Jeep J-10 Series 1982 Technical & Service Manual page 979

(4) If leaks are noted, dry out suspect area as de
scribed above under Bonding Surface Preparation.
(5) Straighten any distorted flanges.
(6) Seal suspect spot weld burn holes and dash
panel joints using 3M All-Around Autobody Sealant, or
equivalent.
NOTE: Use care not to direct sealer into air ducts.
(7) Seal interior plenumn chamber leaks by attach
ing a length of flexible plastic hose to nozzle of appli
cator gun specified for use with 3M Joint and Seam
Sealer, or equivalent.
(8) Check all grommets to be sure they are correctly
installed. If necessary, apply sealant to ensure a water
tight seal.
(9) Make sure that all suspect components and at
taching hardware are properly installed. If necessary,
apply sealant to ensure a water tight seal.
(10) Repeat spray test to ensure that an effective
repair has been made.
(11) Properly position sound insulation material and
carpet, if equipped.
(12) Close hood.
Ultrasonic Diagnosis tad Repair
(1) Dry suspect areas thoroughly. If an opening or
hole is full of water, the ultrasonic sound will be
blocked.
(2) Pull back carpet and sound insulation material,
if equipped.
(3) Open hood.
(4) Close all windows, doors and air vents.
(5) Using Listener Tool J-23455-01, perform ultra
sonic test as follows:
(a) Place transmitter in vehicle adjacent to
dash panel assembly and turn switch on.
(b) Slowly pass listener over each joint, grom-
met and component.
(c) Mark any area where a meter reading of
approximately 5 is obtained, as an indication of a pos
sible leak.
(6) Clean suspect area as described above under
Bonding Surface Preparation.
(7) Straighten any distorted flanges or seams.
(8) Seal suspect spot weld burn holes and dash
panel joints using 3M AU-Around Autobody Sealant, or
equivalent.
NOTE: Use care not to direct sealer into air ducts.
(9) Seal interior plenumn chamber leaks by attach
ing a length of flexible plastic hose to nozzle of appli
cator gun specified for use with 3M Joint and Seam
Sealer, or equivalent.
(10) Check all grommets to be sure they are correctly
installed. If necessary, apply sealant to ensure a water
tight seal.
(11) Make sure that all suspect components and at
taching hardware are properly installed. If necessary,
WATER LEAK/WIND NOISE DIAGNOSIS AND REPAIR 3A-3
apply 3M AU-Around Autobody Sealant, or equivalent,
to ensure a water tight seal.
(12) Repeat ultrasonic test to ensure that an effec
tive repair has been made.
(13) Properly position sound insulation material and
carpet, if equipped.
(14) Close hood.
Front Floorpan, Side Sills, Cowl Side Panels or
Front Hinge Pillars
Water can enter at dash panel assembly-to-front
floorpan seams due to gaps, distorted panels and/or lack
of sealer. Water appears under the front carpet or on
front floorpan.
Leaks can occur between the side sills, front floorpan,
cowl side panels or front hinge pillars due to excessive
gaps and/or lack of sealer at the panel joints. Water
leaks from these joints will result in a wet front carpet,
sound insulation material or front floorpan.
Also, leaking floorpan plugs will allow water to enter
the front floorpan area or under the carpet and sound
insulation material.
Spray Diagnosis and Repair
(1) Remove front seat(s).
(2) Remove front carpet and sound insulation mate
rial, if equipped.
(3) Open hood.
(4) Perform the following spray test using guide
lines described under Spray Test above.
(a) Spray water from under front fender at
joint of floorpan and cowl side panel or front hinge
pillar.
(b) Next spray across floorpan-to-dash panel
seam and towards rear of vehicle at floorpan plugs.
(c) Move spray slowly upwards until water is
directed at joint of dash panel-to-cowl side panel.
(d) Repeat spray test on other side of vehicle.
(e) If leaks are noted, dry out suspect area as
described above under Bonding Surface Preparation.
(5) Straighten any distorted panels.
(6) Seal suspect joints or seams using 3M Ail-
Around Autobody Sealant, or equivalent.
(7) Examine suspect area for loose or missing body
plugs.
(a) Check that hardened sealer or road dirt is
not preventing the plug from seating.
(b) Check hole to be sure that it is not distorted.
(c) If necessary, reshape floorpan at plug hole
and add a bead of 3M Ail-Around Autobody Sealant, or
equivalent, around hole to ensure a satisfactory water
tight seal.
(8) Repeat spray test to ensure that an effective
repair has been made.
(9) Close hood.
(10) Install sound insulation material and front car
pet, if equipped.