HD1057 Hydraulics - main applications: CATERPILLAR 200 (Kettenbagger / Crawler Excavators), 600 (Schürfzüge / Scrapers), 700-Series (Muldenkipper / Dumper / Mining Trucks), 900 (Laderaupen / Track Loaders), 900 (Radlader / Wheel Loaders), D3 (Planierraupen / Bulldozers), D4 (Planierraupen / Bu