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PAGE 20 — HTXD6i/STXD6i TROWEL • SETUP, ADJUSTMENTS AND CALIBRATIONS — REV. #1 (01/24/14)
MACHINE PRESSURE ADJUSTMENT
Charge Pressure Adjustment
1. Disable cold start.
2. With machine off, install gauge capable of reading 300
psi to Charge Or Pitch pressure test port (Figure 27).
Figure 27. Pressure Test Ports Location
3. Restart machine.
4. Increase engine rpm to full operating RPM (an operator
must be present on the seat to reach full engine speed).
NOTICE
All pressures to be adjusted with machine at full engine RPM.
To adjust pressures, cold start must be disabled through
the Whiteman Service Tool (WST).
NOTICE
DO NOT depress the foot pedal with the 300-600 PSI
gauge installed. Immediate damage to the gauge will
occur.
Cold start must be disabled. Failure to do so will cause
immediate damage to the gauge.
MACHINE SETUP AND CALIBRATION
5. Loosen 1-1/16" jam nut on charge relief valve (Item A,
Figure 28).
Figure 28. Charge Pressure Adjustment
6. Using a 1/2" socket, adjust the small hex nut within the
larger hex jam nut (Item B, Figure 28).
7. Adjust to proper charge pressure: 300 ±25 psi.
8. Record pressure on Machine Information and
Maintenance Log.
9. Retighten jam nut.
10. Return engine rpm to idle.
11. Turn off machine and remove gauge.
Pitch Pressure Check
1. Disable cold start.
2. Install a 3000 PSI range pressure gauge to Charge or
Pitch pressure test port (Figure 27).
3. Start machine and increase engine rpm to full operating
RPM.
4. Activate left pitch switch.
5. Flatten blades (bottom out the pitch cylinders).
6. Continue to hold down pitch switch and measure
pressure. If pressure is within range (1850 PSI to
2000 PSI), no adjustment is required. If pressure in
not within range, proceed to Pitch Pressure Adjustment
section.
7. If no adjustment is required, record pressure on
Machine Information and Maintenance Log.
A
B