OPTIMIZER
TM
26
1.4 HYDRAULIC SYSTEM
MAINTENANCE
1.4.1 HYDRAULIC SYSTEM GENERAL
INSPECTION
HYDRAULIC SYSTEM GENERAL
INSPECTION PROCEDURE
• For new equipment, change the
return element filter after 50 hours
of use, and every 500 hours
thereafter. See hydraulic filter
replacement procedure section
1.4.9;
• Clean the strainer inside the
reservoir after the first 50 hours of
use and yearly thereafter (Figure
#1.16). See hydraulic strainer
cleaning procedure, sec.1.4.10;
• When maintenance is carried out,
protect the hoses from any dirt that
would eventually get into the oil;
• Periodically inspect and adjust the
oil pressure in the hydraulic system
as follows: 2500 PSI +/- 25 PSI@1500
RPM (2300PSI@700 RPM; idle
speed);
• Frequently inspect the hydraulic
lines and connections for leaks,
correct if necessary;
• The suction valve on the reservoir
must be fully open (Figure #1.1)
before starting the engine;
Filter/
breather
Filler
cap
FIGURE #1.16
HYDRAULIC TANK PARTS
Filter
1.4.2 MAIN RELIEF VALVE PRESSURE
ADJUSTMENT
A hydraulic oil pressure verification must be
performed every month. The relief valve is
preset to 2500 PSI +/- 50 PSI at 1500 RPM
by the manufacturer. If the pressure is not
within this preset adjustment, the pressure
relief valve must be readjusted.
ADJUSTING THE MAIN RELIEF
VALVE AT HIGHER PRESSURE
THAN 2500 PSI WILL CREATE
EXTENSIVE DAMAGE AND VOID
THE MANUFACTURER’S
WARRANTY.
CAUTION
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