Workshop Manuals Factory service & repair Land Rover
01 02 AMENDMENT INSTRUCTION SHEET03 INTRODUCTION04 GENERAL SPECIFICATION DATA05 ENGINE TUNING DATA06 GENERAL FITTING REMINDERS07 MAINTENANCE08 ENGINE09 FUEL SYSTEM10 COOLING SYSTEM11 MANIFOLD AND EXHAUST SYSTEM12 CLUTCH13 MANUAL GEARBOX14 TRANSFER GEARBOX15 PROPELLER SHAFTS16 REAR AXLE AND FINAL DRIVE17 FRONT AXLE AND FINAL DRIVE18 STEERING19 FRONT SUSPENSION20 REAR SUSPENSION21 BRAKES22 WHEELS AND TYRES23 CHASSIS AND BODY24 HEATING AND VENTILATION25 AIR CONDITIONING26 WIPERS AND WASHERS27 ELECTRICAL28 INSTRUMENTS
Land Rover 300Tdi Defender10 · COOLING SYSTEM
10 · Engine

ENGINE (COOLANT) COOLING

Make
Land Rover
Model
Defender 300Tdi Defender
Section
ENGINE (COOLANT) COOLING
COOLING SYSTEMENGINE (COOLANT) COOLING
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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

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