MACHINE SETUP AND CALIBRATION
MACHINE PRESSURE ADJUSTMENT
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).
Charge Pressure Adjustment
NOTICE
DO NOT depress the foot pedal with the
Cold start must be disabled. Failure to do so will cause immediate damage to the gauge.
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).
5.Loosen 1-1/16" jam nut on charge relief valve (Item A, Figure 28).
A
B
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.
PAGE 20 — HTXD6i/STXD6i TROWEL • SETUP, ADJUSTMENTS AND CALIBRATIONS — REV. #1 (01/24/14)