Справочник Пользователя для Chamberlain 3585s 3-4 hp

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

•  

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.

6

•  

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.

Motor unit
Sprocket

Washered Bolt 
5/16"-18x1/2"

Styrofoam

Rail
Hole

Lock Nut

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