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.
Washered Bolt
5/16"-18
x
1/2"
Rail
(Back
Section)
Cover
Protection
Bolt Hole
Nut
5/16"-18
He
x
Bolt
5/16"-18
x
7/8"
Lock Washer
5/16"
USE ONLY TH
I
S
TYPE AND S
I
ZE
BOLT
Chain
Spreader
#8
x
1"
He
x
Screws
Washers
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/fasteners
mounted in top of motor unit.
