Manuals / Craftsman / Household Appliance / Garage Door Opener

Craftsman 139.53645SRT3, 139.53834SRT3 Installation Step, Attach the T-rail to the Header Bracket

Models: 139.53648SRT2 139.53645SRT3 139.53834SRT3 139.53335SRT3 139.53646SRT2 139.53660SRT1

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Installation Step 3

Attach the T-rail to the Header Bracket

Heade_

Brackel

Cable

Bracket

Door

•Position the opener on the garage floor below the header bracket. Use packing material as a protective base.

If the door spring is in the way you'll need help.

Have someone hold the opener securely on a temporary support to allow the T-rail to clear the spring.

•Position the cable pulley bracket against the header bracket.

•Align the bracket holes and join with a clevis pin as shown.

•Insert a ring fastener to secure.

Ring Fastener

Header Bracket

Clevis Pin

5/16"x2-3/4 ' Cable

Pulley

Bracket

Temporary

--Support

Hardware Shown Actual Size	©
o]	©
Clevis Pin
5/16" x 2 3/4'	Ring Fastener

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Craftsman 139.53645SRT3, 139.53834SRT3, 139.53646SRT2 owner manual Installation Step, Attach the T-rail to the Header Bracket

Contents

Craftsman Start by reviewing these important safety alert symbols YoullNeed Tools Closed Position Sectional Door InstallationONE-PIECE Door Installation One-PieceDoor Without Track TO your InstallationOne-Piece Door With Track Carton Inventory Wit w edT oInstallation Hardware Safety Reversing Sensor InstallationHardware Hardware Shown Actual Size Assembly Section Pages 8Assemble the T-rail & Attach Cable Pulley Bracket Operation,noiseand/or RightWrongFasten Raft to Opener Install the Trolley on the T-railHardware Shown Actual SizeAssembly Step Install the Chain/Cable Attach the Sprocket CoverMasterFigure Tighten the Chain & Cable Trolley before adjusting chainAbovethedoor IF1 --L--JiIll One-piece door without track Pivot hardware One-piece door without track Jamb hardwareInstall the Header Bracket Fasten the Header Bracket to the WallFasten the Header Bracket to the Ceiling Attach the T-rail to the Header Bracket Sectional Door & ONE-PIECE Door with Track Position the OpenerHang the Opener L!LIIllllllllltllllllllllll Install the Door ControlDo not connect to live electrical wiring. Connect Door Control Button Fasten securely with 6ABx1-1/2 screwsInstall the Light and the Lens 32 explains how to use the door controlAttach the Emergency Release Rope and Handle Permanent Wiring Connections Electrical RequirementsRightWrong Facing the door from inside the garage Safety Reversing SystemAlternate Wall Mount Install the Safety Reversing SensorRight sides of the door Finger tighten the lock nuts Shown Actual SizeTrouble Shooting Fasten Door Bracket IIIIIII!!11111!111II!!l!ll!!!lLllllllllllllllI!l!l!l Alternative Connect Door Arm to TrolleySEC!ONA DoorS Oniy Hole AlignmentAssemble the Door Arm Adjustment Procedures for One-PieceDoorsOpen Door Adjustment Decrease UP limit Closed Door Adjustment Decrease Down limitPages 28 Adjustment Section Adjustment StepTo Adjust the Limits Adjust the UP and Down LimitsTest the Down close force Adjust the ForceHow and When to Adjust the ForcesMust reverse on striking the obstruction Adjustment StepTest The Safety Reversing Sensor Test the Safety Reverse SystemSchedule MaintenanceTo reduce the risk of severe injury or death to persons Care of Your OpenerLockout position Operation of Your Opener53000SRT Series Garage Door Openers Receiver and Remote Control ProgrammingHaving a Problem? Probable Cause and SolutionSituation Probable Cause & Solution Having a Problem?Installation Parts Repair PartsWie \Fr Opener Assembly PartsAccessories Index Product Type Part Number Model Number Part Description For the repair or replacement parts you needFor in-home major brand repair service Give the following information