12
ASSEMBLY STEP
3
Fasten the T-Rail to the Motor Unit
• Place the opener on packing material to protect
the cover. For convenience, put a support under
the cable pulley bracket.
• Remove the two 5/16"-18x1/2" washered bolts
mounted in the top of the motor unit.
• Align the holes in the back section of the T-rail with
the holes in the motor unit.
• Fasten the rail with the two washered bolts
previously removed. Tighten securely.
Remember
to use only these bolts! Any other bolts will
cause serious damage to the opener.
• Insert a 5/16"-18x7/8" hex bolt into the cover
protection bolt hole in the T-rail as shown. Tighten
securely with a 5/16" lock washer and nut.
NOTE:
This bolt prevents trolley over-travel. Keep a
38 mm minimum between the trolley and this bolt
when adjusting travel limits (see page 29).
•
Attach chain spreader with #8x1” hex screws
and washers as shown.
W
ashered Bolt
5/16"-1
8
x1/2"
T-rail
(Back
Section)
Co
v
er
Protection
Bolt Hole
Nu
t
5/16"-1
8
Hex Bolt
5/16"-1
8
x7/
8
"
Lock
W
asher
5/16"
USE O
N
LY THIS
TYPE A
N
D SIZE
BOLT
Chain
Spreader
#
8
x1"
Hex Scre
w
s
W
ashers
Nut
5/16"-18
Lock Washer
5/16"
Hex Bolt
5/16"-18x7/8"
HARDWARE SHOWN ACTUAL SIZE
To avoid serious damage to opener, ONLY use bolts
mounted in top of motor unit.
WARNING
CAUTION
WARNING
WARNING
