LR3/Disco 3
Water Leaks
General
If water leaks occur after bodywork repairs, the cause can be established using the checks described below. A
systematic and logical procedure is required to locate water leaks. Before beginning extensive checks, a thorough
visual inspection must be carried out.
Visual Inspection The following characteristics may indicate existing leaks: Check the clearance and accurate fit of
ancillary components such as the hood, tailgate, liftgate, doors, and so on. Check for correct fit and possible
damage to sealing elements such as blanking plugs, rubber door seals, and so on. Check water drain holes for
unhindered flow.
The following characteristics may indicate existing leaks:
Check the clearance and accurate fit of ancillary components such as the hood, tailgate, liftgate, doors,
and so on.
Check for correct fit and possible damage to sealing elements such as blanking plugs, rubber door seals,
and so on.
Check water drain holes for unhindered flow.
Various tests can be used to provide further information on possible leaks: Water test Washer test Road test
Chalk (powder) test
Water test
Washer test
Road test
Chalk (powder) test
Practical execution of tests and checks
Water test
NOTE :
Carry out the water test with a second person present (passenger compartment).
Use variable washer nozzles (concentrated water jet to fine spray mist).
Start in the lower section and spray the whole area, working upwards in stages.
Washer test
Further tests can be carried out in the washer system.
Some leaks originate here, or only occur here.
The relevant passenger compartment should be checked using a torch during the wash procedure.
Road test
If no leaks are located during the tests above, road tests should be carried out on wet roads.
Road tests under various conditions: At various speeds. On various road surfaces (asphalt to cobbles). With
loaded or unloaded vehicle. Driving through puddles (splash water).
At various speeds.
On various road surfaces (asphalt to cobbles).
With loaded or unloaded vehicle.
Driving through puddles (splash water).
Chalk test (powder test)
In this test, the clamping load and the bearing surface of the seal are checked.
Performing the test: Dust the door seal with powder or coat with chalk. Coat the bearing surface of the seal with a
thin film of grease. Slowly close the door and open it again. Check the width and continuity of the imprint on the
door seal.
Dust the door seal with powder or coat with chalk.
Coat the bearing surface of the seal with a thin film of grease.
Published : Aug 2, 2004
Never aim a jet of water directly at a rubber seal.
