Dump Hoists

Safety arm use, operation and lubrication.

Lessons

1. 01Using the Safety ArmUnloaded bodies only.
2. 02Operation & LubricationDon't shock the body.
3. 03Interpreting Hoist Capacity ChartsSelect a capacity entry by matching the hoist, body length, overhang and dump angle while retaining the chart's application assumptions.
4. 04Safe Diagnostic SequencingBegin troubleshooting with hydraulic safety, circuit understanding and electrical checks before pursuing hydraulic faults.
5. 05Tracing Power-Up, Gravity-Down OperationTrace the separate electrical and fluid paths used to extend and retract a gravity-down cylinder.
6. 06Tracing Power-Up, Power-Down OperationRelate the powered-down circuit's coil commands, cylinder ports, return paths and relief protection.
7. 07Diagnosing Voltage, Ground and Cable ProblemsConnect low-voltage symptoms to charging, grounding, connections and cable selection before condemning hydraulic components.
8. 08Separating Relief, Check and Lowering-Valve FaultsDistinguish pressure protection, backflow prevention and commanded release by understanding each valve's function and failure modes.
9. 09Diagnosing Directional and Load-Holding ValvesEvaluate directional-valve shifting and distinguish its faults from problems in the documented load-holding arrangement.
10. 10Advanced Symptom-Based Fault IsolationUse motor behavior, cylinder direction and reservoir symptoms to select the documented diagnostic branch.