Position opener chassis, Steps, Installation – Craftsman 139.535006 User Manual
Page 12: Step 4, One-piece, With, Door, Track installation, Door with no - track installation
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Installation
STEPS
Attach Tee Rail to Header Bracket
PROCEDURE:
Position opener chassis on garage
floor below door and header brackets. Use packing
material base to protect cover,
iSiOTE: To enable
Tee rail to clear sectional door springs, it may be
necessary to lift the chassis onto a temporary
support.
CAUTION: Chassis must either be secured to sup
port or held firmly in place by another person.
Raise Tee rail until cable pulley and header brackets
come together, Align bracket holes and join with
clevis pin as shown. Insert and spread cotter pin to
secure.
STEP 4
Position Opener Chassis
TO PREVENT DAMAGE TO ALL LIGHTWEIGHT DOORS, AND DOORS WITH WINDOWS, DO NOT RESTTHE
OPENER ON THE DOOR.
SECTIONAL and
ONE-PIECE
DOOR
WITH
TRACK
INSTALLATION
NOTE:
A
2x4 Is convenient for setting an ideal
door-tO'Tee rail distance. It is not necessary
where headroom is insufficient.
PROCEDURE:
Raise the opener chassis onto a
stepladder. Open the garage door. Place a 2x4 on
edge on top section of door
directly above door
bracket.
Rest Tee rail on 2x4,
ONE-PIECE
DOOR
WITH NO - TRACK
INSTALLATION
PROCEDURE:
Measure the distance from floor to
top of door (in fully open position and parallel to
floor).
Using a stepladder as a support, raise the opener
chassis to the same distance from the floor (chassis
will have a slight angle as shown)
The top of the door should be level with the top of the
opener For maximum efficiency, do not position the
opener chassis more than 2 inches above this point,
Top of Opener
12