Caution: The coolant contains ethylene glycol and an anti-corrosion agent. Since the radiator, cylinder head and coolant pump housing are cast from aluminum alloy, periodic coolant replacement is necessary to prevent corrosion of these parts. In addition, it is not allowed to replace the coolant with clean water, even in summer.
Caution: DEX-COOL® brand coolant is recommended for the cooling system. When using a concentrate, it is recommended to mix with distilled water in a 50/50 ratio for best results.
1. Park the vehicle on a level surface and apply the parking brake.
2. Wait for the engine to cool down.
3. Drain the liquid from the radiator of the cooling system.
- A) Slowly unscrew the expansion tank cap. If a hiss is heard when unscrewing, release pressure by leaving the cap not completely unscrewed. Remove the cover after a while.
- b) Drain the coolant from the radiator into a suitable container by opening the radiator drain cock.
Note: The drain cock is located in the bottom left corner of the radiator. Install sufficient capacity (about 12 liters) under the drain valve.
Note: Check that a drain tube is installed on the drain cock. If necessary, install a drain tube or hose into an empty drain pan. - If possible, use a clean container.
- V) Check the condition of the coolant for oil stains and uniform color.
- G) Close the radiator drain cock.
4. Drain the engine coolant.
- A) Remove the drain plugs on the left and right sides of the cylinder block and drain the coolant from the engine.
- b) If installed, remove the coolant heater (see chapter "Cooling system").
- V) If necessary, after draining the coolant, fill the radiator with clean distilled water to flush the cooling system.
- G) Apply sealant to the drain plug threads of the cylinder block and tighten to the specified torque. Tightening torque 60 Nm.
- d) Securely tighten the radiator drain plug.
- e) If removed, install a coolant heater.
5. Filling the coolant.
- A) Prepare the required amount of coolant. When using DEX-COOL® brand concentrate, mix it with distilled water in a 50/50 ratio. When using concentrates from other companies, mix in the proportion recommended in the instructions for use of this concentrate.
- b) Slowly pour coolant through the expansion tank until the level reaches the mark "FULL COLD".
- The range of permissible concentrations of antifreeze in the coolant is 30-60%
- Filling volume:
- Release models up to 2007:
- engine 5.3 l models with front air conditioning - 14.4 l
- engine 5.3 l models with front and rear air conditioning - 15.8 l
- engine 6.0 l, with a fan drive from the crankshaft of the engine - 15.3 l
- engine 6.0 l, with electric cooling fan - 15.9 l
- Release models since 2007:
- engine 5.3 l - 17.3 l
- engine 6.2 l - 16.7 l
Attention:
- If the antifreeze concentration is below 30%, then the anti-corrosion properties of the coolant are significantly reduced.
- In addition, if the concentration is more than 60%, then the crystallization temperature of antifreeze rises (heat exchange efficiency decreases), adversely affecting the engine. Therefore, make sure that the antifreeze concentration level is within the specified range.
- Use a proprietary ethylene glycol based anti-corrosion coolant and mix it with demineralized or distilled water according to the manufacturer's instructions.
- Do not mix different brands of antifreeze.
- Do not use alcohol antifreeze.
6. Without closing the cap of the expansion tank, start the engine and let it idle until you feel that the upper radiator hose becomes warm.
7. Slowly tighten the expansion tank cap.
8. With an interval of 30 seconds, set the idle speed to about 3000 rpm until the coolant temperature reaches 99°C and the thermostat opens.
9. After opening the thermostat, press the accelerator pedal several times, increasing the engine speed, and then turn off the engine. Check for leaks from drain plugs.
10. Allow the engine to cool slightly and, taking precautions, remove the expansion tank cap.
11. Check the coolant level. If necessary, add coolant above the mark "FULL COLD" by 13 mm. _
12. Carry out the operations in steps 7-11 until the coolant level becomes constant (those. above the mark "FULL COLD" 13 mm on a warm engine).