Craftsman 139.53637SRT1 Owner's Manual download pdf (Page 8)

Assembly Section: Pages 8 - 11

To avoid Installation difficulties, do not mn 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 flat 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

and pass through the round holes in T-rail center

section. Assemble lock nuts, ensure alignment and

tighten.

Make sure bolt necks are

seated Inthe square

holes and rails are

aligned beforeyou

tightenlock nuts. (See

rightand wrong views).

Improperassemblycan

cause Jerkytrolley

operation,noise and/or

nuisancedoor reversals.

Right Wrong

TRAIL BACK

(TOOPENER)

T-r_l

1/4"LockNut (End Sedon)

If T-roll is not assembled

EXACTLY as shown, trolley

will not travel smoothly

along length of rail or If will

hit against the nuts.

Brace

eB_t

1/4"-20_1/2"

CableputkDybracket

attach_ to FRONT

END of T-raU

T-RAILFRONT

(To DOOR)

• Position the cable pulley bracket onthe front end of

T-rail as shown. Fasten securely with the hardware.

Ca_e pulley

Bracket

Hardware Shown Actual Size

Lod_Nut CardegeBolts

1/4" - 20 x 7/16" 1/4" * 20 x 1/2"

When Ifghtening

Q the screws, be

sure to keep

bracket parallel

to the rail.

Otherwise,the

rail may bow

when opener Is

Right Wrong operated.

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Craftsman 139.53637SRT1 Owner's Manual Page 8

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