Drain and Refill Cooling System for 300Tdi Defender
COOLING SYSTEM
1
ADJUSTMENT
DRAIN AND REFILL COOLING SYSTEM
Service repair no - 26.10.01
Draining
WARNING: DO NOT remove caps or plugs
when the engine is hot. The cooling
system is pressurised and personal
scalding could result.
1. Remove expansion tank filler cap.
2. Position a clean container under radiator if
coolant is to be reused.
3. Disconnect radiator bottom hose and allow
coolant to drain.
NOTE: A chassis undertray may be fitted
on some vehicle derivatives to conform to
legal requirements. When under chassis
remove and refit procedures are required, it may
be necessary to remove the undertray and/or
integral access panels.
See CHASSIS AND BODY,
Repair, Front undertray or See CHASSIS AND
BODY, Repair, Rear undertray
4. When expansion tank has emptied remove
thermostat housing plug to assist drainage.
5. Similarly when coolant is below top of radiator,
remove radiator plug.
6. Fit radiator bottom hose and fully tighten hose
clip.
Refill
CAUTION: It is important that the correct
procedure is followed when refilling or
topping up the cooling system to avoid
trapping air in the system.
7. Fill cooling system with 50% - 50% of
water/anti-freeze mixture
See LUBRICANTS,
FLUIDS AND CAPACITIES, Information,
Recommended lubricants and fluids
8. Fill through expansion tank until radiator is full,
with level in expansion tank the same as
radiator.
NOTE: Care should be taken to avoid
excess coolant spillage.
9. Fit plastic plug in radiator.
10. Add a further 1 litre (1.76 pints) of coolant into
expansion tank and allow to settle.
11. Refit expansion tank cap and thermostat
housing plug.
12. Run engine at idle speed for 5 minutes.
13. Switch off engine and allow to cool.
14. Check that coolant in expansion tank is level
with top of indicator post. Top up if necessary.