Gorman-Rupp Pumps HSV6B31-HYD All serial numbers - Manual (Page 5)

HS AND HSV SERIES OM−03984
PAGE A − 2 SAFE-
TY
diately. Always use the correct type of
fuel.
If using a customer-installed power
source, do not use closed-center
valves. Return flow from the hydraulic
motor must be allowed to return directly
to the oil reservoir to enable the pump
impeller to gradually slow to a stop. Clo-
sed-center valves will block this flow,
causing damage to the hydraulic motor
and/or the pump seal.
Make sure hydraulic hose connections
are fully tightened. Hydraulic hoses are
equipped with check valves in each end to
prevent oil from escaping when
disconnected. Hose connections must be
tight to fully open these check valves.
Failure to tighten connections can cause
excessive hydraulic system pressure,
resulting in damage to the hydraulic motor
and/or other components.