2009 Infiniti G37

Windshield, quarter glass, and back glass removal and replacement instructions
By Bob Beranek
December 15, 2009
AUTO

Sponsored by Dow Automotive

© 2009 National Glass Association. All rights reserved. Visit GlassMagazine.com for glass removal and replacement instructions for more than 400 vehicles. To sign up to receive the For Technicians Only e-bulletin, email FTO@glass.org

Vehicle type: Two-door coupe

NAGS® numbers*: Windshield FW2879 solar, with molding; quarter glass FQ23645/46 solar, encapsulated; and back glass FB23647 solar, heated, antenna

Helpful tools or supplies: An interior cutout tool for the quarter glass, and a cold knife for the back glass

Watch for: The back glass is exposed on all sides and there is plenty of room between the glass and the wall of the pinchweld; however, the floor of the pinchweld is exposed also, so take care during cutout, priming, and bead placement.

*With permission from National Auto Glass Specifications. Call NAGS at 800/551-4012 or visit http://glass.mitchell.com/.

A. Windshield
Preparation

1. Cover the front seats, floorboards, dash and steering wheel with a clean drop cloth or disposable plastic covers. Note: Always wear eye and hand protection when working with glass. Make sure you have the right glass and moldings and that the urethane systems you are about to use are current. Windshield part number is FW2879.

2. Drape the fender with a fender cover and tape up any vulnerable areas on the vehicle to protect against possible damage. Tape up the defroster vents to prevent debris from falling into the openings.

3. Use a 25T Torx mirror tool to remove the rearview mirror; slide the mirror off the pad.

4. Remove the windshield-wiper nut covers.

5. Remove the windshield-wiper nuts using a 14-millimeter wrench or socket. Move the wiper arm in an up-and-down motion to break it loose from the post, or use a wiper-puller. Caution: Wipers can sometimes be hard to remove. To avoid stressing the post, use a wiper-puller.

6. Remove the multi-piece cowl panel. To do so, first remove the two access panels that cover the battery and brake fluid.

7. Remove the 12 retainers: four under each access panel, two in the center and two in the corners.

8. Disconnect and remove the two fender bumpers at each corner of the cowl. These bumpers overlap the A-pillar moldings. Place the cowl panel in a safe place.

9. The top molding is a wraparound style that comes bonded to the glass.

10. To remove the A-pillar reveal moldings, begin by removing the push-in retainer at the base of the door weatherstrip.

11. Peel back the weatherstrip to the B pillar, and remove the eight Phillips screws along the weatherstrip retainer.

12. Remove the color-coordinated trim from the A pillar. Note: Before beginning windshield removal, verify the new windshield is the correct one and the urethanes and primers are current. Never use outdated products as this could jeopardize the structural integrity of the vehicle and the safety of its passengers.

Removal
13. Make sure cutting blades are sufficiently sharp.

14. Before cutting out the windshield, remove contaminants from the glass and pinchweld to prevent contact with the urethane.

15. Use the cutting tools of your choice to remove the glass from the adhesive bead. Be careful not to hit or cut the gravity stops; mark their location with a marking pencil or retention tape. If you use a power tool, lubricate the cutting area with water. Spray the top and sides; then make your cuts.

16. Take the windshield out of the opening using vacuum cups. Make sure the vacuum cups do not overlap a crack in the glass. Lift the glass and place it on a windshield stand or suitable workstation.

Installation
17. After cutting the windshield out, remove contaminants such as dirt, moisture and debris from the pinchweld. Clean the dashboard.

18. Dry fit the new glass to the opening. Mark your glass using a grease pencil or retention molding tape.

19. Place your vacuum cups on the new windshield in the appropriate location.

20. Set the windshield onto the old urethane.

21. With the windshield resting in the opening, make sure it is in the right spot.

22. Adjust both sides to the correct setting, marking the passenger side, then the driver side. Lift the glass and place it on a windshield stand or suitable workstation.

23. Follow the urethane manufacturer’s recommendations for installation.

24. Clean the inside of the windshield using a urethane manufacturer-recommended product. Do not touch the bonding area of the windshield after cleaning, prepping or priming it.

