Discovery II
GENERAL DATA
04-9
Cooling system - Td5
Type
Pressurised, spill return partial flow, thermostatically controlled
Cooling fans
11 blade axial flow on viscous coupling and 11 blade axial flow electric
Electric cooling fan switching points:
For A/C system:
⇒
On
When vehicle speed is 50 mph (80 km/h) or less and ambient
temperature is 28
°
C (82
°
F) or more
⇒
Off
When vehicle speed increases to 62.5 mph (100 km/h) or ambient
temperature decreases to 25
°
C (77
°
F)
For engine cooling during normal running:
⇒
On
110
°
C (230
°
F)
⇒
Off
105
°
C (221
°
F)
For engine cooling at ignition off (to counteract heat
soak):
⇒
On
If, within 10 seconds of ignition off, engine coolant temperature is 105
°
C (221
°
F) or more
⇒
Off
After 10 minutes or if engine coolant temperature decreases to 100
°
C
(212
°
F)
Coolant pump
Centrifugal impeller, belt driven from crankshaft
Thermostat
Waxstat with pressure relief valve
Thermostat opening temperature:
⇒
Initial opening
82
°
C (179
°
F)
⇒
Fully open
96
°
C (204
°
F)
Expansion tank cap relief valve - system operating
pressure
1.4 bar (20.3 lbf.in
2
)
Fuel cooler thermostat opening temperature
82
°
C (179
°
F)
