910193 - Hydraulic Impact Wrench
Phone: (262) 637-9681
4.2021 Rev 2.1
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11
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Hose Requirements
Check hydraulic hosed for cracks, leakage and damage. If the hoses or couplers show any of these wear
characteristics, replace them before operating the tool.
Never
attempt to locate leaks with your hands,
personal injury may occur from pressure system.
It is not often necessary or advisable to use long hoses. All hoses must have an oil resistant inner surface
and an abrasion resistant outer surface. Each hose must have male pipe ends for most application.
Longer hoses can be used when necessary but can affect the operation of the tool due to resistance in
the hose.
If small diameter or long hoses are used, or if restrictive fittings are connected to the supply and return
ports, the pressure required to push the fluid through the system and back to the tank will be higher. This
will reduce tool power.
Important:
Oil should always flow from the male coupler through the female coupler.
Note:
The pressure increases in uncoupled hoses left in the sun. This may make them difficult to
connect. When possible after use, connect the free ends of the operating hoses together.
The recommended minimum hose diameter for the pressure line hose
is 1/2” inside diameter. The pressure line hose must have a minimum
working pressure rating of 2500 psi [17.3 MPa].
It is recommended that the hose diameter for the return line hose is
5/8” diameter. If possible should be greater than the pressure line
hose diameter.
These recommendations are intended to keep return line pressure
(back pressure) to a minimum acceptable level to ensure maximum
tool performance.
All hydraulic hose must meet or exceed specifications set forth by
SAE J517.