Cat 321d overheating?

Got called out to a piece of equipment and complaint was engine and hydraulics overheating. Story on this machine is they got it stuck in sand and water and engulfed the whole engine bay with water sand mix ( it was a mess). The sand was so bad that it ate the drive belts clean off, it got hot enough to derate it but we got it out finally. Got it back to shop pulled counter weight and side panels to get sand out did not remove cooler but was able to pry back fan shroud to get access to...

Cat 321d overheating?

Cat 321d overheating?