25. Wear powder-free Nitrile gloves to protect against harsh chemicals.

26. Apply the glass prep and primer following the urethane manufacturer’s recommendations.

27. Using the tool of your choice, remove the original urethane bead, leaving 1 mm-2 mm of existing urethane on the pinchweld. Make sure there are no contaminants and do not touch the pinchweld after you have prepped the area.

28. Apply the pinchweld primer only to the areas where needed, and follow the urethane manufacturer’s recommendations. Allow preps and primers to dry as recommended by the urethane manufacturer.

29. Apply a triangular bead of urethane to the same path as the freshly cut urethane on the pinchweld. Before cutting your V-notch, cut the tip off of your nozzle with a nozzle-cutter. With the cut nozzle, measure to the top of the roofline, and at 1/16-inch higher than the roofline, make a mark on the nozzle with a pen or marker. Notch the nozzle up to the marked line; this will give you the appropriate triangular bead.

30. Lift the windshield from the windshield stand or workstation using vacuum cups. Set the windshield on the urethane at the mark you made during your dry fit. Lower the driver’s side of the windshield onto the urethane and line it up with the dry-fit mark; it is now in place.

31. The windshield is now ready to be decked. Press firmly to ensure a good seal.

32. Before re-installing the parts, check for leaks. Use a leak detector to go over the perimeter of the windshield. If you find a leak, apply more pressure or add more urethane to the spot and ensure that the glass makes contact with the wet urethane.

33. Re-install the removed parts in reverse order.

34. Allow the urethane to cure according to the urethane manufacturer’s recommended cure time before returning the vehicle to the customer. Warning: Disregarding the safe drive-away time that your urethane manufacturer recommends could jeopardize the structural integrity of the vehicle and the safety of its passengers.

35. You have completed the removal and replacement of the windshield.

B. Quarter glass
Removal

1. Make sure you have the right glass. Quarter glass part number is FQ23645/46. The glass is encapsulated with all of the exterior trim.

2. Remove the interior trim that surrounds the perimeter of the quarter glass.

3. Remove the seat belt shoulder harness from the B pillar.

4. Peel back the B-pillar weatherstrip to provide for easy access during cutout.

5. Cut out the glass using the tool of your choice. An interior cutout tool is recommended. If you use a power tool, lubricate the cutting area with water. Spray the top and sides; then make your cuts.

Installation
6. After cutting the quarter glass out, remove contaminants such as dirt, moisture and other debris from the pinchweld.

7. Dry fit the new glass to the opening. Mark your glass using a grease pencil or retention molding tape.

8. Place your vacuum cups on the new quarter glass in the appropriate location.

9. Set the glass onto the old urethane.

10. With the glass resting in the opening, make sure it is in the right spot.

11. Adjust both sides to the correct setting. Lift the glass and place it on a windshield stand or suitable workstation.

12. Follow the urethane manufacturer’s recommendations for installation.

13. Clean the inside of the glass using a urethane manufacturer-recommended product. Do not touch the bonding area of the quarter glass after cleaning, prepping or priming it.
 

14. Wear powder-free Nitrile gloves to protect against harsh chemicals.

15. Apply the glass prep and primer following the urethane manufacturer’s recommendations.

16. Using the tool of your choice, remove as much of the original urethane bead as the urethane manufacturer recommends. Make sure there are no contaminants and do not touch the pinchweld after you have prepped the area.

17. Apply the pinchweld primer only to the areas where needed, and follow the urethane manufacturer’s recommendations. Allow preps and primers to dry as recommended by the urethane manufacturer.

18. Apply a triangular bead of urethane to the same path as the freshly cut urethane on the pinchweld. Before cutting your V-notch, cut the tip off of your nozzle with a nozzle-cutter. With the cut nozzle, measure to the top of the roofline, and at 1/16-inch higher than the roofline, make a mark on the nozzle with a pen or marker. Notch the nozzle up to the marked line; this will give you the appropriate triangular bead.

