Ford Granada 1985-1994, Owner'S Manual

Page: 107 / 254

V6 engines
17 The thermostat is removed in the course
of water pump removal.
1 A rough test of the thermostat may be made
by suspending it with a piece of string in a
saucepan full of water (see illustration). Bring
the water to the boil. The thermostat most
open by the time the water boils. If not, renew
it.
2 If a thermometer is available, the precise
opening temperature of the thermostat may be
determined and compared with that given in
the Specifications.
3 A thermostat which fails to close as the
water cools must also be renewed.
1 Disconnect the battery negative lead.
2 Remove the upper half of the fan shroud
(two bolts, four clips).
3 Undo the nut which secures the fan clutch
to the water pump. This nut has a left-hand
thread, ie it is undone in a clockwise direction.
A thin cranked spanner, 32 mm (OHC) or 36
mm (V6) AF is needed (see illustration);
alternatively, if two of the pulley bolts are
removed, a normal thickness or even an
adjustable spanner can be used (see
illustrations).
Tap the spanner with a mallet if
need be to release the nut.
4 The fan can now be unbolted from the
viscous clutch if required. Do not overtighten
the bolts when refitting.
5 Refit by reversing the removal operations.
1 Disconnect the battery negative lead.
2 To provide additional clearance when
removing the cooling fan shroud assembly
(which is removed from below the vehicle),
apply the handbrake, then jack up the front of
the vehicle and support it securely on axle
stands (see “Jacking”).
3 Disconnect the wiring plug(s) from the
motor(s), and where applicable, unclip the
wiring from the fan shroud.
4 Unclip the expansion tank hose from the fan
shroud.
5 Unscrew the two nuts securing the fan shroud
to the top of the radiator, then tilt the top of the
shroud away from the radiator, and lift the
shroud to release the lower securing clips.
Withdraw the assembly from below the vehicle.
6 To remove the fan blades, prise the
securing clip from the end of the motor shaft.
7 The motor can be separated from the fan
shroud by unscrewing the three securing nuts
and bolts.
8 Note that two cooling fans may be fitted,
depending on model. Both fans are secured to
the shroud in the same manner.
9 Refitting is a reversal of removal, but when
fitting the fan blades, ensure that the drive dog
on the motor shaft engages with the slot in the
rear of the fan blades.
SOHC engines
1 Disconnect the battery negative lead.
2 Drain the cooling system.
3 Remove the fan and viscous coupling.
4 If not already done, remove the pump
drivebelt(s), then unbolt and remove the water
pump pulley (see illustration).
5 Disconnect the radiator bottom hose and
the heater return hose from the pump.
6 Remove the timing belt cover, which is
secured by three bolts.
11 Water pump - removal and
refitting
10 Electric cooling fan(s) -
removal and refitting
9 Viscous-coupled fan - removal
and refitting
8 Thermostat - testing
Cooling, heating and ventilation systems 3•5
3
7.16 Thermostat relief valve (arrowed)
positioned in the 12 o’clock position
8.1 Checking the thermostat opening
temperature
9.3a Dimensions of spanner for undoing
fan clutch nut. Spanner thickness must not
exceed 5 mm (0.2 in)
9.3b Undoing the viscous fan clutch nut 9.3c Removing the fan and clutch 11.4 Undoing a water pump pulley bolt
X = 10 mm (0.4 in)
Y = 10 mm (0.4 in) Z = 50 mm (2.0 in)
If problems are experienced
with the pulley turning as the
nut is undone, remove the
drivebelt and clamp an old
drivebelt round the pulley to restrain it,
using self-locking pliers.