Oil cooler, leakage test

(Removed from engine)

Special tools: 6662, 6033, 8199, 8200

1

Flush the coolant side of the oil cooler with water-soluble degreasing fluid. Wash the oil side of the cooler with degreasing solvent.

2

In order to discover any small leakages, the oil cooler must be the same temperature as the room temperature. To achieve this, flush the oil cooler with water which has the same temperature as the room until the cooler reaches the required temperature. Drain off all water from the cooler.

3

Fit leak detection equipment 6033 together with the orings and check that it seals correctly. Fit seal 8199 on one of the coolant connections and hose connection 8200 on the other. Make sure that they seals correctly.

4

Connect leak detection equipment 6662 to 6033. Note! Water must not enter the measurement hose.

5

Lower the oil cooler into the bath which contains water that has room temperature. The leakage test is to be carried out at 15, 100 and 250 kPa (2.2; 14.5 and 36.3 psi). Begin with 15 kPa and then continue with 100 and 250 kPa. Position the measurement hose approx. 2 cm (0.79") under the surface of the water.The test period for each test should last for at least one minute.

Air bubbles emerging from the measurement hose indicate internal leakage in the oil cooler. Air bubbles around the oil cooler indicate external leakage.

6

Lift up the oil cooler and remove the leak detection equipment.