Craftsman 139.18687, 139.18987 Owner's Manual

1/2 HP

GARAGE DOOR OPENER

For Residential Use Only
Model Nos:

139.18687 • 139.18987

®

■ Safety Precautions

■ Assembly

■ Installation

■ Adjustment

■ Maintenance

■ Operation

■ Troubleshooting

■ Parts List

Sears Canada, Inc., Toronto, Ontario M5B 2B8

Visit our Craftsman website: www.sears.com/craftsman

CAUTION:
Read and follow all safety rules
and operating instructions
before first use of this product.

Fasten the manual near the
garage door after installation.

Owner’s Manual

MD

Start by Reviewing these Important Safety Alert Symbols

2

Contents Page

A review of safety alert symbols.................................2

You'll need tools..........................................................3

Safety information regarding garage door

locks and ropes.........................................................3

Testing your garage door for sticking,

binding and balance..................................................3

Illustration of sectional door installation .....................4

Illustration of one-piece door installation....................5

Carton inventory..........................................................6

Hardware inventory.....................................................7

Assembly section - pages 8 – 11

Assemble rail & install trolley....................................8

Fasten rail to opener.................................................9

Install idler pulley.......................................................9

Install belt & attach belt cap retainer......................10

Set the belt tension.................................................11

Installation section - pages 11 – 27

Installation safety instructions.................................11

Determine header bracket location

Sectional door......................................................12

One-piece door....................................................13

Install the header bracket.......................................14

Attach the rail to header bracket ............................15

Position the opener.................................................16

Hang the opener.....................................................17

Install the door control ............................................18

Contents Page

Install the lights and lenses......................................19

Attach emergency release rope and handle ...........19

Electrical requirements.............................................20

Safety reversing sensor information........................21

Install the safety reversing sensor.....................22, 23

Fasten door bracket (sectional door).......................24

Fasten door bracket (one-piece door).....................25

Connect door arm to trolley (sectional door) ...........26

Connect door arm to trolley (one-piece door)..........27

Adjustment section - pages 28 – 30

Travel limit adjustments ...........................................28

Force adjustments....................................................29

Test the safety reversing sensor..............................30

Test the safety reverse system ...............................30

Operation safety instructions .....................................31

Care of your opener ...................................................31

Maintenance schedule...............................................31

Operation of your opener...........................................32

Receiver and remote control programming...............33

Having a problem?...............................................34, 35

Repair parts, rail assembly.........................................36

Repair parts, installation.............................................36

Repair parts, opener assembly..................................37

Accessories................................................................38

Index...........................................................................39

How to order parts and service..................................40

Warranty.....................................................................40

When you see these Safety Symbols on the following pages, they will alert you to the possibility of

serious injury or death

if you do not comply with the corresponding instructions. The hazard may

come from something mechanical or from electric shock.

Read the instructions carefully.

When you see this Safety Symbol on the following pages, it will alert you to the possibility of damage
to your garage door and/or the garage door opener if you do not comply with the corresponding
instructions.

Read the instructions carefully.

This garage door opener is designed and tested to offer safe service provided it is installed, operated,
maintained and tested in strict accordance with the safety instructions contained in this manual.

Mechanical Electrical

WARNING

WARNING

CAUTIONCAUTION

You'll Need Tools

During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.

3

SECTIONAL DOOR

ONE-PIECE DOOR

An unbalanced garage door might not reverse
when required and someone under the door
could be seriously injured or killed.

If your garage door binds, sticks or is out of
balance, call for professional garage door
service.

Garage doors, door springs, cables,
pulleys, brackets and their hardware are under
extreme tension and can cause serious injury
or death.

Do not try to loosen, move or adjust

them yourself!

Ropes left on a garage door could cause
someone to become entangled and killed.

Remove all ropes connected to the door before
installing and operating the opener.

To avoid damage to the garage door and
opener, disable locks before installing and
operating the opener. Use a wood screw or nail
to hold locks in the "open" (unlocked) position.

Operation at other than 120V 60 Hz will cause
opener malfunction and damage.

Identify the type and height of your door and any
special conditions that exist and any additional
materials that may be required by referring to the lists
on page 4 or page 5.

Before you begin, complete the following test to
make sure your door is balanced, and is not
sticking or binding:

• Lift the door about halfway as shown. Release the
door. It should stay in place, supported entirely by
its springs.

