Cleaning, Preparation and Glass Installation
Cleaning and Preparation
1. Using a utility knife, trim excess urethane from pinch weld flange. It is not necessary that all traces of material be removed, but there should not be any mounds or loose pieces left.
2. Repair any areas on pinch weld flange nicked during glass removal using touch-up paint of the appropriate color. Do not get paint or any other contamination on remaining urethane base.
3. After touch-up paint is dry, apply a urethane bonding body primer to any painted metal that urethane will adhere to. Do not get primer or any other contamination on remaining urethane base.
IMPORTANT:
It is important that urethane have either old urethane or a primer as a surface to adhere to. Urethane does not adhere very well to unprimed painted metal or glass.
Glass Installation
1. Apply suction cups to glass if necessary.
2. With the aid of a helper, position glass in opening.
3. Check relationship of glass to urethane on pinch-weld flange. Gaps in excess of 3 mm (1/8") must be corrected by applying more adhesive than specified.
4. Apply a piece of masking tape over each edge of glass and adjacent body pillar and roof. Slit tape vertically at edge of glass. During installation, tape on glass can be aligned with tape on body to guide glass into desired position. Remove glass.
5. Clean surface of glass to which adhesive will be applied (around edge of inside surface ) by wiping with a clean, alcohol dampened doth. Allow to air dry.
6. (windshield only) Apply sound insulator to bottom of glass just above etched line in glass. If line is not visible, apply insulator strip 62 mm (2-7/16") from bottom edge of glass. NOTICE: Failure to install acoustic strip could cause windshield breakage.
7. (windshield only) Align centering marks on windshield and upper reveal molding retainer and press onto edge of glass.
8. Install cowl screen assembly with wiper down stops removed.
IMPORTANT Two glass primers are provided in the urethane adhesive kit, a clear and a black primer. The first and most important primer is the clear. Once applied, it is important to wipe off excess immediately. This primer dries almost instantly and will stain the viewing area of the glass, so be sure to apply evenly and keep away from viewing area. Do not apply clear primer over black primer. The black primer is always applied after the clear primer.
9. Using a clean cloth, apply clear primer around all edges of glass and 15 mm wide on inner surface, then immediately wipe off from where it was just applied.
10. Using a small brush, apply black primer from the adhesive kit in the same locations as clear primer.
11. Install reveal molding retainers to glass.
12. Apply a smooth continuous bead of urethane around inside surface of glass, where it was previously primed. Stay close to the edge and refer to bead dimensions in Figure 5. Bottom bead on windshield is applied just below etched line in glass. If etched line is not visible, apply urethane 54 mm (2-1/8") from bottom edge of glass, just below acoustic strip.
13. With aid of a helper, lift glass into window opening. On back window installations it will be necessary to use suction cups to position glass in opening. Windshield glass can be positioned without aid of carrying devices. As shown in Figure 6, carry glass with one hand on inside of glass and one hand on outside. At window opening, put glass in horizontal position. While one man holds glass in this position, second man can reach one arm around body pillar and support glass while other man assumes same position.
14. With glass centered in opening, use tape guides to carefully place glass in proper position.
15. Press glass firmly to "wet-out" and set adhesive. Use care to avoid excessive squeeze out which would cause an appearance problem. Using small disposable brush or flat-blade tool, paddle material around edge of glass to ensure watertight seal.
If necessary, paddle additional material to fill voids in seal.
16. Watertest car at once using soft spray. Use warm or hot water if available. Do not direct hard stream of water at fresh adhesive material. If any leaks are found, paddle in extra adhesive at leak point using a small disposable brush or flat-blade tool. Water applied on top of urethane adhesive, either during watertest or as a separate operation, will speed up the cure of the urethane.