DAF CF65, CF75, CF85 Series . Manual — part 181

©

200351

8-1

XE-engine cooling system

TECHNICAL DATA

ΧΦ65/75/85 series

2

0

8. XE-ENGINE COOLING SYSTEM

8.1 GENERAL

Thermostat

Coolant pump

Header tank pressure cap

Pressure testing the cooling system

Viscous fan clutch

Thermostat opening temperatures:
standard
- thermostat opens at

approx. 87

C

- thermostat open at least 12 mm at

approx. 99

C

with intarder and/or tropical cooling:
- thermostat opens at

approx. 83

C

- thermostat open at least 12 mm at

approx. 95

C

Thermostat seat

Loctite 638

Maximum radial play

0.16 - 0.20 mm

Pressure relief valve opening pressure

1 - 1.2 bar

Underpressure valve opening pressure

0.1 - 0.02 bar

Closed pressure cap position

Brand name (2) legible horizontally or 60

before

this position.

1

2

M201272

Closed pressure cap
position

Brand name (2)
legible horizontally or
60

before this

position.

Test pressure

0.7 - 0.9 bar

Permissible slip at maximum speed control

10%

Fan drive ( i ) transmission

1,207

TECHNICAL DATA

8-2

©

200351

XE-engine cooling system

0

ΧΦ65/75/85 series

2

8.2 TIGHTENING TORQUES

The tightening torques specified in this paragraph
are different from the standard tightening torques
cited in the overview of the standard tightening
torques. The other threaded connections not
specified must therefore be tightened to the
torque cited in the overview of standard
tightening torques.

When attachment bolts and nuts are replaced, it
is important - unless stated otherwise - that these
bolts and nuts are of exactly the same length and
property class as those removed.

Coolant pump

Coolant pipe

Thermostat housing

Radiator

Coolant hoses

M8 attachment bolts

30 Nm

M14 threaded coupling

35 Nm

M26

90 Nm

Attachment bolts

60 Nm

Coolant pipe threaded coupling

90 Nm

Coolant pipe plug

35 Nm

Engine coolant temperature sensor

20 Nm

Attachment bolts

30 Nm

Plug

35 Nm

Attachment nuts

70 Nm

Hose clamps

7 Nm

©

200351

8-3

XE-engine cooling system

TECHNICAL DATA

ΧΦ65/75/85 series

2

0

8.3 FILLING CAPACITIES

Cooling system capacity

approx. 47 litres

Cooling system capacity of vehicle with ZF
intarder

approx. 57 litres

TECHNICAL DATA

8-4

©

200351

XE-engine cooling system

0

ΧΦ65/75/85 series

2