The Heavy Mobile Equipment Mechanic (HMEM) located at the VA Greater Los Angeles in the Maintenance and Operations section, Engineering Department. The primary purpose of the Heavy Mobile Equipment Mechanic is to operate, maintain and repair the 22 Emergency Generator power plants located throughout the VA-WLA facility. The emergency generators are required to be maintained in a constant state of readiness for automatic starting in the event of an electric utility failure.
HMEM is responsible for the repair, modification and maintenance and periodic testing of all emergency generators. The generator partial inventory consists of (2) Electromotive 2000 K.W. 16-cylinder generator, two (2) Detroit 8 cylinder generators, one (1) Detroit 500 K.W. 16-cylinder generator, one (1) Caterpillar 1500 KW 12-cylinder generator, and one (1) 6 cylinder Allis-Chalmers generator. There are numerous other smaller generators. Engine types include EMD, Perkins, Caterpillar, Cummins, Isuzu and John Deere. HMEM must be able to troubleshoot, calibrate, repair, design and modify, racks, injectors, and valves. Check air boxes for excessive wear to pistons, change out power packs, check rod bearings, feed pipes, set racks, check torque or cylinder heads, maintain turbo air cleaners, check and change oil, oil filters, fuel filters and repair modify and maintain all associated component systems and controls.
The HMEM spends approximately 75% of their working hours performing maintenance checks, repairs, and testing of the emergency generators.
The HMEM spends approximately 25% of their time performing other duties such as: repairs to Heavy Duty Lawn Equipment, Electric Carts, Fork lifts, man lifts, street sweeper, Backhoe, and other mechanical repairs.
Skill and Knowledge
The HMEM is required to possess specialized skill and knowledge in the operation and maintenance of a wide variety of Diesel, gasoline and electric powered heavy equipment. This includes the most detailed knowledge required for the technician to be fully competent in performing the required duties at the full performance levels. This is at the level where the individual can provide guidance and instruction to others as to the manner of performing the required task. Demonstrable Knowledge of work practices, methods, and processes, related to the maintenance and repair of emergency generators for modifying, repairing and replacing systems and components of emergency generators and other heavy mobile equipment.
The HMEM will have a good working knowledge of shop mathematics and the applications to pumping and piping, horse power, fuel consumption, heat transfer efficiencies.
Ability to diagnose equipment failures using meters, gauges, instrumentation to identify complex problems in the field. In depth knowledge of the operation of Diesel, Gasoline engines and Electric Motors and all related systems and components such as cooling tower operations, large pumping systems, thermostatic controlled devices, alarm systems and engine protection shutdown devices. Must possess the knowledge and theory of hydraulics, mechanical and electrical.
HMEM must possess a good working knowledge of other trades such as Industrial Plumbing, Electrical, (Alternating current and Direct current principles), Welding, Instrumentation and Calibration, HVAC and heat transfer.
The HMEM will be required to perform maintenance and repairs on site where the equipment is located. They will be subjected to cramped quarters, awkward positions on the ground, on a ladder or scaffold and required to reach in between and around components making certain repairs more difficult.
The HMEM will be required to have excellent reading and comprehension skill of technical materials. They must possess good communication skills. Possess the ability to interpret blueprints, technical manuals, exploded views and parts lists and the ability to communicate what is required to make effective repairs.
The HMEM will be adept in the use of all hand and power tools. This includes the use of power impact wrenches, hand tools, welding and cutting torch, hoists and lifting devices. In all instances the HMEM will work within safety guidelines.
The HMEM is working around rotating equipment. They must be of sound mind and body, cognizant of their surroundings and always aware of the safety protocols required. They need to be attentive to their work, and exercise good judgement all the time.
The HMEM will be well organized and able to prioritize and plan their work in an efficient manner, meets all testing and maintenance check timelines, provides all reports when due and all Joint Commission Documentation is provided to the Supervisor on time.
The HMEM is responsible for a variety of electromotive generators and general mechanical systems as well as various construction and maintenance facility equipment. The complexity of design and the details of emergency and back-up systems encountered at the Medical Center are far more rigorous than those of industrial or commercial layouts. Therefore, the HMEM will receive many project and work assignment with a minimum of instruction concerning the method by which the work is to be accomplished project materials which are to be used to complete the assigned task. Much of the work is assigned on a project or repair basis requiring the mechanic to make difficult decisions as to the design and modification of a system or systems for specific departmental needs.
