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Home >> Land Rover >> 2018 >> Range Rover Velar Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 24 (Engine Cooling - V6 S/C 3.0L Petrol -- Range Rover Velar/L560) >> Engine Cooling - V6 S/C 3.0L Petrol >> General Procedures >> Cooling System Pressure Test (G1898875) >> Check

Cooling System Pressure Test (G1898875): Check

WARNING: This page is about a different variant/trim than selected.
WARNING: Injury such as scalding could be caused by escaping steam or coolant, allow the vehicle cooling system to cool before completing this procedure.
CAUTION:
  • Coolant will damage the paint finished surfaces. If spilt, immediately remove the coolant and clean the area with water.
  • Make sure that the mating faces are clean and free of foreign material.
NOTE:
  • The following procedure will enable the cooling system to be pressure tested for condition and leaks. Step 2 will check the expansion tank cap seal and the cap for leaks. Step 3 will check the entire cooling system.
  • This procedure contains some variation in the illustrations depending on the vehicle specification, but the essential information is always correct.
  • This procedure contains illustrations showing certain components removed to provide extra clarity.
  1. Visually check the cooling system for signs of leaks and distorted hoses. Make sure all the cooling system components are correctly installed. Replace any damaged or faulty components.
  2. G13631754Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    • Remove the coolant expansion tank cap.
    • Note the pressure printed on the coolant expansion tank cap.
    • Assemble the pressure tester and special tool JLR-303-1649 and install on the coolant expansion tank cap as illustrated.
    • Slowly apply the noted pressure to the coolant expansion tank cap and check if it holds the pressure. If the noted pressure is reached, the pressure should be released through the coolant expansion tank cap.
    • If the coolant expansion tank cap fails this test, replace the component.
    • Disassemble the pressure tester, special tool JLR-303-1649 and the coolant expansion tank cap assembly.

      Special Tool(s): JLR-303-1649 

      General Equipment: Cooling system pressure tester 

  3. CAUTION: Do not exceed 1.0 bar (15 psi) when pressurizing the cooling system.
    NOTE: If the pressure continues to drop after the initial tolerance, there cooling system needs to be checked for leaks.
    G13631755Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC
    • Use the pressure tester and special tool JLR-303-1649 to slowly pressurize the cooling system until the gauge reads 1 bar (15 psi).
    • No significant drop in pressure should be noted on the pressure tester gauge. If after 5 minutes the pressure significantly drops, inspect the cooling system for leaks. A pressure drop of 0.15 bar (1 psi) in the first minute is considered normal operation.

      Special Tool(s): JLR-303-1649 

      General Equipment: Cooling system pressure tester 

  4. G13631756Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

    Release the pressure and remove the pressure tester and special tool JLR-303-1649.

    Special Tool(s): JLR-303-1649 

    General Equipment: Cooling system pressure tester 

  5. CAUTION: Correct installation of the coolant expansion tank cap can be obtained by tightening the cap until 3 audible clicks are heard.
    • Check and top up the coolant if required.
    • Install the cooling system expansion tank cap.
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