Here some pics of a Caterpillar 494-4832 aluminum radiator that we had in for a clean, repair & pressure test. The all aluminum radiator is for an 18M grader. The fins externally had a good amount of blockage from fluid leaking that allowed dirt & mud to build up within the fins. We initially cleaned the radiator internally & externally so we could get a good pressure test on it. After initial pressure testing we were able to identify what repairs were needed. After all necessary repairs were completed we gave the radiator a final pressure test to ensure it is leak free & ready for another round of service.
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