Chamberlain 8200 1/2 HP Install the Trolley on the T-rail, Faster the T-rail to the Opener

Assembly Step 2

Install the Trolley on the T-rail

Trolley

•As a temporary stop, insert a screwdriver into the hole in the front end of the T-rail.

•Slide the trolley assembly along the rail to the screwdriver stop.

If trolley hits against any nuts on the T-rail, the bolts and nuts were attached from the wrong side and must be repositioned. Review Step 1.

Temporary Stop

Screwdriver

Hex Screw

5/16"-18x7/8"

Trolley

Stop Hole

Lock Washer 5/16"

Nut 5/16"-18

•Insert a 5/16"-18x7/8" hex screw into the trolley stop hole in the T-rail as shown. Tighten securely with a 5/16" lock washer and nut. This screw limits trolley travel in the DOWN direction.

Assembly Step 3

Faster the T-rail to the Opener

•Place the opener on packing material to protect the cover. For convenience, put a support under the belt pulley bracket.

•Remove the (2) 5/16"-18x1/2" washered screws mounted in the top of the opener.

•Align the holes in the back section of the T-rail with the holes in the opener.

•Fasten the rail with the (2) washered screws previously removed. Tighten securely.

Remember to use only these screws! Any other screws will cause serious damage to the opener.

•Insert a 5/16"-18x7/8" hex screw into the cover protection bolt hole in the T-rail as shown. Tighten securely with a 5/16" lock washer and nut.

NOTE: This screw prevents trolley over-travel. Keep a 2" minimum between the trolley and this screw when adjusting travel limits (see page 28).

Hardware Shown Actual Size

CAUTION

To fasten rail, use only those screws mounted in the top of the opener. Any other screws will cause serious damage to the opener.

Washered Screw

5/16"-18x1/2"

USE ONLY THIS

Hex Screw	TYPE AND SIZE
5/16"-18x7/8"
	SCREW

Cover Protection

BoltHole

T-Rail

(Back Section)

Lock Washer

5/16"

Nut

5/16"-18

Hex Screw	Nut	Lock Washer
5/16"-18x7/8"	5/16"-18	5/16"

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