| A. General |
| MHT8A001 |
Research vehicle service information, including vehicle service history, service precautions, fluid type, and technical service bulletins. |
| MHT8A002 |
Verify placement of equipment/component safety labels and placards; determine needed action. |
| MHT8A003 |
Identify hydraulic system components; locate filtration system components; service filters and breathers. |
| MHT8A004 |
Check fluid level and condition; purge and/or bleed system; take a hydraulic fluid sample for analysis; determine needed action. |
| MHT8A005 |
Inspect hoses and connections for leaks, proper routing, and proper protection; determine needed action. |
| MHT8A006 |
Use appropriate electronic service tool(s) and procedures to diagnose problems; check, record, and clear diagnostic codes; interpret digital multimeter (DMM) readings. |
| MHT8A007 |
Read and interpret system diagrams and schematics. |
| MHT8A008 |
Perform system temperature, pressure, flow, and cycle time tests; determine needed action. |
| MHT8A009 |
Perform system operational tests; determine needed action. |
| B. Pumps |
| MHT8B001 |
Identify causes of pump failure, unusual pump noises, temperature, flow and leakage problems; determine needed action. |
| MHT8B002 |
Determine pump type, rotation, and drive system. |
| MHT8B003 |
Remove and install pump; prime and/or bleed system. |
| MHT8B004 |
Inspect pump inlet and outlet for restrictions and leaks; determine needed action. |
| C. Filtration/Reservoirs (Tanks) |
| MHT8C001 |
Identify type of filtration system; verify filter application and flow direction. |
| MHT8C002 |
Service filters and breathers. |
| MHT8C003 |
Identify causes of system contamination; determine needed action. |
| MHT8C004 |
Inspect, repair, and/or replace reservoir, sight glass, vents, caps, mounts, valves, screens, supply, and return lines. |
| D. Hoses, Fittings, and Connections |
| MHT8D001 |
Diagnose causes of component leakage, damage, and restriction; determine needed action. |
| MHT8D002 |
Inspect hoses and connections for leaks, proper routing, and proper protection; determine needed action. |
| MHT8D003 |
Assemble hoses, tubes, connectors, and fittings. |
| E. Control Valves |
| MHT8E001 |
Pressure test system safety relief valve; determine needed action. |
| MHT8E002 |
Perform control valve operation pressure and flow tests; determine needed action. |
| MHT8E003 |
Inspect, test, and adjust valve controls (electrical/electronic, mechanical, and pneumatic). |
| MHT8E004 |
Identify causes of control valve leakage problems (internal and external); determine needed action. |
| MHT8E005 |
Inspect pilot control valve linkages, cables, and PTO controls; adjust, repair, or replace as needed. |
| F. Actuators |
| MHT8F001 |
Identify actuator type (single-acting, double-acting, multi-stage, telescopic, and motor). |
| MHT8F002 |
Identify the cause of seal failure; determine needed action. |
| MHT8F003 |
Identify the cause of incorrect actuator movement and/or leakage (internal and external); determine needed action. |
| MHT8F004 |
Inspect actuator mounting, frame components, and hardware for looseness, cracks, and damage; determine needed action. |
| MHT8F005 |
Remove, repair, and/or replace actuators. |
| MHT8F006 |
Inspect actuators for dents, cracks, damage, and leakage; determine needed action. |