Escort Thermo Check for Windows 1.6 User Manual download pdf (Page 2)

The cooling system is of the pressurised

pump-assisted thermo-syphon type. The

system consists of the radiator, water pump,

thermostat, electric cooling fan, expansion

tank and associated hoses.

The system functions as follows. When the

coolant is cold the thermostat is shut and

coolant flow is restricted to the cylinder block,

cylinder head, inlet manifold and the vehicle

interior heater matrix. As the temperature of

the coolant rises, the thermostat opens

allowing the coolant to pass into the radiator.

The coolant now circulates through the

radiator where it is cooled by the inrush of air

when the car is in forward motion,

supplemented by the operation of the radiator

cooling fan. Coolant is then circulated from

the base of the radiator, up through the water

pump, and into the cylinder block to complete

the circuit.

On OHV engines, the water pump is driven

by a vee-belt from the crankshaft pulley. On

CVH engines, the water pump is driven by the

timing belt.

When the engine is at normal operating

temperature the coolant expands, and some

of it is displaced into the expansion tank. The

coolant collects in the tank and is returned to

the radiator when the system cools. On 1.1

litre engines the system pressure cap is fitted

to the thermostat housing and the expansion

tank acts as a simple overflow bottle. On all

other engines the pressure cap is fitted to the

expansion tank which is pressurised with the

rest of the system.

On all engines except 1.1 litre CVH versions

the radiator cooling fan is controlled by a

thermal switch located in the thermostat

housing. When the coolant reaches a

predetermined temperature the switch

contacts close thus actuating the fan. On 1.1

litre CVH engines with standard equipment

the cooling fan operates continuously

whenever the ignition is switched on.

All models except RS Turbo

Removal

1 Disconnect the battery negative terminal.

2 Disconnect the wiring plug at the fan motor

and unclip the wiring from the shroud.

3 On pre-1986 models the fan shroud is

secured to the radiator with four bolts.

Unscrew the two upper bolts and slacken the

two lower bolts (see illustration).

4 For 1986 models onwards the shroud is

retained by two bolts at the top and two clips

at the bottom. Unscrew the two upper bolts

(see illustration).

5 On all models carefully lift the fan and

shroud assembly upwards and out of the

engine compartment, taking care not to

damage the radiator.

6 Extract the retaining clip and remove the

fan from the motor shaft.

7 Unscrew the three nuts and separate the

motor from the shroud (see illustration).

Refitting

8 Reassembly and refitting are reversals of

the removal and dismantling operations.

RS Turbo models

1985 models

Removal

9 Disconnect the battery negative terminal.

10 Detach the transverse coolant hose from

the two clips above the radiator (see

illustration).

11 Unscrew the three fan shroud retaining

bolts.

12 Disconnect the upper and lower air hoses

at the turbo intercooler mounted alongside

the radiator.

13 Undo the two air cleaner retaining bolts

and remove the air cleaner assembly (see

illustration).

14 Undo the single upper retaining screw and

lift the intercooler to disengage the lower

retaining peg (see illustration). Remove the

intercooler.

15 Undo the two upper radiator retaining

bolts, disengage the lower guides and move

the radiator towards the engine taking care

not to stretch the hoses.

16 Disconnect the fan wiring multi-plug,

release the cable-tie and separate the fan

wiring from the harness.

2 Radiator fan - removal and

refitting

1 General description

3•2 Cooling, heating and ventilation systems

2.3 Radiator fan shroud retaining bolts -

pre-1986 models

2.4 Radiator fan shroud retaining bolts -

1986 models onwards

2.7 Fan motor retaining nuts - pre-1986

models

2.10 Radiator fan removal details -

1985 RS Turbo

A Transverse cooling hose

B Transverse cooling hose clips

C Fan shroud retaining bolts

2.13 Air cleaner retaining bolts (A) - 1985

RS Turbo

1 2 3 4 5 6 7 8

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Escort Thermo Check for Windows 1.6 User Manual Page 2

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