203 HDM 103 (3) S Intro to Truck Trailer Maintenance Includes ... sheets (MSDS) and the identification of tools and their uses. Includes how to work ... safely with tools and equipment in a repair shop. Prereq ... and changing oil and lubing, according to manufacturersf specifications for ... systems, as well as the hardware to control them. Prereq: HDM 102. HDM 107 ... of selected types of hydraulic and air pumps, motors, hoses and accessories used on ... 109 (4) S Truck Trailer Repair Covers how to make minor repairs to trucks and ... trailers, change tires, repair tires, and adjust wheel ... bearings to manufacturers specifications. Prereq: ... 4) S Truck Trailer Maintenance Covers how to cut and weld using oxyacetylene, ... proper forklift operation in order to position equipment (using safety at all ...