7H01
TRADES HELPER

This is routine work assisting a full performance worker in a specific trade as listed above. Tasks become more complex as the helper progresses in skill. Assignments are well defined in nature. An employee in this class is expected to perform assignments according to detailed instructions. Work involves moderate physical efforts on a continuous basis and some undesirability working conditions that can be controlled by precautionary methods or devices. Work is performed under the continuous supervision of a full-performance trades superior.

• Employees must perform training-level work in a specific trades work.
• Work must be performed under the supervision of a higher-level trades superior.

• Uses hand and power tools characteristics of the trade specialty to assist a full performance tradesworker in performing maintenance, repairs or tests in a trade specialty. Assembles equipment and materials needed to begin and complete work projects; supplies tradesworker with materials and tools required while work is in progress; positions objects for installation, repairs, etc., cleans equipment; stocks maintenance vehicles with tools and equipment for field repairs; gathers salvageable materials in the field and returns them to the repair shop.
• Performs tasks under the supervision of a tradesworker in completing assignments within the specialty as follows:

Auto Body
• Removes upholstery and trim prior to repair work; removes damaged fenders, panels and grills using wrenches and cutting torches; removes dents and reshapes metal on door panels, fenders and hoods using hammers and fender irons; solders tears in metals; applies filler to small dents and grins to a smooth surface.
Auto Mechanic
• Removes and replaces automotive parts such as distributors, generators, starters, lights, and related electrical parts; removes coils, condensors and fly wheels; disassembles gear boxes and brake mechanisms; installs auto parts such as radiators, water pumps, batteries, wiper blades, alternators, and spark plugs; performs emergency road service.
Bookbinder
• Removes old bookends, cutting away old threads and glue using an electric cutter; applies new application of glue; cuts flannel and boards of different weights for new book covers; rounds the edge of the book to form joint for new cover; evens pages by trimming if necessary; makes casings by cutting cloth and applying glue with a gluing machine; covers previously cut boards with new casings.
Carpentry
• Shapes and fastens wood for partitions, frames, and flooring; replaces wood trim for windows, closets and baseboards; removes broken risers, treads and handrails for stairway; installs door hardware such as locks and doorknobs; fastens wooden objects and structures with nails, glue and dowels.
Electrical
• Rods ducts to pull high and low voltage cable; replace ballasts in fluorescent fixtures; uses portable testers to check fuses, relays, breakers, and electrical motors; dresses electrical contact on circuit breakers; mounts wall receptacles and light switches; replaces defective wiring in wall receptacles; replaces carbon brushes in commutators; fixes switches on appliances.
HVAC
• Adjusts controls for a large central system to meet changing conditions; uses oxyacetylene torch and lead detector to check refrigeration units for freon leaks; uses electric vacuum pumps, manifold gauges and refrigerant cylinder to evaluate and recharge refrigeration units; adjusts and replaces V-belt drive for compressors; checks circuits with test lights and repairs shorts or breaks in the electrical lines.
Machinist
• Dismantles equipment such as motors, pumps, and compressors; replaces defective parts including shafts, gaskets, bolts, and valve stems; operates grinding, drill press, lathes and other machine and hand tools.
Masonry
• Erects scaffolding; loads and unloads brick, stone, sand and cement; uses mixing hoe and mortar box to mix plaster, mortar and cement; operates air jackhammers and drills to break up cement; operates air tampers for packing dirt; measures and cuts channel iron and wire lath; applies brown and scratch coats for ceilings with hand troughs; measures and cuts Pyro Bar Partitions; cuts brick to proper size; polishes terrazzo floors with abrasive stone.
Mechanical
• Participates with a higher level mechanic in the assembling, disassembling, cleaning, adjusting, lubrication, maintenance and repair assignments in facilities such as pumping stations, treatment plants, incinerators and large buildings; assists in maintenance and repair of dehumidifiers, feeders, valves, furnaces, conveyor belts, mixers, pumps, pipes and similar mechanical equipment.
Painting
• Prepares surfaces; removes old paint by use of burners, sandpaper, electric sanders, liquid paint removers, scraper and sandblaster; applies putty, caulking, spackle and plaster to small holes and cracks; applies tape to seams of dry wall; applies paint to the interior and exterior of buildings, fixtures, and equipment using brushes, rollers, and spray guns; transports ladders, scaffolding and other positioning devices; sets up such equipment; cleans brushes, rollers and spray guns and makes minor repairs to equipment; removes broken glass from window frames, doors and other areas; installs and secures new glass using putty, hinges, pins and other materials.
Plumbing
• Cuts and threads pipe, cuts metal nipples to proper size; sweats copper pipes; operates electrically-powered sewer cleaning machine; uses electric pipe cleaning tools or auger; disassembles and cleans high and medium pressure steam traps; seals punctured floats in thermostratis steam traps; cleans pilot valves with pipe compound; checks steam line gauges for safety levels; opens and bleeds steam lines.
Rigger-Steeplejack
• Holds ladders and steadies other supports; erects lower tiers of rigging and scaffolding; moves and arranges bulky equipment such as furniture or machinery; operates pulleys for lowering and raising materials to work site; uses wrenches to tighten bolts when erecting grandstands for parades or other events.
Roofing
• Applies surface materials to roofs such as slate, tin, tile, slag, asphalt, or rubberoid shingles; rolls tarpaper; operates tar kettles; erects rigging for hoisting tarpaper; replaces shingles with nails or asphalt cement.
Sign Painter
• Sets up, feeds and operates semi-automatic sign painting machine; uses cutting machine to cut reflective sheeting for background of sign; operates baking applicator machine, roller coating machine and spray gun; cuts stencils and prepares silk screening; repairs, touches-up and maintains signs returned to shop for reuse; travels with sign crews on the streets to repair large traffic signs that cannot be brought into shop.
Telephone-Electrical
• Uses headset to check test tone transmitted through cable line to locate trouble source; disassembles telephones and call directors to replace and repair defective parts; reassembles and tests units; installs telephones; chips cement floors for pipe risers and runs cable.
Voting Machine Mechanic
• Prepares voting machine materials; performs voting machine service set-up and maintenance procedures; installs voting machine paper tape, ballot and memory cartridge; performs test election procedures; repairs and maintains voting machines, troubleshooting and identifying system problems.

• Performs related work as required.