HYDRAULIC SYSTEM - CONTINUED
HYDRAULIC OIL FILTER RELIEF VALVE
Fed low pressure hydraulic fluid returning through oil lines from loader control valve, jaw direct linear valve, and
backhoe control valve; and from hydraulic impactor if installed.
Surge relief valve returns hydraulic fluid through return oil line to transmission case sump to protect hydraulic
system when pressure is too high.
Filter relief valve returns hydraulic fluid through return oil line to transmission case sump when fluid is heavy during
warm-up or if filter element becomes clogged.
Routes return hydraulic fluid through hydraulic oil filter and out through low pressure oil lines to hydraulic pump.
HYDRAULIC OIL FILTER
Cleans return hydraulic fluid routed through it by hydraulic oil filter relief valve.
HYDRAULIC OIL FILTER RELIEF VALVE-TO-CLUTCH CONTROL VALVE ADAPTER OIL LINE
Routes return hydraulic fluid from hydraulic oil filter relief valve, directly to clutch control valve-to-hydraulic pump
inlet oil line.
Protects hydraulic pump from cavitation damage.
HYDRAULIC OIL FILTER RELIEF VALVE-TO-TRANSMISSION CASE OIL HOSE (NOT SHOWN)
Routes excess return hydraulic fluid from hydraulic oil filter relief valve to transmission strainer element (filter
screen) in transmission case.