FUSO 4M4 – EMISSION CONTROL – EXHAUST GAS RECIRCULATION VALVE, PIPE AND COOLER

• 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
• Perform the following inspection. If any abnormality is found, replace the exhaust gas recirculation cooler.
(1) Exhaust gas passage side
• 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.
• 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
• Fit covers over the exhaust gas recirculation cooler’s 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.
• Apply specified air pressure through the hose. Check that air does not leak from any part of the exhaust gas recirculation cooler.

 

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