• Raise and lower the door to see if there is any
binding or sticking.

Stepladder

Carpenter's

Level

Drill

1/2", 7/16" and 1/4" Sockets

1

Tape Measure

3/16", 5/16" and

and Wrench

WARNING

2

5/32" Drill Bits

Pencil

Hack Saw

Wire Cutters

Claw Hammer

Pliers

Screwdriver

Adjustable End WrenchLocking pliers

CAUTIONCAUTION

4

Before you begin, survey your garage area to
see whether any of the conditions below apply
to your installation.

Based on your particular requirements, there are
several installation steps which might call for
materials and/or hardware not included in the carton.

• Step 1, page 12 - Look at the wall or ceiling above
the garage door. The header bracket

must

be

securely fastened to structural supports.

• Step 5, page 17 - Do you have a finished ceiling in
your garage? If so, a support bracket and
additional fastening hardware may be required.

• Safety reversing sensor, page 21 - Depending
upon garage construction, wood blocks or
extension brackets (see Accessories page 38)
may be needed to fasten sensors to mounting
locations.

• Step 10, page 22 - Floor mounting of the safety
reversing sensor will require hardware not
provided.

• Step 11, page 24 - Do you have a steel, aluminum,
fiberglass or glass panel door? If so, horizontal
and vertical reinforcement is required.

• Look at the garage door where it meets the floor.

It must close on the floor all the way across.
Otherwise, the safety reverse system may not
work properly. See page 30. Floor or door should

be repaired.

• An 8 foot high door will require Item No. 18768
Rail Extension Kit. A 10 foot high door will require
Item No. 18770 Rail Extension Kit.

SECTIONAL Door Installation

• The opener can be installed within 4 feet to the left
or right of the door center if there is a torsion spring
or center bearing plate in the way of the header
bracket or door bracket area.

If your door has
extension springs, the opener must be installed in
the center of the door.

See pages 12 and 24.

• Do you have an access door in addition to the
garage door? If not, Model 18752 Emergency Key
Release is required. See page 38.

Y ou may find it helpful to refer back to this page as
you proceed with the installation of your opener.

Horizontal and vertical reinforcement

is needed for lightweight garage doors

(fiberglass, steel, aluminum, door

with glass panels, etc.).
See page 24 for details.

Header Wall

— — — — — — — —

Door

Center

Extension

Spring

OR

Torsion

Spring

Access Door

FINISHED CEILING

Support bracket &

fastening hardware

is required.

See page 17.

Floor must be level

Safety Reversing Sensor

across width of door.

Safety

Reversing

Sensor

Closed Position

Trolley

Straight

Door

Arm

Curved

Door

Arm

Belt

Emergency Release

Rope & Handle

Header

Wall

Garage

Door

Header
Bracket

Garage

Door

Spring

Trolley

Stop Bolt

Door

Bracket

5

Before you begin, survey your garage area to
see whether any of the conditions below apply
to your installation.

Based on your particular requirements, there are
several installation steps which might call for
materials and/or hardware not included in the carton.

• Step 1, page 13 - Look at the wall or ceiling above
the garage door. The header bracket

must

be

securely fastened to structural supports.

• Step 5, page 17 - Do you have a finished ceiling in
your garage? If so, a support bracket and
additional fastening hardware (not provided) may
be required.

• Safety reversing sensor, page 21 - Depending on
garage construction, wood blocks or extension
brackets (see Accessories page 38) may be
needed to fasten sensors to mounting locations.

• Step 10, page 22 - Floor mounting of the safety
reversing sensor will require hardware that is not
provided.

• Step 11, page 25 - Generally, a one-piece door
does not require reinforcement. If your door is
lightweight, you can refer to the information
relating to sectional doors on page 24.

• Step 11, page 25 - Depending on your door's
construction, you might need additional mounting
hardware for the door bracket.

• Do you have an access door in addition to the
garage door? If not, Model 18752 Emergency Key
Release is required. See page 38.

• The gap between the bottom of the garage

door and the floor cannot exceed 1/4".
Otherwise, the safety reverse system may not
work properly. See page 30. The floor or the door

should be repaired.

ONE-PIECE Door Installation

You may find it helpful to refer back to this page
as you proceed with the installation of your
opener.