HMEM works from mechanical drawings, schematics, and published manufacturer specifications and manuals and must be able to make judgements and decisions about assigned work as technical guidelines may not exist for the area if modification encountered. HMEM must be able to plan and lay out a work plan that at the same time must be flexible enough to accommodate changes that may occur during the work and which require on the spot decision making. A mechanic at this level must be able to determine what a situation demands in terms of construction, location and installation of special equipment so that work of a critical nature (such as scientific experimental activities).
This position requires a great deal of skill in disassembling, cleaning and rebuilding while not damaging delicate internal components and external actuators and controllers. HMEM must calibrate and adjust to exacting standards.
HMEM must modify systems and components as necessary such modifications include the fabrication and installation of battery shields, modification of oil drain systems, fuel pump and piping systems, engine water heater circuits, air box blow-by system, cylinder head blow-by system, piping for engine cooling systems, pre-lube systems, etc. Modifications to oil pumps to divert oil from system, modification to pre-lube system with in line filters and piping, modification and installation of high pressure water feed system to radiator holding tank, modification of radiator holding boxes for new type radiators, and the installation of a new type of over speed control system including switches and wiring.
HMEM must also be able to troubleshoot, calibrate, install, modify and repair pneumatic starters for a 2000 K.W. emergency generator, and is required to perform proper maintenance on all diesel generators at the Journeyman level.
Additional duties and responsibilities are to do preventive maintenance, operate lathe, drill press, do acetylene and electric welding, make minor adjustments, major repairs modifications, overhauls, and rebuilds a large variety of stationary and portable mechanical equipment and/or component parts of same, requiring the higher skills of the mechanical trades. Also, required to repair indoor battery powered tractors. The HMEM must be able to repair pneumatic, hydraulic, and electrical door openers.
The portable and stationary equipment includes, but is not limited to, metal working, exhaust fans, vacuum pumps, mechanized building management equipment, food and clothing handling equipment, fork lifts, back hoes, commercial lawn equipment, electric carts such as GEM cars, Electric Pallet Jacks and hydraulic and electric man lifts.
Component parts of equipment repaired are machined parts of close tolerance such as: gearing, pumps, clutches, valves, etc., requiring a good knowledge of the machinist and welding trade, and implementation of tools of those trades to effect repairs.
Mechanic performs regularly scheduled maintenance inspections, diagnoses malfunctions and makes minor and major repairs on all included but not limited to the listed equipment above.
The HMEM has considerable independence and works with minimal supervisory controls. HMEM receives written work orders and verbal instructions typically general in nature and the tradesman is responsible for developing a correct plan of action and the execution and accomplishment of the task.
Technical manuals and factory parts breakdowns are utilized frequently to order parts, determine sequences of operations, diagnostics for troubleshooting and maintenance planning. The mechanic will have the authority to prioritize their work under normal circumstances, unless directed otherwise by the immediate supervisor due to the needs of the facility. The HMEM is required to use good judgement to assure a high-quality outcome and assurance of highly reliable emergency equipment, and all other assigned equipment as well.
The HMEM is responsible for a variety of electromotive generators and general mechanical systems as well as various complex vacuum, medical air and pneumatic pump equipment. The complexity of design of systems and the details of construction for systems encountered at the Medical Center are far more rigorous than those of industrial of commercial layouts. Therefore, the HMEM will receive many project and work assignments with a minimum of instructions concerning the method by which the work is to be accomplished or the materials which are to be used to complete the assigned task. Much of the work is assigned on a project of project basis requiring the mechanic to make difficult decisions as to the design and modification of a system or systems for specific departmental needs. HMEM will use the computer and be skilled in utilizing the internet for information searches pertaining to the operation, maintenance and repair of assigned equipment. Therefore, the HMEM must be able to plan and lay out a work plan that at the same time must be flexible enough to accommodate changes that may occur during the work and which require on-the-spot decision making. A mechanic at this level must be able to determine what a situation demands in terms of construction, location and installation of special equipment so that work of a critical nature (such as experimental activities) may continue without disturbance. The HMEM has considerable independence and works with minimal supervisory controls. HMEM receives written work orders and verbal instructions typically general in nature and the tradesman is responsible for developing a correct plan of action and the execution and accomplishment of the task.
HMEM must exert moderate to arduous physical effort involving walking, standing, bending, stooping, lifting, crawling, occasionally working in cramped and awkward positions and working off ladders and scaffolding. HMEM is also exposed to the possibility of burns, cuts, bruises and electric shocks.