Craftsman 139.53785 Manuel utilisateur

CRRFTSHRN®

OWNER'S INSTRUCTIONS Model 139.53785

Ten-Foot Rail Extension Kit

Close door end disconnect power to the garage

The tro#ey must be /n down (closed door) posit/on

during asmanibly and Installation. If you have a

completely installed garage door opener, the rail/opener

assembly must be taken down. UP and DOWN Umlte

mustbe readjusted after installation.

Opener hanging brackets will require reposltioningdue to

increased rail length.

ff thl$ Is a new Inatallatlon, replace the front(header)

rail in your opener carton withthe longerone in this kit.

Add the center rail in this Idtas the second or third rail,

creating a four rail assembly. Use the belt assembly and

longer emergency release rope in this kit in place ofthose

packaged with your opener. Complete the assembly,

Installation, and adjustment of your opener according to

yourOwner's Manual.

ff thl# Is an existing InatMlatlon, oontinue _follows:

1. Pull down on the emergency release handle, then

disconnectthe trolley from the door arm.

2. Disconnectthe rail/opener assembly from the header

bracket and hanging brackets, and place iton the

floor.

3. Remove the bell cap retainer from the opener

sprocket and set aside.

4. Disconnectthe master link from the trolley threaded

shaft and belt; discard.

5. Remove the spring/nut from the trolley and dlscerd,

6. Remove idler pulley assembly and set aside.

7. Remove the hall assembly and discard.

8. Remove the 1/4"-20xl-3/4 bolt and lock nutfrom the

trolley stop hole (see Figure 1) inthe front railand set

aside.

9. Push the trolley beck toward the opener head.

Disconnect the frontrail section by using a

screwdriver tip to pry up the outer tab on each side of

the rail, then slide itoffthe center rail Discard the

front rail

10. Alignthe new frontrailand center railswith the

existingrailassembly, keeping the small holes along

the same edge, and the cut out =window" at the front

(header) end. Be sure to keep rails rightside up: the

idlerpu/ley bolthole above the windowls larger on top

of the ra#than on the bottom. SIIde the new nentsr rel!

ontothe assembly; then add the front rail.Tabs along

the side will lock intoplace.

11. As a temporary trolley stop,clamp a locking pliers

ontothe rail, 8" from the center of the idler pulley

hole, as shown in Figure2. Slide the trolleyassembly

to this point

12. Lay the new bell beside the rail as shown in Rgurs 3.

Grasp the end with the hooked trolleyconnectorand

Figure 2

RAIL

lookingPlkn 8"from

Id_r

Hole

Cut-Out

F/gure 3

3/8"Lock Trolley Idler

Connector Pulley

passapproximately 12" ofbelt through the window,

keeping the dbbed side towardthe rail. Allow itto

hangwhile you complete the next two steps.

13. Replace the idler pulley, lockwasher and nut. Rotate

itto be sure it spinsfreely. Grease the center if

necessary.

14.Replace the the 1/4"-20xl-3/4 belt and lock nut into

the trolley stop hole.

15. Pull the belt around th_ Idler pulley and hook the

trolley connector intothe retaining slot on the trolley

as shown in Figure 4. The fibbed side must contact

tbepu/_y.

16. With the trolley against the pliem, dispense the

remainder of the belt along the rail assembly toward

the powerhead and around the sprocket. The

sprocket teeth must engage the belt.

17. Check to make sure the boltis not twisted, then

connect it to the fiat end of the trolley threaded shaft

with the master |ink, as shown:

•Push pins of master link bar through holes in end

o1bert and trolley threaded shaft.

• Push master link cap over pins and past pin

notches.

• SUde dip-on epring over cap and onto pin notches

unti| both pins are securely locked in place.

18. Insert the trolley threaded shaft through the hole in

the trolley. Be sure the belt is not twistS, and the

fibbed side faces the rail

19. Hold the bert at the trolley sh_ft as you three,d the

spring nut by hand (Figure 5) onto the shaft until

finger tight against the trolley. Do not use any tools.

20. Remove the Iocldngpliers.

21. Set the belt tension:

• Insertascrewdrivertip intoone o_the nut ringslots

andtxe e ¢rr yag nstthetroney,as

• Place a7/16' opefl end wreflch no the square end.

Rotate the nutebout 1/4 turnuntUthe spdng raieases

and sneps the out ringagolnst ti_etrolley,Rgure 6.

ThissetsmespringtoopSrnumbe|ttensinn.

22. Replace the belt cap retainer and complete the re-

installation and adjustment of your opener accon:ling

to your owner's manual.

23. Replace the old emergency release rope with the

new, longer replacament rope.

24. Reconnect power and operate the door in the UP

direction.

25. Increase the UP travel limit by turning the UP limit

adjustrnent screw in a olockwtse direc_on as shown

on label. One turn equals 2" of travel

IdlelPulhby

Hole

•e_Jm S

Slot

End

Trolley

_._ER RELEASI_

1-1)4"

partNo. Oe_rlpUen

183C158-11 ..... Header tail extension ........ 1

183C157-8 ...... Center rail extension ........ 1

1A5250-2 ....... 10' Belt Assembly ........... 1

26A53 ......... Rope ..................... 1

1A995 ......... Master Unk Kit ............. 1

1A5019 ........ Spring Nut Assembly ........ 1

01999,Sear=,Roebuck&Co.

/dlRightsI=k_m_d114A2407 PdntedinMexico

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