Altec DL Series - Verify Pilot Pressure within Calculated Range; Complete Section 1 Testing; Section 1 Adjustment; Adjust Pilot Pressure Reducing Cartridge

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8. Start the engine. With the engine running at idle, energize the pilot system using the
same function as in Step 4a or 4b. The pressure gauge should indicate within the range
calculated in Step 7. If the pilot pressure is above or below this range, adjust the
pressure as described in Adjustment at the end of this Section.
9. Disengage the unit’s hydraulic system and turn off the engine. Disconnect the pressure
gauge and replace the turntable cover. Proceed to Section 2: Threshold Calibration
Procedure
Adjustment
1. Remove the cap and loosen the jam nut on the pilot pressure reducing cartridge on the
lower control valve (refer to Figure 4). Turn the adjusting screw clockwise to increase
the pressure or counterclockwise to decrease the pressure. Hold the adjusting screw
to keep it from turning, and tighten the jam nut
Figure 4 - Pilot Pressure Reducing Cartridge
2. Test the pressure at the pilot pressure quick disconnect.
3. Repeat the adjustment until the gauge indicates the within the range calculated in Step
7 under Testing.
4. Replace the cap on the pilot pressure reducing cartridge. Disengage the PTO and turn
off the engine. Disconnect the pressure gauge and replace the turntable cover.
5. Proceed to Section 2: Threshold Calibration Procedure
Section 2: Threshold Calibration Procedure
1. Operate the unit to warm the hydraulic oil to 120 to 130 degrees Fahrenheit. This
temperature range is important. If the oil is not warmed to this temperature range,
the CADI settings resulting from the calibration procedures will not be
accurate, and poor meterability will result. One way to verify the oil temperature
is to use an infrared (IR) thermometer to read the temperature of the hydraulic reservoir
on or near the end opposite from the return line filter, at a point about
1
/3 of the way above
the bottom of the reservoir (refer to Figure 5). The oil can be warmed quickly as
described in Step 1a or 1b.
Pilot Pressure
Reducing Cartridge
Section 1
Testing
(Continued)
Section 1
Adjustment
Section 2