300Tdi Defender Engine Cooling System
COOLING SYSTEM
1
DESCRIPTION AND OPERATION
ENGINE COOLING SYSTEM
Description
The complete cooling system of the 300Tdi engine
incorporates three independent functions:- Engine
(coolant) cooling; Turbo (charge air) intercooling;
Engine oil cooling.
The intercooler is a separate aluminium unit, located
on the LH side of the engine compartment adjacent to
the radiator, sharing the same upper and lower
mountings. For details of turbo intercooling
See
FUEL SYSTEM, Description and operation,
Operation . The oil cooler matrix is an integral part of
the radiator. Pre-formed pipes/hoses are used to link
the components within the separate systems as
shown below.
Engine cooling system
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. Bleed (purge) hose, thermostat housing
12. ’Y’ piece ejector
13. Expansion tank
14. Heater rail
15. Heater unit
16. Heater feed hose
17. Intercooler
18. Air cleaner
19. Air feed hose
20. Turbocharger
21. Charge air supply pipe/hose
22. Cooled charge air supply hose
23. Exhaust manifold
24. Engine oil cooler
25. Feed pipe, engine oil cooler
26. Return pipe, engine oil cooler
27. Oil filter
