Craftsman 139.53677SRT1, 139.53671SRT1 Assembly Step, Install the Trolley on the T-rail

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.

	LockWasher
	5/16"
Outer Nut		Tro!ley
5/16"_	Threaded
	InnerNut	Shaft
	5/16"

Trolley

TemporarySlop

Screwdriver

Hardware Shown

Actual Size

©©

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

•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 reposltioned. Review Step 1.

Assembly Step 3	I
Fasten the T-rail to the Opener	I

•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"-18xl/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 nuL

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

WasheredScrew

5/16".18xl/2"

Hex Screw

5/16"-18x7/8"

Cover \

Protection

Bolt Hole \,

T..raJl

(B=ckSection).

5/16"

NUt" 5/16"-18

5/16" - 18 x 7/8" 5/16; 18 5/16"

9