H837 Hydraulics - main applications: CATERPILLAR 200 (Kettenbagger / Crawler Excavators), 500 (Rohrleger / Pipelayers), 500-Serie (Forstmaschinen / Forest Machines), 900 (Laderaupen / Track Loaders), 900 (Radlader / Wheel Loaders), D5 (Planierraupen / Bulldozers), D6 (Planierraupen / Bulldoz