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N9T** Coolant Bleeding Procedure


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Steps from the European manual:

REFILLING

1. Hang the expansion vessel (overflow bottle) as high as possible under the bonnet.

2. Remove the bleed screw

3. Fill through the radiator until the coolant runs through the bleed screw orifice.

4. Refit and tighten the bleed screw

5. Continue filling through the expansion vessel until coolant is level with the filler orifice

6. Refit the cap

7. Continue filling to bring the level in the expansion vessel between 30 and 40 mm (1 and 1,5 in) above the MAXI mark

8. Refit the expansion vessel cap (tighten with slip joint pliers).

IMPORTANT - Do not run the engine with the bleed screw or cap open.

9. Warm the engine and wait 5 minutes after the first fan operation.

10. Accelerate several times to low speed to aid bleeding.

11. Stop the engine.

NOTE - If, after running, the level in the expansion vessel rises abnormally (up to 3 cm (1 in) below the top of the vessel) check the system for air locks and repeat the bleeding procedure.

After complete cooling:

- the level in the expansion vessel should be near the MAXI mark.

- a level slightly above the MAXI mark is normal.

- top up to the MAXI mark if necessary.

Steps from the US manual:

REFILLING:

System capacity: 9.5 liters +- 0.5 liters, (2.5 U.S. gals. +- 0.13 )

1. Suspend the jar as high as possible onto the hood.

2. Place the temperature control lever on the high side (red mark).

3. Remove the thermocontact (see http://www.turbo505.com/my_87/components/water_tank_sending_units_refurbished.jpg)

4. Fill the radiator until the coolant runs out through the thermocontact opening.

5. Reinstall the thermocontact.

6. Continue filling the radiator through the expansion jar until the level stabilizes flush with the filler neck of the radiator.

7. Reinstall the radiator filler cap.

8. Continue to fill the system until the expansion jar reaches 30 to 40mm above the MAXI reference mark.

9. Reinstall the expansion jar cap.

BLEEDING

Make sure:

-that all drain plugs are in place and properly tightened

-the thermocontact is properly tightened.

IMPORTANT - DO NOT RUN THE ENGINE WITH THE THERMOCONTACT OR DRAIN PLUGS REMOVED

10. Warm the engine, and wait 5 minutes after first engagement of the declutchable fan.

11. Rev up engine a few times to moderate rpm to facilitate bleeding the cooling system.

12. Stop the engine (after return to idle).

13. Reinstall the expansion jar in its support.

After a total cool down:

- the level in the expansion jar must be close to the MAXI mark,

- a slight overrun of the MAXI mark is normal,

- if necessary, top up the level up to the MAXI mark if it is needed.

I guess the "bleed screw" in the EU version is just a screw in plug that occupies the same orifice that the 60 degree thermocontact uses on the LU cars.

Good luck,

K o l l

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