One-Piece Door without Track

One-Piece Door with Track

Header

Wall

Safety

Reversing

Safety

Reversing Sensor

Gap between floor and bottom

of door must not exceed 1/4".

Sensor

Access Door

FINISHED CEILING

Support bracket

& fastening

hardware is required.

See page 17.

Closed Position

Header

Wall

Trolley Stop Bolt

Header
Bracket

Door Bracket

Garage

Door

Rail

Straight

Door

Arm

Belt

Curved

Trolley

Emergency

Release

Rope & Handle

Door

Arm

Access

Door

Safety

Reversing

Sensor

Reversing

Sensor

Floor must be level

across width of doorSafety

Closed Position

Header

Wall

Trolley Stop Bolt

Header
Bracket

Door

Bracket

Garage Door

Belt

Curved

Door Arm

Straight

Door Arm

Trolley

Rail

Emergency

Release

Rope &
Handle

6

Carton Inventory

Your garage door opener is packaged in two cartons which contain all parts illustrated below. If anything is
missing, carefully check the packing material. Parts may be "stuck" in the foam. Hardware for assembly and
installation is shown on page 7.

LIGHT

LOCK

Premium Control Console

SECURITY✚

Three-Function Remote Control

with Visor Clip (2)

Belt Cap

Light Lens (2)

Trolley

Belt

Idler Pulley

Rail

Front (header)

Section

Belt

Rail

Center/Back

Sections

U Bracket

Hanging Brackets

Door Bracket

Curved Door

Arm Section

Header Bracket

2-Conductor Bell Wire

White & White/Red

Safety Sensor

Bracket (2)

(2) Safety Reversing Sensors

(1 Sending Eye and 1 Receiving Eye)

with

2-Conductor White & White/Black Bell Wire

attached

Safety Labels

and

Literature

Straight Door

Arm Section

7

Separate all hardware from the packages in the rail carton and the opener carton, as
shown below, for the assembly and installation procedures.

ASSEMBLY

Hex Screw

8x3/8" (2)

Bolt 1/4"-20 x 1-3/4 (2)

INSTALLATION

Hex Screw

5/16"-18x7/8" (4)

Lag Screw

5/16"-9x1-5/8" (2)

Lock Nut

1/4"-20 x 7/16 (12)

Trolley Threaded Shaft (1)

Hex Screw

1/4" - 20 x 5/8" (4)

Lock Washer

3/8" (1)

Spacer (2)

Belt Spreader (2)

Carriage Bolt

5/16"-18x2-1/2" (2)

Nut

3/8" (1)

Spring/Trolley Nut (1)

Nut

5/16"-18 (4)

Master

Link (2)

Lock Washer

5/16" (7)

NOTICE

Handle

Idler Bolt (1)

Rope

Lag Screw

5/16"-18x1-7/8" (2)

Clevis Pin

5/16"x1-1/2" (1)

SAFETY REVERSING SENSOR

Carriage Bolt

1/4"-20x1/2" (2)

Wing Nut (2)

Screw

6ABx1-1/4" (2)

Clevis Pin

5/16"x1-1/4" (1)

Insulated

Staples (20)

Screw

6-32x1" (2)

Clevis Pin

5/16"x1" (1)

Dry Wall

Anchors (2)

Ring

Fastener (3)

Insulated

Staples (10)

8

Assembly Step 1

Assemble the Rail & Install the Trolley

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

Assembly Section: Pages 8 – 1 1

Front Rail

(TO DOOR)

Window
Cut-Out

Locking Pliers

Idler

Pulley

Hole

8" Distance from
Idler Pulley Hole

Tabs

Back Rails

(TO

POWERHEAD)

Trolley

Tapered

End

Tapered

End

Inner Trolley

Wear Pads

Outer Trolley

The front rail has a cut out “window” at the door end
(see illustration). The hole above this window is
larger on the top of the rail than on the bottom. A
smaller hole 3-1/2" away is close to the rail edge.
Rotate the back rail so it has a similar hole close to
the opposite edge, about 4-3/4" from the far end. A
3-piece rail uses two back rails.

1. Remove the straight door arm and clevis pin

packaged inside the front rail and set aside for
Installation Step 12.

