Infiniti F50. Manual

Infiniti F50. Manual - part 289

THERMOSTAT AND WATER CONTROL VALVE

CO-25

Disconnect fuel injector harness, and remove thermostat housing, water outlet pipe, rear water outlet and
heater pipe (between left and right banks).

INSPECTION AFTER REMOVAL

●

Place a thread so that it is caught in the valves of the thermostat
and water control valve. Immerse fully in a container filled with
water. Heat while stirring. (The example in the figure shows the
thermostat.)

●

The valve opening temperature is the temperature at which the
valve opens and falls from the thread.

●

Continue heating. Check the full-open lift amount.

NOTE:
The full-open lift amount standard temperature for the water
control valve is the reference value.

●

After checking the full-open lift amount, lower the water temper-
ature and check the valve closing temperature.

Standard values

INSTALLATION

Install in the reverse order of removal.
Installation of thermostat and water control valve

●

Install the thermostat and water control valve with the whole cir-
cumference of each flange part fit securely inside the rubber
ring. (The example in the figure shows the thermostat.)

●

Install the thermostat with the jiggle-valve facing upwards. (The
position deviation may be within the range of

)

●

Install the water control valve with the up-mark facing up and the
frame center part facing upwards. (The position deviation may
be within the range of

)

Installation of water outlet pipe and heater pipe
First apply a neutral detergent to the O-rings, then quickly insert the insertion parts of the water outlet pipe and
heater pipe into the installation holes.

SLC252B

Thermostat

Water control valve

Valve opening temperature

80 - 84

C (176 - 183

93.5 - 96.5

C (200 - 206

Full-open lift amount

More than 10 mm/ 95

(0.39 in/ 203

More than 8 mm/ 108

(0.315 in/ 226

Valve closing temperature

C (171

F) or higher

C (194

F) or higher

PBIC0157E

PBIC0158E

CO-26

SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00030

Standard and Limit

EBS003Q8

CAPACITY

THERMOSTAT

WATER CONTROL VALVE

RADIATOR

Unit: kPa (kg/cm

, psi)

Tightening Torque

EBS002NI

Unit: N·m (kg-m, ft-lb)

Unit: N·m (kg-m, in-lb)*

Engine coolant capacity [With reservoir tank (MAX level)]

Approximately 9.8

(10-3/8 US qt, 8-5/8 Imp qt)

Reservoir tank

0.8

(7/8 US qt, 3/4 lmp qt)

Cooling fan fluid capacity

777 m

(26.3 US floz, 27.4 Imp floz)

Valve opening temperature

80 - 84

C (176 - 183

Valve lift

More than 10 mm/95

C (0.39 in/203

Valve closing temperature

C (171

F) or higher

Valve opening temperature

93.5 - 96.5

C (200 - 206

Valve lift

More than 8 mm/108

C (0.315 in/226

Valve closing temperature

C (194

F) or higher

Cap relief pressure

Standard

78 - 98 (0.8 - 1.0, 11 - 14)

Limit

59 (0.6, 9)

Leakage test pressure

157 (1.6, 23)

Cylinder block drain plug

14.7 - 24.5 (1.5 - 2.5, 11 - 18)

Radiator mounting bracket
Radiator drain plug
Engine coolant temperature sensor
Cooling fan shroud
Reservoir tank bracket

3.8 - 4.5 (0.39 - 0.46, 34 - 39)*

0.78 - 1.56 (0.08 - 0.16, 7 - 14)*

4.9 - 9.8 (0.5 - 1.0, 44 - 86)*

3.8 - 4.5 (0.39 - 0.46, 34 - 39)*
3.8 - 4.5 (0.39 - 0.46, 34 - 39)*

Oil cooler securing nut (A/T model only)

8 - 12 (0.8 - 1.2, 69 - 104)*

Fan
Fan motor
Cooling fan fluid cooler
Fluid hose
Reservoir tank (Cooling fan pump)

7.8 - 11.8 (0.80 - 1.2, 70 - 104)*

3.9 - 4.9 (0.40 - 0.50, 35 - 43)*
3.0 - 3.9 (0.31 - 0.40, 27 - 34)*

14.7 - 17.7 (1.5 - 1.8, 11 - 13)

15.7 - 19.6 (1.6 - 1.9, 12 - 14)

Water pump pulley
Water pump

7.2 - 9.2 (0.73 - 0.94, 64 - 81)*

24.5 - 31.4 (2.5 - 3.2, 18 - 23)

Water inlet
Thermostat housing
Rear water outlet
Water connector (Water control valve cover)
Water suction pipe
Heater pipe

16.7 - 22.6 (1.7 - 2.3, 13 - 16)
16.7 - 22.6 (1.7 - 2.3, 13 - 16)
16.7 - 22.6 (1.7 - 2.3, 13 - 16)
16.7 - 22.6 (1.7 - 2.3, 13 - 16)
16.7 - 22.6 (1.7 - 2.3, 13 - 16)

5.4 - 7.3 (0.55 - 0.75, 48 - 65)*