Car Service — Radiator (Nissan X-Trail T31)

Checking the radiator cap

• Check the radiator cap valve seat.

- Check to see if the valve seat is swollen to the point that the plunger edge is not visible when viewed vertically from above.

- Make sure that the valve seat is free of dirt and damage.

• Pull the vacuum valve to open it and make sure it closes completely when released.

- Make sure that the radiator cap vacuum valve seat is free of dirt and damage.

- Make sure that there are no abnormalities when opening and closing the vacuum valve.

• Check the radiator cap release pressure.

Standard and limit. See below. "Technical data and specifications".



When connecting the radiator cap to the pump (suitable special tool) (A) and the adapter (special tool) (B) Apply engine coolant to the seal.

• If the vacuum valve shows any abnormalities in the three points above, replace the radiator cap.

Caution: Before replacing the radiator cap, thoroughly wipe the radiator filler neck and remove any waxy deposits or foreign particles.

Radiator check

• Check if the radiator is clogged with dirt. If necessary, clean the radiator as follows:

Attention:

• Do not bend or damage the radiator fins.
• When cleaning the radiator without removing it from the vehicle, remove all adjacent parts, such as the radiator fan, radiator shroud, and horns. To prevent water from getting in, wrap the wiring and connectors with protective tape.

1. Water the radiator core from the back side with water from a hose vertically downwards.

Information copied from the portal (nissanbook)

2. Again, pour water over the entire surface of the radiator core once per minute.

3. Stop watering if dirty water no longer flows from the radiator.

4. Blow air through the radiator core from the back side vertically downwards.

• Apply compressed air at a pressure below 490 kPa (5 kg/cm²) and from a distance of more than 30 cm.

5. Blow air over the entire surface of the radiator core again once per minute until no more water comes out.