New Holland T8010 Manual page 780

PTO CIRCUIT
C. Turn the PTO ON and back OFF.
Pressure Reading with PTO ON at 1000 RPM:____________
If the pressure dipped when the circuit was actuated, but does not return to the Regulated Circuit Baseline
Reading the PTO clutch is leaking.
If the pressure does not dip when the circuit is actuated check the solenoid function and electrical system
connections. See PTO System Section and double check for fault codes on the PTO controller.
If the pressure dipped when the circuit was actuated and returns to the Regulated Circuit Baseline
Reading the PTO clutch is okay. Continue with Item D.
PARK BRAKE CIRCUIT
D. Shift the transmission control lever from PARK to NEUTRAL and back to PARK.
Pressure Reading with transmission control lever in NEUTRAL at 1000 RPM:____________
NOTE: The Park Brake is spring engaged and hydraulically disengaged, so the pressure reading is taken with the
transmission control lever in NEUTRAL.
If the pressure dipped when the circuit was actuated, but does not return to the Regulated Circuit Baseline
Reading the Park Brake clutch is leaking.
If the pressure does not dip when the circuit is actuated check the solenoid function and electrical system
connections. See Park Brake System Section.
If the pressure dipped when the circuit was actuated and returns to the Regulated Circuit Baseline
Reading the Park Brake clutch is okay. Continue with Step 3.
NOTE: Park brake pressure can also be checked at the park brake diagnostic coupler.
1
Section 35 - Hydraulic Systems, 3PT - Chapter 2
1. PARK BRAKE DIAGNOSTIC COUPLER
35-2-23
RI06A082