ASSEMBLY STEP 1
Attach the T-Rail to the Motor Unit
To avoid installation difficulties, do not run the garage door opener until instructed to do so.
•Remove the two washered bolts mounted in top of motor unit.
•Align
•REMOVE STYROFOAM.
•Insert both washered bolts through the
Use only these bolts! Use of any other bolts will cause serious damage to door opener.
•Position belt over the motor unit sprocket.
CAUTION
To avoid SERIOUS damage to opener, ONLY use bolts mounted in top of motor unit.
Washered Bolt |
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Styrofoam | |
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USE ONLY THIS
TYPE AND SIZE
BOLT
Belt |
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Hole |
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Washered Bolt | Motor unit |
Sprocket |
Hole
ASSEMBLY STEP 2
Set the Belt Tension
•By hand, thread the spring trolley nut on the threaded shaft until it is finger tight against the trolley (Figure 1). Do not use any tools.
•Insert a screwdriver tip into one of the nut ring slots and brace it firmly against the trolley (Figure 2).
•Place a 7/16" open end wrench on the square end. Rotate about 1/4 turn until the spring releases and snaps the nut ring against the trolley (Figure 3).
This extends the spring for optimum belt tension.
Trolley |
| Nut Ring |
| Trolley |
| Nut Ring |
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BEFORE |
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Figure 3
Hole
Trolley
Threaded
Shaft
Spring/Trolley Nut
Figure 1
Trolley
Threaded
Shaft
Nut
Ring
Square
End
Nut Ring
Slots
Figure 2
6