2. Align the rail sections on a flat surface exactly as

shown and slide the tapered ends into the larger
ones. Tabs along the side will lock into place.

3. Place the powerhead 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.

4. As a temporary trolley stop, clamp a locking pliers
onto the rail, 8" from the center of the idler pulley
hole, as shown.

5. Check to be sure there are 4 black plastic wear
pads inside the inner trolley. If they became loose
during shipping, check all packing material. Snap
them back into position as shown.

6. Connect the inner and outer trolleys as shown.

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

KEEP SMALL HOLES

ALONG OPPOSITE EDGE

OF RAILS

KEEP LARGER

HOLE ON TOP

FRONT RAIL

(TOP)

BACK RAIL

(TOP)

Assembly Step 2

Fasten the Rail to the Opener

9

Assembly Step 3

Install the Idler Pulley

To fasten rail, use only those screws mounted
in the top of the opener. Any other screws will
cause serious damage to the opener.

Hardware Shown Actual Size

• Insert a 1/4"-20x1-3/4 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.

• Remove the two screws from the top of the
opener.

• Place the U bracket, flat side down, on the opener
and align the bracket holes with the screw holes.
Fasten with the previously removed screws.

• Attach spreaders to the U bracket by snapping
them into place.

• Align the rail assembly with the top of the opener.
Slide the rail end onto the U-bracket,

all the way
to the stops that protrude on the top and sides of
the bracket.

Hardware Shown Actual Size

• Lay the belt beside the rail, as shown. Grasp the
end with the hooked trolley connector and pass
approximately 12" of belt through the window.
Keep the ribbed side toward the rail, and allow it
to hang until Assembly Step 5.

• Remove the tape from the idler pulley. The inside
center should be pre-greased. If dry, regrease to
ensure proper operation.

• Place the idler pulley into the window as shown.

• Insert the idler bolt from the top through the rail
and pulley. Tighten with a 3/8" lock washer and
nut underneath the rail until the lock washer is
compressed.

• Rotate the pulley to be sure it spins freely.

• Insert a 1/4"-20x1-3/4 bolt into the trolley stop
hole in the front of the rail as shown. Tighten
securely with a 1/4"-20 lock nut.

CAUTIONCAUTION

Screws

Belt

Spreader

"U" Bracket

Bolt

Cover

Protection

Bolt Hole

SLIDE RAIL TO STOPS

ON TOP AND SIDES

OF BRACKET

Lock Nut

Hook Legs

Into Back Slots,

then Snap Front

Tab into Slot

Bolt 1/4"-20 x 1-3/4

Lock Nut

1/4"-20

Idler

Bolt

3/8" Lock

Washer

Locking Pliers

Trolley

Stop Hole

3/8" Nut

Pulley

Nut

Grease

Inside Pulley

Idler Pulley

Trolley

Connector

Bolt

Washer

Rail

Stop Hole

Trolley

Idler

Pulley

Bolt

Idler Bolt

Bolt 1/4"-20 x 1-3/4

Lock Nut 1/4"-20

Nut 3/8"

Lock Washer 3/8"

1. Pull the belt around the idler pulley and toward
the trolley.

The ribbed side must contact the

pulley.

2. Hook the trolley connector into the retaining slot
on the trolley as shown.

3. With the trolley against the pliers, dispense the
remainder of the belt along the rail length toward
the powerhead and around the sprocket. The
sprocket teeth must engage the belt.

4. Check to make sure the belt is not twisted, then
connect it to the flat end of the trolley threaded
shaft with the master link, as illustrated:

• Push pins of master link bar through holes in

end of belt and trolley threaded shaft.

• Push master link cap over pins and past pin

notches.

• Slide clip-on spring over cap and onto pin

notches until both pins are securely locked in
place.

Assembly Step 4

Install the Belt & Attach the
Belt Cap Retainer

10

Serious injury can result if fingers become
entangled in moving opener sprocket. Attach
belt cap retainer securely. Never operate opener
while your hand is near the opener sprocket.

5. Insert the trolley threaded shaft through the hole in
the trolley.

Be sure the belt is not twisted, and the

ribbed side faces the rail.

6. Hold the belt at the trolley shaft as you thread the
spring nut by hand onto the shaft until finger tight
against the trolley.

Do not use any tools.

