Noise Diagnosis - Front of Vehicle (Air Inlet Screen To Windshield Itch)

Noise Diagnosis - Front of Vehicle (Air Inlet Screen To Windshield Itch)





Symptom

Itching sound from the bottom of the windshield.

Possible Cause

The air inlet screen (2) is rubbing against the bottom edge of the windshield.

Diagnosis

Remove the air inlet screen (2). Look for witness marks from the windshield on the air inlet screen (2).

Corrective Active
1. Apply isolation (vinyl nitril foam or equivalent) to the inlet screen and windshield interface.
2. Add foam tape to the right and/or left side of the air inlet screen(s) (2).
3. Foam strips are to be installed 1.0 mm to 3.0 mm (.04 in to.08 in) inboard from the glass interface edge of the inlet screen

* A single (10 in x 1 in) foam strip added to the interference, may be sufficient.
* Or, two strips may be required:
Foam strips are to butted together at the center where the left and right inlet screens interlock.

- Right side foam strip length is 955 mm (37.60 in).
- Left side foam strip length is 1055 mm (41.54 in).