19. Lift the quarter glass from the windshield stand or workstation using vacuum cups. Set the glass on the urethane at the mark you made during your dry fit. Line it up with the dry-fit marks; it is now in place.

20. The quarter glass is now ready to be decked. Press firmly to ensure a good seal.

21. Before re-installing the parts, check for leaks. Use a leak detector to go over the perimeter of the glass. If you find a leak, apply more pressure or add more urethane to the spot and ensure that the glass makes contact with the wet urethane.

22. Re-install the removed parts in reverse order.

23. Allow the urethane to cure according to the urethane manufacturer’s recommended cure time before returning the vehicle to the customer.

24. You have completed the removal and replacement of the quarter glass.

C. Back glass
Removal

1. Make sure you have the right glass. Back glass part number is FB23647. The glass is exposed on all sides and there is plenty of room between the glass and the wall of the pinchweld; however, the floor of the pinchweld is exposed also, so take care during cutout, priming, and bead placement.

2. Remove the interior garnish moldings on both sides.

3. Disconnect the three connectors on the driver side of the vehicle. One is the defroster lead and the other two are antenna leads. Disconnect the one connector on the passenger side. This connector is the defroster ground.

4. There are no gravity stops on this back glass, so you’ll need to determine a method of support until the urethane cures.

5. Cut out the glass using the tool of your choice. A cold knife or other outside cutting tool is recommended to reduce the possibility of pinchweld damage. If you use a power tool, lubricate the cutting area with water. Spray the top and sides; then make your cuts.

Installation
6. After cutting the back glass out, remove contaminants such as dirt, moisture and other debris from the pinchweld.

7. Dry fit the new glass to the opening. Mark your glass using a grease pencil or retention molding tape.

8. Place your vacuum cups on the new back glass in the appropriate location.

9. Set the glass onto the old urethane.

10. With the glass resting in the opening, make sure it is in the right spot.

11. Adjust both sides to the correct setting. Lift the glass and place it on a windshield stand or suitable workstation.

12. Follow the urethane manufacturer’s recommendations for installation.

13. Clean the inside of the glass using a urethane manufacturer-recommended product. Do not touch the bonding area of the back glass after cleaning, prepping or priming it.

14. Wear powder-free Nitrile gloves to protect against harsh chemicals.

15. Apply the glass prep and primer following the urethane manufacturer’s recommendations.

16. Using the tool of your choice, remove as much of the original urethane bead as the urethane manufacturer recommends. Make sure there are no contaminants and do not touch the pinchweld after you have prepped the area.

17. Apply the pinchweld primer only to the areas where needed, and follow the urethane manufacturer’s recommendations. Allow preps and primers to dry as recommended by the urethane manufacturer.

18. Apply a triangular bead of urethane to the same path as the freshly cut urethane on the pinchweld. Before cutting your V-notch, cut the tip off of your nozzle with a nozzle-cutter. With the cut nozzle, measure to the top of the roofline, and at 1/16-inch higher than the roofline, make a mark on the nozzle with a pen or marker. Notch the nozzle up to the marked line; this will give you the appropriate triangular bead.

19. Lift the back glass from the windshield stand or workstation using vacuum cups. Set the glass on the urethane at the mark you made during your dry fit. Line it up with the dry-fit marks; it is now in place.

20. The back glass is now ready to be decked. Press firmly to ensure a good seal.

21. Before re-installing the parts, check for leaks. Use a leak detector to go over the perimeter of the glass. If you find a leak, apply more pressure or add more urethane to the spot and ensure that the glass makes contact with the wet urethane.

22. Re-install the removed parts in reverse order.

23. Allow the urethane to cure according to the urethane manufacturer’s recommended cure time before returning the vehicle to the customer.

24. Check operation of the back glass.

25. You have completed the removal and replacement of the back glass.

© 2009 National Glass Association. All rights reserved. Visit GlassMagazine.com for glass removal and replacement instructions for more than 400 vehicles. To sign up to receive the For Technicians Only e-bulletin, email FTO@glass.org 

The author is president of Automotive Glass Experts in Sun Prairie, Wis. Write him at bob@autoglassconsultants.com.