--Iocated on the inlet side of the high pressure pump to return
hydraulic fluid to the return system when/if the boost pump pressure
exceeds the high pressure pump setting.
--located across the inlet and outlet ports of the high pressure filter,
illuminates a red warning light "H. P. FILTER CLOGGED" on the in-
strument control paneI.
--located on the back of the control panel, illuminates a red warning
light "L.P. FILTER CLOGGED" on the instrument control panel.
--located before the high pressure pump, will shut off the gasoline
engine when the hydraulic fluid temperature exceeds 160°F.