New Holland T8010 Manual page 665

Problem - PTO will not engage
1. Check for PTO fault codes.
A. If fault codes are found, follow procedures outlined in PTO fault code troubleshooting in this section.
2. Place the PTO switch in the ON position. Check tractor monitor for PTO icon in the instrumentation display.
A. If the PTO icon is displayed, this is an indication the electrical control circuit is functioning correctly. Go to
Step 4.
B. If the PTO icon is not displayed, this indicates a problem in the PTO electrical control circuit. Check fault
codes, controller, and data bus function.
3. Place the PTO switch in the ON position. Check for voltage at the PTO valve coil.
A. If voltage is found, the electrical circuit is functioning properly.
B. If voltage is not found, troubleshoot the PTO electrical circuit.
4. Check wires 597A (LU) and 598A (BK) ground.
5. Check all connections for excessive resistance
6. Check solenoid coil for improper installation (loose etc.).
7. Place the PTO switch in the OFF position. Check for voltage at PTO valve coil.
A. If voltage is not found, the electrical circuit is functioning properly.
B. If voltage is found, troubleshoot the PTO electrical circuit.
8. Check wires 597A (LU) and 598A (BK) ground.
9. Check all connections for excessive resistance.
10. Install a 500 PSI gauge with hose into the PTO pressure test port. Use a 19mm socket to remove the plug.
Install diagnostic fitting from fitting kit 380040106. Place the PTO switch in the ON position.The pressure
should read from 2240 to 2450 kPa (325 to 345 PSI).
A. PTO solenoid cartridge valve may be sticking in the disengaged position. Check PTO solenoid cartridge
for proper operation.
B. PTO modulation spool may be sticking in the disengaged position. Remove PTO modulation spool, clean
and reinstall.
11. Check and repair the PTO clutch as needed.
Section 31 - PTO - Chapter 1
TROUBLESHOOTING
1
2
1. PTO CLUTCH PRESSURE PORT 2. PTO LUBE PRESSURE PORT
31-1-14
RI02C034