Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Land Rover Discovery (2009–2016) Service Manual / Powertrain / Engine / Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

GENERAL EQUIPMENT

Refractometer / Hydrometer

CHECK

CAUTIONS:

  • The engine cooling system must be maintained with the correct concentration and type of anti-freeze solution to prevent corrosion and frost damage.
  • Engine coolant will damage the paint finished surfaces. If spilt, immediately remove the coolant and clean the area with water.
  • Never remove the coolant expansion tank cap under any circumstances while the engine is operating.

NOTES:

  • This procedure contains illustrations showing certain components removed to provide extra clarity.
  • This procedure contains some variation in the illustrations depending on the vehicle specification, but the essential information is always correct.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Raise the cover plate.

General Equipment: Refractometer / Hydrometer

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Clean the prism surface with a soft cloth.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Put 2 drops of pure distilled water on the prism surface

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Lower the cover plate.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Observe the shadow line on the scale.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

If required, use the adjustment screw to align the shadow line as shown.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Raise the cover plate.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Clean the prism surface with a soft cloth.

WARNING:

Release the cooling system pressure by slowly turning the coolant expansion tank cap a quarter of a turn. Cover the expansion tank cap with a thick cloth to prevent the possibility of scalding.

CAUTIONS:

  • Be prepared to collect escaping coolant.
  • Since injury such as scalding could be caused by escaping steam or coolant, make sure the vehicle cooling system is cool prior to carrying out this procedure.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Remove the coolant expansion tank cap.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Use the pipette to extract a coolant sample.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Raise the cover plate.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Put 2 drops of coolant on the prism surface.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Lower the cover plate.

NOTE:

50% coolant concentration mix provides a freeze point of -37ºC.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Observe the shadow line on the scale.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Raise the cover plate.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

Clean the prism surface with a soft cloth.

Engine Cooling - Ingenium i4 2.0l Diesel Cooling System Concentration Check (G2154751) / General Procedures

  1. If the coolant concentration mix is at 50%, proceed to Step 20.
  2. If the coolant concentration mix is below 50%, proceed to Step 18.
  3. If the coolant concentration mix is below 50%, proceed to Step 19.

NOTE:

Coolant concentration mix % must divided by 100. 50% would be calculated as 0.5

  1. If the coolant concentration mix is below 50%, the following calculation steps must be followed.
  2. Step 1. Multiply the required coolant concentration mix % by the cooling system capacity.
  3. Step 2. Multiply the current coolant concentration mix % by the cooling system capacity.
  4. Step 3. Subtract the total of step 1 by total of step 2.
  5. Step 4. Subtract the current coolant concentration mix % from 1.
  6. Step 5. Divide the total of step 3 by the total of step 4.
  7. Drain the coolant quantity given by the calculations and replace with concentrated antifreeze.
  8. Proceed to Step 20.

NOTE:

Coolant concentration mix % must divided by 100. 50% would be calculated as 0.5

  1. If the coolant concentration mix is above 50%, the following calculation steps must be followed.
  2. Step 1. Multiply the current coolant concentration mix % by the cooling system capacity.
  3. Step 2. Multiply the required coolant concentration mix % by the cooling system capacity.
  4. Step 3. Subtract the total of step 1 by total of step 2.
  5. Step 5. Divide the total of step 3 by the current coolant concentration mix %.
  6. Drain the coolant quantity given by the calculations and replace with distilled water.

CAUTION:

Correct installation of the coolant expansion tank cap can be obtained by tightening the cap until 3 audible clicks are heard.

Install the coolant expansion tank pressure cap.

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