Chamberlain 5100-2K Install the Trolley on the T-rail, Fasten the T-railto the Opener, Actual Size, Hardware Shown, Hardware Shown Actual Size

Assembly Step 2

Install the Trolley on the T-rail

•Attach the threaded shaft to the trolley with the lock washer and nuts as shown.

			Inner Nut
		Lock Washer	5/16"
	Outer Nut	5/16"
	5/16"		Trolley
			Threaded
Trolley			Shaft

Hardware Shown

Actual Size

Lock Washer	Nut	18	Trolley
5/16"	5/16" -

Temporary Stop

Screwdriver

• As a temporary stop, insert a screwdriver into the

Washered Screw

hole in the 5/16"front-18x1/2"end of the T-rail.

		USE ONLY THIS
• Slide the trolley assembly along the rail to the
Hex Screw	stop.	TYPE AND SIZE
5/16"screwdriver-18x7/8"		SCREW

If trolley hits against the nut on theT-rail, the

Trolley

boltsStop Holeand nuts were attached from the wrong side and must be repositioned. Review Step 1.

T-Rail

Assembly Step 3

Fasten the T-rail to the Opener

•Place the opener on packing material to protect the cover. For convenience, put a support under the cable 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 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 UP direction.

CAUTION

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"

Hex Screw	USE ONLY THIS
	TYPE AND SIZE
5/16"-18x7/8"	SCREW
Trolley
Stop Hole
T-Rail
(Back Section)
Lock Washer
5/16"
Nut
5/16"-18

Hardware Shown Actual Size

Hex Screw	Nut	Lock washer
5/16" - 18 x 7/8"	5/16"-18	5/16"

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