INSTALLATION
(1) Clean heater tube sealing surfaces.
(2) Install new O-ring on heater tube.
(3) Install heater tube on manifold
(4) Install retaining bolts and tighten to 12 N·m
(105 in. lbs.).
(5) Install lower and upper intake manifolds. Refer
to ENGINE for procedures.
(6) Refill cooling system. Refer to procedure in this
section.
THERMOSTAT—2.7L
REMOVAL
(1) Disconnect negative cable from remote jumper
terminal.
WARNING: DO NOT REMOVE PRESSURE CAP
WITH THE SYSTEM HOT AND UNDER PRESSURE
BECAUSE SERIOUS BURNS FROM COOLANT CAN
OCCUR.
(2) Drain cooling system.
(3) Remove accessory drive belt for removal of the
generator.
(4) Raise vehicle on hoist.
(5) Remove generator attaching bolts. Set genera-
tor aside for ease of access to thermostat.
(6) Remove lower radiator and heater hoses from
thermostat housing.
(7) Remove thermostat housing bolts (Fig. 30).
(8) Remove thermostat and housing.
INSTALLATION
(1) Clean gasket sealing surfaces.
NOTE: Install thermostat with the bleed valve
located at the 12 o’clock position.
(2) Install thermostat and gasket into the thermo-
stat housing.
(3) Install thermostat and housing to cylinder
block. Tighten attaching bolts to 12 N·m (105 in. lbs.)
(Fig. 30).
(4) Connect heater and lower radiator hoses.
Install hose clamps.
(5) Install generator and attaching bolts.
(6) Lower vehicle.
(7) Install accessory drive belt. Refer to procedure
outlined in this section.
(8) Refill cooling system. Refer to Cooling System
Refilling.
(9) Connect negative cable to remote jumper termi-
nal.
Fig. 29 Heater Supply Tube—3.2/3.5L
1 – COOLANT TEMPERATURE SENSOR
2 – O-RING
3 – BOLT
4 – HEATER SUPPLY TUBE
5 – BOLT
Fig. 30 Thermostat and Housing—2.7L Engine
1 – THERMOSTAT AND GASKET
2 – THERMOSTAT HOUSING/COOLANT INLET
LH COOLING SYSTEM 7 - 25
REMOVAL AND INSTALLATION (Continued)
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