โข Even when all coolant in the crankcase has been drained out, approximately 0.5 dm3 {0.5 L} of coolant remains in the EGR cooler. Before removing the EGR cooler, make ready a container to catch the coolant.
Installation sequence
Follow the removal sequence in reverse.
Inspection procedure
Inspection: Air leakage of EGR cooler
โข Perform the following inspection. If any abnormality is found, replace the exhaust gas recirculation cooler.
(1) Exhaust gas passage side
โข Fit a cover over the exhaust gas outlet of the exhaust gas recirculation cooler, and connect a hose to the exhaust gas inlet.
Then, submerge the exhaust gas recirculation cooler in a container of water. Make sure the coolant passage is full of water.
โข Apply specified air pressure through the hose. Check that air does not leak from any part of the exhaust gas recirculation cooler.
(2) Coolant passage side
โข Fit covers over the exhaust gas recirculation coolerโs exhaust gas inlet, exhaust gas outlet, and coolant outlet, and connect a hose to the coolant inlet. Then, submerge the exhaust gas recirculation cooler in a container of water.
โข Apply specified air pressure through the hose. Check that air does not leak from any part of the exhaust gas recirculation cooler.
