DORMAN 742-271 Power Window Motor Installation Guide

DORMAN 742-271 Power Window Motor

Product Information

Specifications:

• Product Code: 742-271
• Product Name: Window Lift Motor
• Tools Required: Refer to the appropriate shop manual for specific tools needed
• Safety Gear: Safety glasses are mandatory

Product Usage Instructions

Removal Instructions:

1. STEP 1: Remove the interior door trim panel attaching screws.
2. STEP 2: Use a trim panel removal tool to detach the interior door trim panel.
3. STEP 3: Disconnect the master switch assembly and electronic trunk switch (if applicable).
4. STEP 4: Remove the door speaker.
5. STEP 4a: Disconnect the door speaker.
6. STEP 5: Take off the water vapour barrier by carefully trimming around the interior door trim panel support.
7. STEP 6: Temporarily connect the master switch assembly and lower the window regulator to access the glass mounts.
8. STEP 6a: Slide the door glass into the closed position and secure it using a saddle cup assembly, tape, or wedge.

Frequently Asked Questions (FAQ)

• Q: Do I need special tools for the installation?
  A: Yes, please refer to the appropriate shop manual for your vehicle for specific tools required.

• Q: Can I install the window lift motor myself?
  A: If you lack the necessary skills, it is recommended to seek the services of a qualified technician to avoid any damage or incorrect installation.

• Q: What precautions should I take during installation?
  A: Pay special attention to all cautions and warnings in the shop manual, and read and follow all instructions carefully to ensure proper installation and avoid any safety hazards.

ATTENTION: Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part. If you do not have a service manual or lack the skill to install this part, it is recommended that you seek the services of a qualifi ed technician. Pay special attention to all cautions and warnings included in the shop manual. Read and follow all instructions carefully.

General Tech Tips

• Use painter’s tape rather than duct tape to secure the window. It will not damage paint or leave a sticky residue.
• A plastic pry tool is useful. It will not easily damage delicate trim like a screwdriver or metal pry bar.
• The replacement regulator should have a liberal amount of grease on the slide area. If there is not much grease present, white lithium grease works well to lubricate the slide area.
• Aftermarket window tinting can cause the window to travel slower and put additional strain on the window regulator assembly.
• Window run channels should be cleaned and lubricated before the installation of a new window regulator assembly. Silicone spray works well.

Tools required

Tools required for removal and installation of window regulator and motor assembly:

• Silicone spray lubricant
• Trim panel removal tool
• Pick
• Saddle cup assembly, tape or wedge to hold window in place
• Flat-blade screwdriver or plastic pry tool
• 10 mm socket or driver
• Phillips screwdriver
• Grease pencil or marker
• Razor blade or sharp knife
• 3/8” drill bit, power drill, 1/8” drill bit
• 1/4 x 20 x 1” bolts and 1/4” x 20 nylon lock nuts (optional)

Disclaimer:
Even though every attempt is made to ensure this information is complete and accurate, it is impossible to account for all possible circumstances or situations. Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do. Automobiles can be hazardous to work on; be sure to take all necessary safety precautions. Failure to do so may result in property damage or personal injury. Certain motor vehicle standards and performance requirements may apply to your motor vehicle (such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration). Be sure that your work is performed by such standards and that you do not disable any motor vehicle safety features.

ATTENTION: Refer to the appropriate shop manual for your vehicle to obtain specific service procedures for this part. If you do not have a service manual or lack the skill to install this part, it is recommended that you seek the services of a qualified technician. Pay special attention to all cautions and warnings included in the shop manual. Read and follow all instructions carefully.

Removal Instructions

• STEP 1: Remove the interior door trim panel attaching screws.

• STEP 2: Using a trim panel removal tool, remove the interior door trim panel from the door.

• STEP 3: Disconnect the master switch assembly and the electronic trunk switch.
  NOTE: Not all vehicles were equipped with this option.

• STEP 4: Remove the door speaker.

  • STEP 4a: Disconnect the door speaker.

• STEP 5: Remove the water vapor barrier.
  NOTE: Use a razor blade or a sharp knife to trim out around the interior door trim panel support.

• STEP 6: Temporarily connect the master switch assembly and lower the window regulator, exposing the window regulator to glass mounts.

  • STEP 6a: Once the door glass has been disconnected from the window regulator, slide the door glass into the closed position and hold in place using either saddle cup assembly, tape, or wedge.

• STEP 7: Using a drill and a 3/8” drill bit remove the rivet heads attaching the window regulator to the door.
  NOTE: DO NOT DRILL THROUGH THE DOOR. YOU ARE ONLY REMOVING ENOUGH MATERIAL TO TAKE THE HEAD OF THE RIVET OFF. ONCE THE RIVET HEAD IS REMOVED, USE A 1/8” BIT TO DRILL OUT THE CENTER OF THE RIVET.

• STEP 8: Remove the nuts attaching the bottom of the scissor rail to the door.

• STEP 9: Disconnect the window lift motor.

• STEP 10: Remove the window regulator assembly through the access hole.

• STEP 11: Remove the three (3) screws attaching the window lift motor to the window regulator.
  NOTE: Some vehicles were equipped with a tensioner spring on the window regulator. Take care in removing the window lift motor from the window regulator. Failure to do so could result in injury.

Installation Instructions

• STEP 1: Attach the window lift motor with the three (3) window lift motor attaching screws.

• STEP 2: Place the window regulator assembly through the access hole in the door.

• STEP 3: Attach the window regulator to the door.
  NOTE: IF YOU DO NOT HAVE ACCESS TO AN EXTRA LARGE POP RIVET TOOL YOU CAN USE 1/4” x 20 x 1” BOLTS AND 1/4” x 20 NYLON LOCK NUTS TO ATTACH THE WINDOW REGULATOR ASSEMBLY TO THE DOOR.

  • STEP 3a: Attach the nuts holding the bottom of the scissor regulator onto the door.

• STEP 4: Connect the window lift motor.

• STEP 5: Temporarily connect the master power switch to expose the door glass mounts on the window regulator.

  • STEP 5a: Manually slide the door glass onto the window glass mounts on the window regulator.
    NOTE: It may be easier to use 1/4” x 20 x 1” bolts and nylon lock nuts to attach the window glass to the window regulator.

• STEP 6: Install the water vapor barrier.

• STEP 7: Connect the door speaker.

• STEP 8: Install the door speaker.

• STEP 9: Connect the master power window switch assembly. (If so equipped, connect the remote trunk switch.)

  • STEP 9a: Align the interior door trim panel retainers with their corresponding holes in the door and press the interior door trim panel into place.

• STEP 10: Attach the interior door trim panel retaining screws.

  • STEP 10a: Install the interior door trim panel retaining screw cover.

• STEP 11: Verify that all of the interior door trim panel screws are tight and that the window regulator is operating properly.

We appreciate your opinions regarding this product! Please call our Technical Assistant with any challenges or suggestions regarding the installation or operation of this product.
1-800-523-2492

Disclaimer:
Even though every attempt is made to ensure this information is complete and accurate, it is impossible to account for all possible circumstances or situations. Please consult with a qualified auto technician before attempting to perform any work you are not qualified to do. Automobiles can be hazardous to work on; be sure to take all necessary safety precautions. Failure to do so may result in property damage or personal injury. Certain motor vehicle standards and performance requirements may apply to your motor vehicle (such as Federal Motor Vehicle Safety Standards by the National Highway Traffic Safety Administration). Be sure that your work is performed by such standards and that you do not disable any motor vehicle safety features.

©2011 Dorman Products, Inc.
No reproductions in whole or in part without prior written approval.

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