Bad Boy 1022H - HST System Diagnostics

B22W-202010
4
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10
CHAPTER 4 HST SYSTEM 1022H TRACTOR
5. DIAGNOSTICS
Test conditions:
- Operator in seat
- Key switch in RUN position
Test conditions:
- Start engine and run at slow idle
Test/Check point Normal If Not normal
1. Control pedals Pedal should move freely Check linkage from pedals to pump
Test/Check point Normal If Not normal
2. Directional pedals are in neutral
position
Machine should not creep forward or
backward
Adjust centering of pump control
pedals (Neutral Adjustment Knob)
3. Move forwards or reverse pedal
slowly from neutral to maximum
travel speed position
Machine should accelerate smoothly
forward or backwards
Check the tension spring
Check the location of damper
Check uid reservoir for proper uid
level.
Check hydraulic pipe and connections
for leaks.
Perform system ow and pressure
checks to verify proper operation of
charge pump and hydrostatic pump
4. Control pedal in full forward
position
Machine should move forward Check pedals and forward/reverse
linkage for damage.
Check forward drive pressure relief
valve
5. Control pedal in full reverse
position
Machine should move backward Check pedals and forward/reverse
linkage for damage.
Check reverse drive pressure relief
valve.