Hydraulic Power Units & Remotes

Electrical-first troubleshooting, circuit types and symptoms.

Lessons

1. 01Start With ElectricalMost hydraulic problems are electrical.
2. 02Power-Up/Gravity-Down vs Power-Up/Power-DownHow circuits 103 and 111 work.
3. 03Common SymptomsOverflow, solenoid failure, bed won't move.
4. 04Safe, Electrical-First DiagnosisEstablish hydraulic safety and evaluate the electrical supply before attributing poor performance to hydraulic components.
5. 05Trace a Power-Up, Gravity-Down CircuitSeparate the powered extension sequence from the valve-controlled return sequence in the documented single-acting circuit.
6. 06Trace a Power-Up, Power-Down CircuitFollow the pump, directional valve and load-holding valve through extension and powered retraction.
7. 07Distinguish Valve Functions and Failure ModesUse valve function, contamination evidence and the documented shift check to distinguish hydraulic faults.
8. 08Separate Similar Symptoms Before Replacing PartsUse motor behavior, direction of failure and load response to select the relevant documented checks.
9. 09Diagnose and Synchronize the Basic Wireless RemoteRead remote outputs and indicators, then distinguish synchronization from transmitter cloning.
10. 10Program Hoist and Winch Pump ParticipationMatch the programmable receiver's pump output to powered or gravity operation without confusing programming with pairing.
11. 11KTI Bleed-Cycle Selection and Air RemovalUse the applicable KTI bleeding instructions without combining different published procedures.
12. 12Hydraulic Fluid, Temperature and Seal CompatibilitySelect hydraulic oil from the equipment table rather than a universal grade or a chart estimate.