ENGINE (COOLANT) COOLING
- Make
- Land Rover
- Model
- Defender 300Tdi Defender
- Section
- ENGINE (COOLANT) COOLING
26
COOLING SYSTEM
2
DESCRIPTION AND OPERATION
ENGINE (COOLANT) COOLING
Description
The 300Tdi engine uses a pressurised cooling system
and cross flow radiator which is supplied with coolant
from an expansion tank mounted on the RH side of
the engine compartment. A belt driven centrifugal
water pump, fitted to an auxiliary mounting assembly,
pumps coolant to the engine crankcase, cylinder head
and vehicle heater unit.
An eleven bladed fan, incorporating a viscous
coupling, is driven by an independent pulley secured
to the front cover plate. The thermostat housing,
bolted to the front of the cylinder head, is fitted with a
vent valve that purges excessive air pressure and
coolant back to the expansion tank.
Engine coolant circulation (engine warm - thermostat open).
1. Radiator
2. Thermostat/housing
3. Radiator bottom hose
4. Viscous fan
5. Water pump
6. Radiator top hose
7. Heater return hose
8. Coolant supply hose
9. By-pass hose
10. Radiator bleed (purge) hose
11. Thermostat housing bleed (purge) hose
12. ’Y’ piece ejector
13. Expansion tank
14. Heater rail
15. Heater unit
16. Heater feed hose
Parts & tools for this job Staging For Land Rover Defender
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