulley
Master Link
Master Link
Trolley
Chain extension piece
included in kit
Full chain packaged with
garage door opener
Trolley threaded shaft packaged
with garage door opener
Master link
Master link
Rail sections packaged with
garage door opener
Front rail section
included in extension kit
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