7. Remove the locking pliers.

8. Position the belt cap retainer over the opener
sprocket as shown and fasten to the mounting
plate with 8x3/8" hex screws provided.

WARNING

Hardware Shown Actual Size

Hex Screw 8x3/8"

Spring/Trolley Nut

Idler Pulley

Spring Nut

Master Link

Clip-On Spring

Master Link Cap

Retaining

Trolley

Connector

Slot

Threaded

Round

Hole

Belt Cap
Retainer

Trolley

Shaft

Pin

Notch

Master

Link Bar

Hex Screws

#8x3/8"

Opener

Sprocket

Mounting

Plate

IMPORTANT INSTALLA TION INSTRUCTIONS

To reduce the risk of severe injury or death to persons:

1. READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS.

2. Install only on a properly balanced and lubricated garage door.

An improperly balanced door

may not reverse and could result in severe injury or death.

Repairs to cables, spring assemblies

and other hardware must be made by a professional service person before installing opener.

3. Disable all locks and remove all ropes connected to the garage door before installing the opener.

Ropes connected to a garage door can cause entanglement and death.

4. If possible, install door opener 7 feet or more above floor with the emergency release handle
mounted 6 feet above the floor.

5. Do not connect the opener to power source until instructed to do so.

6. Locate the Door Control within sight of the door at a minimum height of 5 feet where small
children cannot reach, and away from all moving parts of the door.

7. Install the User Safety Instruction Label on the wall adjacent to the door control and the
Maintenance Instruction Label in a prominent location on the inside of the garage door.

8. Upon completion of the installation, the door must reverse when it comes in contact with a
one-inch high object or a 2x4 laid flat on the floor.

9. Do not wear watches, rings or loose clothing while installing or servicing an opener. Jewelry or
loose clothing can be caught in the mechanism of the garage door or the opener.

11

You have now finished assembling your garage door opener. Please read the following
warnings before proceeding with installation.

• Insert a screwdriver tip into one of the nut ring
slots and brace it firmly against the trolley.

• Place a 7/16" open end wrench on the square
end. Rotate the nut about 1/4 turn until the spring
releases and snaps the nut ring against the
trolley.

This sets the spring to optimum belt tension.

Assembly Step 5

Set the Tension

Nut Ring Slot

Square End

Nut Ring

Trolley

Nut Ring

Square

End

BEFORE AFTER RELEASE

1" 1-1/4"

WARNING

WARNING

• Open your door to the highest
point of travel as shown. Draw
an intersecting horizontal line
on the header wall 2" above
the high point. This height will
provide travel clearance for the
top edge of the door.

Door clearance brackets are
available for sectional doors
when headroom clearance is
less than 2". See accessory
page 38.

12

Proceed to Step 2, page 14.

Vertical

Guideline

Finished

Ceiling

Vertical

Guideline

Header

Wall

2x4

Structural

Supports

SECTIONAL Door and

ONE-PIECE Door With Track

• Close the door and mark the inside
vertical centerline of the garage door.

• Extend the line onto the header wall
above the door.

Remember, you can fasten the header
bracket within 4 feet of the left or right
of the door center

only

if a torsion
spring or center bearing plate is in the
way; or you can attach it to the ceiling
(refer to page 14) when clearance is
minimal. (It may be mounted on the
wall upside down if necessary, to gain
approximately 1/2".)

If you need to install the header bracket
on a 2x4 (on wall or ceiling), use lag
screws (not provided) to securely fasten
the 2x4 to structural supports as shown
here and on page 13.

Installation Section: Pages 12 – 27

Sectional door

with curved track

One-piece door

with horizontal track

Installation Step 1

Determine Header Bracket Location

Installation procedures vary according to
garage door types. Follow the instructions
which apply to your door.

If the header bracket is not rigidly fastened to
a structural support on the header wall or
ceiling, the safety reverse system may not
work properly (see page 30).

The door might
not reverse when required, and could cause
serious injury or death.

The garage door springs, cables, pulleys,
brackets and their hardware are under extreme
tension.

Do not attempt to loosen, move or
adjust them yourself. Serious personal injury
or death could result.

Call for professional

garage door service.

WARNING

Door

Ceiling

Header

Wall

2"

Highest Point

of Travel

Track

Header

Wall

2"

Highest Point

of Travel

Door

Track