Landoll 330A, Operator'S Manual

Page: 37 / 62

4-4 HYDRAULIC SYSTEM
4-4.1 General
a. Check the oil level of the tractor wet kit hy-
draulic tank weekly, or after any leakage. See
Table 4-1 for proper hydraulic oil. Check the
hydraulic oil level with hydraulic cylinders in
the retracted position. Disengage the hydrau-
lic pump.
b. Overfilling can cause hydraulic fluid overflow
during operation.
c. Hydraulic system pressure relief valves
should be set at 2500 PSI.
4-4.2 Hydraulic Engine Package
a. Check the hydraulic oil level weekly, or after
any leakage. See Table 4-1 for proper hy-
draulic oil. Check oil level with hydraulic cylin-
ders in the retracted position and with the en-
gine stopped.
b. Check hoses weekly for cracks or leaks. If a
valve or line leaks, it should be replaced im-
mediately.
c. Check the engine oil each time before us-
ing. Oil level should be maintained between
the “ADD” and “FULL” marks on the oil dip
stick.
d. Replace hydraulic filter with new filter at
least every 6 months or more often under ad-
verse conditions.
e. Use the fuel recommended for the engine
package installed on your semitrailer.
f. For further maintenance procedures and
proper lubrication specifications, please refer
to the engine owners manual that was sup-
plied with the hydraulic engine package.
4-5 ELECTRICAL SYSTEM
4-5.1 Maintenance of the electrical system
consists of inspection and minor servicing.
Any wire, connection or electrical component
showing signs of corrosion, wear, breakage
or unraveling must be repaired or replaced.
4-5.2 Frayed or unraveling wire must have the
defective section removed and replaced with
wire of the same color and gauge. Seal all
connections and insulate.
4-5.3 Corroded terminals must have the corro-
sion removed, source of corrosion neutral-
ized and the terminals resealed, protected,
and insulated.
4-5.4 Fuse or circuit breaker burn-out or
blow-out usually indicates an electrical
short-circuit, although a fuse can occasion-
ally fail from vibration. Insert a second fuse
or reset the breaker. If this fuse immediately
burns out or the breaker trips, locate the
cause of the electrical short and repair.
4-5.5 A light that repeatedly burns-out usually
indicates a loose connection, poor system
ground, or a malfunctioning voltage regula-
tor. Locate the source of the problem and re-
pair. System grounds must be grounded to
bare metal surfaces. Paint, grease, wax, and
other coatings act as insulators. Replace-
ment lamps must be equivalent to the factory
installed lamp.
4-9