Справочник Пользователя для Chamberlain 3585c 3-4hp

To avoid SERIOUS damage to opener, ONLY use
bolts/fasteners mounted in top of motor unit.

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
Threaded
Shaft

Spring/Trolley Nut

The Chamberlain Group, Inc.
Liftmaster Synchro Drive
Spring Trolley Nut Assembly
3/5/92 - 5/16 /92 - 5/21/92 - 6/2/92
6/11/92

Nut
Ring

Trolley
Threaded
Shaft

Nut Ring
Slots

Square
End

Nut Ring

Trolley

Nut Ring

Trolley

1" (2.5 cm)

1-1/4" (3.18 cm)

BEFORE

AFTER RELEASE

Figure 1

Figure 2

Figure 3

ASSEMBLY STEP 1

Attach the Rail to the Motor Unit

To avoid installation difficulties, do not run the garage
door opener until instructed to do so.

• Remove the bolt and lock nut from the top of the motor

unit.

• Place rail onto the bolt mounted on the motor unit and

align the back hole with the hole in the top of the unit.

• Fasten rail with the washered bolt and lock nut

previously removed. Tighten securely. Remember to
use only these bolts/fasteners! Any other
bolts/fasteners will cause serious damage to the
opener.

• Cut tape from rail, belt and styrofoam.

• REMOVE STYROFOAM.

• Position belt over the motor unit sprocket.

Motor unit
Sprocket

Washered Bolt
5/16"-18x1/2"

Styrofoam

Rail
Hole

Lock Nut

USE ONLY THIS

TYPE AND SIZE

BOLT