Service Manual

1.1311.14
1.1311.15
Productivity Series
To properly troubleshoot many hydraulic
systems, it is necessary to measure the
pressure and or flow at various points in the
system. This can only be done by using the
proper test equipment.
Service and repair manuals will indicate
if there
are specific tests which can be performed on
a
specific hydraulic system. The amount of
pressure and or flow the system should be
generating will determine the size and type of
the equipment needed.
Inlet/Outlet Hose
Hoses are used to connect your test equipment'
into the system you are testing. The hoses
should be rated higher than any pressure that
may be reached during testing. They should
also be long enough to allow for easy reading of
the test equipment. Adapter fittings may
be
needed to attach to different systems.
Pressure Gauge
As you might expect, pressure gauges are used
to measure the pressures experienced during
certain phases of circuit operation.
A good quality pressure gauge is usually liquid
filled to stabilize the needle. Low pressure
gauges for hydraulic testing will read from
0 to
1000 psi (70.3 kg/sq cm). A high pressure
gauge normally allows for testing between
0 and
5000 psi (351.3 kg/sq cm).
30