Changing Hydraulic Oil Filter; Pressure Relief Valve; Hoses And Lines - MacDon A30-S Operator's Manual

7.7.2.5

Changing Hydraulic Oil Filter

Change hydraulic oil filter after the first
100 hours operation and every 250 hours
thereafter.
C
D
a. Clean around the filter head (C).
b. Remove the filter (D) and clean the 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 the 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.
Form # 169000
MAINTENANCE/SERVICE
NOTE
E
F
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.
pressure
disconnecting
hydraulic
Tighten
connections before applying pressure. Keep
hands and body away from pin- holes and
nozzles
eject fluids under
high pressure.
If ANY fluid
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.
Keep
connectors clean. Dust, dirt, water and
foreign material are the major causes of
hydraulic
attempt to service hydraulic system in the
field. Precision fits require WHITE ROOM
CARE during overhaul.
103
Relieve
before
lines.
all
which
is
IMPORTANT
hydraulic coupler
system damage. DO
Model Year - 2009
tips and
NOT