SECTION 7 MAINTENANCE AND SERVICING
Form 169000 / 169040
119
Revision D
7.7.2.5
Changing Hydraulic Oil Filter
NOTE
Change hydraulic oil filter after the first
100 hours operation, and every 250
hours thereafter.
a. Clean around filter head (C).
b. Remove filter (D), and clean gasket surface of
the filter head.
c. Apply a thin film of clean oil to the gasket on the
new filter.
d. Install new filter. Turn filter onto the mount until
the gasket contacts the filter head. Tighten the
filter an additional 1/2 to 3/4 turn by hand.
IMPORTANT
Do not use a filter wrench to install the
filter. Over-tightening can damage gasket
and filter.
7.7.2.6
Pressure Relief Valve
A possible cause of poor cutting performance
and/or excessive heating of hydraulic oil is low
relief pressure.
The relief valve (E) is factory-set at 4000 psi
(27.6 MPa). See your Dealer for adjustment or
service. A pressure gauge can be installed at
the gauge port (F) as shown above.
7.7.3 Hoses and Lines
Check hydraulic hoses and lines daily for signs
of leaks.
WARNING
Avoid high-pressure
fluids. Escaping fluid
can penetrate the skin
causing serious injury.
Relieve pressure before
disconnecting hydraulic lines.
Tighten all connections before applying
pressure. Keep hands and body away from
pin- holes and nozzles which eject fluids
under high pressure.
If ANY fluid is injected
into the skin, it must
be surgically removed
within a few hours by
a doctor familiar with
this type of injury or
gangrene may result.
Use a piece of
cardboard or paper to
search for leaks.
IMPORTANT
Keep hydraulic coupler tips and
connectors clean. Dust, dirt, water and
foreign material are the major causes of
hydraulic system damage.
DO NOT attempt to service hydraulic
system in the field. Precision fits require
WHITE ROOM CARE during overhaul.
C
D
E
F