DAF CF65, CF75, CF85 Series . Manual - part 236

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Removal and installation

PE ENGINE COOLING SYSTEM

CF65/75/85 series

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5. REMOVAL AND INSTALLATION

5.1 REMOVAL AND INSTALLATION, COOLANT PUMP

Removal, coolant pump
1.

Drain the coolant. See "Draining and filling".

2.

Remove the V-belt from the air conditioning 

compressor and the poly-V-belt from the 

alternator.

3.

Remove the pulley from the coolant pump.

4.

Remove the attachment bolts from the 

thermostat housing on the coolant pipe and 

remove the thermostat housing and 

connection piece.

5.

Disconnect all coolant hoses connected to 

the coolant pump.

6.

Disconnect the pipe from the coolant pump 

to the coolant filter.

7.

Remove the attachment bolts from the 

coolant pump.

8.

Remove the coolant pump.

Installation, coolant pump
1.

Thoroughly clean and check the sealing 

surfaces of the coolant pump, the thermostat 

housing and the cylinder block.

2.

Install the coolant pump, using a new gasket. 

Fit the attachment bolts. Tighten the 

attachment bolts to the specified torque. See 

"Technical data".

3.

Install the connection piece with new O-rings 

onto the coolant pump.

4.

Fit new O-rings to the thermostat housing 

and fit it to the coolant pipe.

5.

Connect the pipe from the coolant pump to 

the coolant filter.

6.

Fit all coolant hoses connected to the coolant 

pump.

7.

Fit the poly-V-belt.

8.

Install the V-belt and check the V-belt 

tension. See "Inspection and adjustment".

9.

Fill the cooling system. See "Draining and 

filling".

M200596

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Removal and installation

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CF65/75/85 series

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5.2 REMOVAL AND INSTALLATION, COOLANT FILTER

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When the coolant is hot, there is an 

overpressure in the cooling system. 

Carefully remove the filler cap to 

release the overpressure.

Do not remove the filler cap when the 

engine is running.

Coolant is a toxic fluid. Contact with 

the skin should therefore be 

avoided.

In the event of contact with the skin: 

remove the liquid with paper or a 

cloth, wash with soap and water. If 

irritation persists, consult a doctor.

If swallowed: DO NOT induce 

vomiting. Rinse mouth, drink two 

glasses of water and consult a 

doctor.

In the event of inhalation: get fresh 

air and rest.

In order to avoid damaging the 

cylinder block, do not top up a warm 

engine with coolant.

Removing the coolant filter
1.

Place a tray beneath the coolant filter to 

collect any escaping coolant.

2.

Remove the filler cap from the expansion 

tank.

3.

Turn the shut-off valve (1) clockwise to the 

"C" position.

4.

Remove the coolant filter by turning it 

counter-clockwise.

Installing the coolant filter
1.

Clean the sealing face of the coolant filter. 

2.

Apply a small amount of coolant to the 

sealing ring of the coolant filter.

3.

Fit the coolant filter so that the sealing ring 

makes contact. Then tighten the filter by 

hand ½ to ¾ of a turn.

4.

Turn shut-off valve (1) anti-clockwise to the 

"O" position.

5.

Fit the filler cap on the expansion tank.

6.

Run the engine and check that the coolant 

filter seals correctly.

7.

Check the coolant level.

O

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M200372

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Removal and installation

PE ENGINE COOLING SYSTEM

CF65/75/85 series

2

6

5.3 REMOVAL AND INSTALLATION, THERMOSTAT

Removing the thermostat
1.

Drain the coolant. See "Draining and filling".

2.

Remove the hose between the thermostat 

housing and the radiator.

3.

Remove the thermostat housing attachment 

bolts.

4.

Remove the thermostat housing and the 

connecting piece from the coolant pump.

5.

Remove the O-ring (A) from the thermostat 

housing.

6.

Remove the thermostat.

Removing the thermostat oil seal
1.

Remove the oil seal (B) from the thermostat 

housing, using a commercially available 

internal puller.

Removing the thermostat seat
1.

Remove the thermostat seat (C) at the 

bottom of the thermostat housing, using a 

commercially available internal puller.

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Removal and installation

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Installing the thermostat seat

1.

Apply locking compound to the thermostat 

seat (C) and fit it in the thermostat housing 

using the special tool (DAF no. 1310456). 

See "Technical data".

Installing the thermostat oil seal
1.

Fit the thermostat seal (B) in the thermostat 

housing using the special tool 

(DAF no. 1310456).

Installing the thermostat
1.

Fit the thermostat in the thermostat housing.

2.

Fit the O-ring (A) in the thermostat housing.

3.

Fit new O-rings to the connection piece from 

the thermostat housing to the coolant pump, 

and fit the connection piece in the thermostat 

housing.

4.

Fit the thermostat housing onto the coolant 

pipe.

5.

Fit the thermostat housing attachment bolts. 

Tighten the attachment bolts to the specified 

torque. See "Technical data".

6.

Fit the hose between the thermostat housing 

and the radiator.

7.

Fill the cooling system. See "Draining and 

filling".

M200742

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