DORMAN 740-674 Front Driver Side Power Window Regulator Installation Guide
- June 1, 2024
- DORMAN
Table of Contents
DORMAN 740-674 Front Driver Side Power Window Regulator
Product Information
Specifications
- Part Number: 740-674
- Product: Window Regulator
- Tools Required: 1/4 bolts, washers, 1/4 x 20 nylon lock nuts
Product Usage Instructions
Removal Instructions
- STEP 1: Remove the interior door trim panel retaining screws.
- STEP 2: Use a trim panel removal tool to remove the interior door trim panel. Disconnect the connector on the backside of the master power switch assembly.
- STEP 3: If your vehicle has a courtesy lamp built into the interior door trim panel, disconnect it. Otherwise, remove the master power switch assembly from the door trim panel.
- STEP 4: Remove the water vapor barrier.
- STEP 5: Disconnect the door speaker.
FAQ
- Q: Do I need any special tools to install the window regulator?
- A: Yes, you will need 1/4 bolts, washers, and 1/4 x 20 nylon lock nuts for installation.
- Q: Can I install the window regulator myself?
- A: It is recommended to refer to the shop manual for specific service procedures or seek the help of a qualified technician if you lack the necessary skills.
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/INSTALL OF WINDOW REGULATOR (740-674) Ford F-Series Pickup & Bronco 1980–96
PLEASE WEAR SAFETY GLASSES!
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 for removal and installation of a window regulator and motor assembly:
- Silicone spray lubricant
- Trim panel removal tool
- Pick
- Saddle cup assembly, tape, or wedge to hold the window in place
- Flat-blade screwdriver or plastic pry tool
- 10mm socket or driver
- Phillips screwdriver
- Grease pencil or marker
- 1/2” drill bit
- Power drill
- Large pop rivet gun capable of doing 1/4” pop rivets
- Possible materials needed are 1/4” x 20 x 1” bolts, 1/4” washers, and 1/4” x 20 nylon lock nuts
Removal Instructions
- STEP 1: Remove the interior door trim panel retaining screws.
- STEP 2: With a trim panel removal tool, remove the interior door trim panel.
- NOTE: The interior door trim panel retaining clips are roughly six (6) inches away from each other.
- STEP 2a: Disconnect the connector on the backside of the master power switch assembly.
- STEP 2b: If your vehicle came equipped with a courtesy lamp built into the interior door trim panel, please disconnect.
- NOTE: Not all vehicles came equipped with courtesy lamps built into the interior door trim panel. Some vehicles were equipped with a refl ector.
- STEP 3: Once the interior door trim panel has been removed from the door, remove the master power switch assembly by lifting it from the door trim panel and placing the master power switch assembly through the hole in the interior door trim panel.
- STEP 4: Remove the water vapor barrier.
- STEP 5: Disconnect the door speaker.
- STEP 6: Using a ½” drill bit and a power drill, drill out the two (2) rivets holding the door brace onto the door.
- NOTE: You are using the drill and drill bit to remove the head of the rivet. DO NOT DRILL ALL THE WAY THROUGH. YOU WILL DAMAGE THE DOOR AS WELL AS THE BRACE.
- STEP 7: Turn the vehicle ignition to the accessory position to lower the door glass so that you can disconnect the glass from the window regulator.
- NOTE: Once the door glass has been disconnected from the window regulator, manually slide the door glass into the up position and hold it in place with either a saddle cup assembly, painter’s tape, or a wedge.
- STEP 8: Using your ½” drill bit and power drill, remove only the heads of the rivet holding the window regulator on the door. If you drill through the rivet with your ½” drill bit, you will damage the door.
- STEP 9: Remove the window regulator through the access hole.
- STEP 10: Remove the three (3) window lift motor attaching screws and remove the window lift motor from the window regulator.
Installation Instructions
- STEP 1: Attach the window lift motor to the window regulator.
- STEP 1a: Install the window regulator through the access hole.
- STEP 2: Install the window regulator onto the door and connect the window lift motor connector.
- NOTE: If you do not have access to a large rivet gun capable of handling 1/4” x 3/4” rivets, it is okay if you use 1/4” x 20 x up to 1” bolts washers and the corresponding nylon locking nuts when installing the window regulator onto the door.
- STEP 3: Once the window regulator has been installed, manually lower the window glass into position to attach it to the window regulator
- STEP 4: Once the window glass is in position and you have verified that the glass is operating smoothly, install the door brace.
- NOTE: If you do not have access to a large rivet gun capable of handling 1/4” x 3/4” rivets, it is okay if you use 1/4” x 20 x up to 1” bolts washers and the corresponding nylon locking nuts when installing the window regulator onto the door.
- STEP 5: Attach the water vapor barrier.
- STEP 6: Place the master power switch assembly through the opening of the interior door trim panel.
- STEP 7: Connect the master power switch.
- STEP 8: Connect the door-mounted courtesy lamp.
- NOTE: Not all vehicles came equipped with a courtesy lamp. Some vehicles were equipped with a refl ector.
- STEP 9: Attach the interior door trim panel to the door.
- STEP 10: Attach the interior door trim panel retaining screws.
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STEP 11: Attach the master power window switch to the interior door trim panel.
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STEP 12: Verify that all of the interior door trim panel attaching screws are mounted securely and that the window 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 under such
standards and that you do not disable any motor vehicle safety features.
©2012 Dorman Products, Inc. No reproductions in whole or in part without prior written approval.
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