Jeep J-10 Series 1982 Technical & Service Manual page 978

3A-2 WATER LEAK/WIND NOISE DIAGNOSIS AND REPAIR
a bright light along the seams and joints from under the
vehicle.
Water/Rust Streaks
Another thing to look for in diagnosing water leaks is
a pattern of rust or water streaks on interior sheet metal
and trim. For instance, a symptom of rear window leak
age or inadequately sealed coach joint is water dripping
into the rear compartment. This will show up as water
or rust streaks on the rear compartment trim or
wheelhouse.
Adhesive, Sealant and Coating Materials
• Adhesives join or bond materials together
• Sealants close gaps or seams between sheet metal or
materials and prevent the passage of water, dust,
air, etc.
• Coatings protect against corrosion and abrasion, and
dampen sound or vibration—and may also be used to
seal out water and dust
Bonding Surftcs Preparation
For the various materials to adhere and form an effec
tive bond, it is essential that they are applied to clean,
dry surfaces. After a water test, dry the joint or seam
with clean dry compressed air then wipe the joint, or
seam, with a cloth dampened in 3M General Purpose
Adhesive Cleaner, or equivalent.
WATER IN FRONT PASSENGER COMPARTMENT
Windshield
Leaks can occur between the windshield glass and
rubber weatherstrip or between the rubber weatherstrip
and body pinchweld flange. Leaks between the wind
shield glass and rubber weatherstrip will be indicated by
water which is visible on the inside of the glass or on the
front floor. Leaks between the rubber weatherstrip and
body pinchweld flange will track down to appear on the
front floor. Also, water can enter at burn holes in the
body pinchweld flange.
Spray Diagnosis and Reptir
(1) Remove windshield reveal mouldings, as de
scribed in Chapter 3N.
(2) Perform the following spray test using guide
lines described under Spray Test above.
(a) Starting at base of windshield A-pillar on
one side of vehicle, spray water onto glass across the
bottom between the dash panel assembly and glass.
(b) Test vertical section of A-pillar and across
top of glass.
(c) Repeat steps (a) and (b) for other side of
vehicle.
(3) If leaks are noted, dry out suspect area as de
scribed under Bonding Surface Preparation.
(4) Seal windshield as described in detail in Chapter
3N.
(5) Repeat spray test to ensure that an effective
repair has been made.
(6) Install windshield reveal mouldings as described
in Chapter 3N.
Ultnsole Dhgfittls tod Repair
(1) Dry suspect areas thoroughly. If an opening or
hole is full of water, the ultrasonic sound will be
blocked.
(2) Remove windshield reveal mouldings, as de
scribed in Chapter 3N.
(3) Using Listener Tool J-23455-01, perform Ultra
sonic Test as follows:
(a) Place transmitter in vehicle adjacent to
windshield and turn switch on.
(b) Close all doors, windows and air vents.
(c) Slowly pass listener all around windshield
opening.
(d) Mark any area where a meter reading of
approximately5 is obtained, as a indication of a possible
leak.
(4) Clean suspect area as described above under
Bonding Surface Preparation.
(5) Seal windshield as described in detail in Chapter
3N.
(6) Repeat ultrasonic test to ensure that an effec
tive repair has been made.
(7) Install windshield reveal mouldings as described
in Chapter 3N.
Dash Panel Assembly
Water leaks can occur at the inside of dash panel
assembly due to spot weld burn holes or excessive gaps
and/or lack of sealer at the dash panel joints. Water
leaks from these burn holes or joints will result in water
puddles forming on the front carpet or floorpan. Water
can also enter through the many holes stamped into the
dash panel assembly due to, loose grommets and/or
incorrectly installed components and attaching hard
ware. Water will appear on the front carpet or floorpan
having tracked down the inside of the dash panel
assembly.
8pny DitfBOSIs ml Rtptir
(1) Pull back carpet and sound insulation material,
if equipped.
(2) Open hood.
(3) Perform the following spray test using guide
lines described under Spray Test above.
(a) Starting at bottom of dash panel on one side
of vehicle spray water onto suspect joints, grommets
and components.
(b) Spray water across top of dash panel.
(c) Repeat spray test on other side of vehicle.
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