Craftsman 139.53671SRT1, 139.53677SRT1 Assembly Section Pages 8, Assembly Step, omenlo Sas

Assembly Section: Pages 8- 11

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

Assembly Step I

Assemble the T.rail & Attach

the Cable Pulley Bracket

• Align the 3 T-rail sections on a fiat surface exactly

as shown. The end'sections are identical. Make

sure the "arrow label" on the center section is

pointing toward the door.

• Insert the carriage bolts so the square bolt necks

seat in the square holes in the T-rail end sections

Make sure bolt necks are
seated In the square	_
holes end rails are	_
aligned beforeyou	_	_
	•	• I
.omenlo (Sas __
i right and wrong views). '_k		J

iImproper assembly can _

cause ]edo/trolley

operation,noise and/or Right nuisancedoor reversals.

_k A_P'-"-"-'_I'--_

.t• /	•
'_
Wrong
TRAIL BACK
(TO OPENER)

end pass through the round holes in T-rail center

section. Assemble lock nuts, ensure alignment and

tighten.

1/4" LockNut

T.rail

(End Sec_on)

Brace

If T-rail is not assembled
EXACTLY as shown, trolley	I
will not travel smoothly	]
along length of rail or it will
hit against the nuts.	I	Brace

T-raU

Hardware Shown Actual Size

Cab_p._/brackst©

attachestoFRONT

ENDofT-ralSquareCarthage

B_t Hole=

	LodNut	CardageSob
	114"* 20 x 7116"	1/4" -20x 1/2"
(TOsoon)
• Positionthe cable pufley bracket on the front end of the . •	Hex Scrow	Nut	L_:k W_ner
	5/16"- 18 x 7/8"	5/16" - 18	5/16"
T-r_q as shown. Fasten sscurely with _e hardware.

cab*,Pamy			sure to keep
Brad_			bracket parallel
			to the mllo
		Q	hen tightening
			Otherwlas, the
			the scraws, be
			rail may bow
			when opener is
s	Right	Wrong	operated.
L=_ Wuhw
5/16"

8