Coolant: Service and Repair

COOLANT

Draining

WARNING: Do not remove expansion tank filler cap when engine is hot. The cooling system is pressurized and personal scalding could result.

Expansion Tank:

1. Remove expansion tank filler cap by slowly turning it anti-clockwise, pause to allow pressure to escape. Continue turning it in same direction and remove.

Radiator Filler Plug:

2. Remove radiator filler plug and O-ring to assist drainage.

Lower Radiator Hose:

3. Disconnect bottom hose from radiator. Drain coolant into a clean container. Reconnect bottom hose, re-tighten hose clamp.

NOTE: It is not possible to drain all coolant retained in heater system. Flush through system, after draining, by pouring clean water into the fill tower, with bottom hose disconnected and engine drain plugs removed.

Block Drain Plugs:

4. Remove engine drain plugs, one each side of cylinder block, beneath exhaust manifolds.
5. Drain coolant, refit and tighten plugs.
6. Pour correct solution of water and anti-freeze into expansion tank until radiator is full.
7. Start engine, run it until normal operating temperature is attained, topping up as necessary.
8. Refit radiator filler plug and O-ring, with new O-ring if required. Tighten to 6 Nm (53 in lb).
9. Fit expansion tank filler cap.
10. Allow engine to cool, check coolant level. Finally top up expansion tank until level reaches seam of expansion tank.