Craftsman 139.3043 Assemble the Rail and Install the Trolley, Fasten the Rail to the Motor Unit

ASSEMBLY STEP 1

Assemble the Rail and Install the Trolley

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

The front rail has a cut out "window" at the door end

(see illustration). The hole above this windowis larger on the top of the raft than on the bottom. A smaller hole 3-1/2" (8.9 cm) away is close to the rail edge. Rotate the back rail so it has a

similar hole close to the oppositeedge, about 4-3/4" (12 cm) from the far end.

1.Assemble the trolley by sliding the inner trolley into the outer trolley.

2.Removethe straight door arm and hanging bracket packaged inside the front rail and set aside for Installation Steps5 and 9. NOTE: To prevent INJURY while unpacking the rail carefully remove the straight door arm stored within the rail section.

3.Align the rail sections on a flat surface as shown and slide the tapered ends into the larger ones. Tabs along the side will lock into place.

4.Placethe motor unit on packing material to protect the cover, and rest the back end of the rail on top. For convenience,put a support under the front end of the rail.

5.As a temporary stop, insert a screwdriver into the hole 10" (25 cm) from the front end of the rail, as shown.

6.Checkto be sure there are 4 plastic wear pads inside the inner trolley. If they becameloose during shipping, check all packing material. Snapthem back into position as shown.

7.Slide the trolley assembly along the rail from the back end to the screwdriver.

To prevent INJURY from pinching, keep hands and fingers away from the joints while assembling the rail.

Outer

Trolley

Inner

Trolley

Wear Pads

RAIL (TOP)

KEEP LARGER

HOLEON TOP

Window Cut-Out

ASSEMBLY STEP 2

Fasten the Rail to the Motor Unit

1.Insert a 1/4"-20xl-3/4" bolt into the cover protection bolt hole on the back end of the rail as shown. Tighten securely with a 1/4"-20 lock nut. DO NOTovertighten.

2.Removethe two bolts from the top of the motor unit.

3.Placethe "U" bracket,flat side down, on the motor unit and align the bracket holes with the bolt holes. Fastenwith the previously removed bolts.

4.Align the rail assemblywith the top of the motor unit. Slide the rail end onto the "U" bracket, all the way to the stops that protrude on the top and sides of the bracket.

HARDWARESHOWN ACTUALSIZE

	Lock Nut
Bolt 1/4"-20xl-3/4"	1/4"-20

To avoid SERIOUSdamage to garagedoor opener, use ONLY those bolts/fasteners mounted in the top of the opener.

Bolts

I

"U" Bracket

Bolt

I

Cover

Protection

Bolt Hole _

I	SLIDE RAIL TOSTOPS
I
	ON TOP AND SIDES
	OFBRACKET
Lock Nut i