Discovery I (LJ) V8-4.0L (1996)
Heater Core Case: Customer Interest
Heater Plenum - Water Leaks to Interior
10/3/95
76/01/95/US
SUBJECT:
Water Ingress into the Passenger Footwell
AFFECTED VEHICLES:
All Derivatives from LJ 081991
DETAIL
We have received a number of product reports which indicate water ingress into the vehicle through the plenum/heater intake duct. Water collects in the
plenum sponge that is situated above the intake duct and drips into the intake. Water is then drawn into the heater assembly. On passing through the
heater assembly water leaks into the passenger footwell. The reports also indicate water is taking the same route via the windscreen lower seal. These
conditions show in the following ways wet carpets and water leaking from the heater.
To overcome this condition a deflector strip has been introduced to route water away from the heater air intake duct. This deflector can be retrofitted to
vehicles that exhibit this condition.
ACTION REQUIRED
In the event of a customer complaint remove the plenum, and fit deflector to the underside of the plenum. Seal lower windscreen rubber to plenum as
described in process below.
PARTS INFORMATION
Seal AWR 2947
Plenum clips MXC 3130 PUB 2 off
Packing washers WC 110061 L
Sikaflex 221,(black) or similar.
PROCEDURE
Illustrations shown are Right Hand Drive Model
Procedure 1 Vin range LJ 081991 to LJ111509
1)
Remove plenum as directed in the workshop manual section 80 Heating and Ventilation, section 84 Wipers and Washers.
2)
Clean the underside of the plenum on passenger side as shown in diagram A, where the deflector will be attached.