OPTIMIZER
TM
28
PRESSURE ADJUSTMENT
PROCEDURE
• Install a 3000PSI pressure gauge
on the quick coupling found on the
main valve (Figure #1.17).
• Start the engine and engage the
hydraulic system. Maintain the
engine speed at 1500 RPM.
• Open the tailgate until the
mechanism reaches the end of its
stroke.
• Check the pressure while the
tailgate is held fully open.
• The pressure reading shall be within
2450 and 2550 PSI. Adjust the main
relief if necessary (Figure #1.17).
• Loosen the lock-nut and turn the
adjustment knob clockwise to
increase the pressure and counter-
clockwise to reduce the pressure.
USE THE APPROPRIATE
LOCKOUT/TAGOUT PROCEDURE
AT ALL TIMES (SECTION 1.1.4).
1.4.5 PUMP MAINTENANCE
The hydraulic pump on the OPTIMIZER
TM
is
a gear pump type equipped with a Muncie
live pack pump (Figure #1.18).
DANGER
1.4.4 PRESSURE ADJUSTMENT
PROCEDURE
If the pump is properly maintained, it will
provide a satisfactory output. If the pump is
noisy, carry out the following inspections:
FIGURE #1.18
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