1. SCHEMATICS AND DRAWINGS INMT 2345 - 01 Vern Wilson

2. Schematics – PAGE 71 Single line drawing – shows sizes Piping Schematics Orthographic Isometric Valves - Globe, gate, plug and check Compressor schematics Hydraulic schematics

3.  Provides a mental picture ◦ Shows what the system does ◦ How each part works ◦ Where the part is ◦ How to get access to the system ◦ What may be normal cause of problem  Simple single line

4.  ISOMETRIC ◦ Isometric on 30° angle ◦ Gives a 3D perspective ◦ Draw a box  ORTHOGRAPHIC ◦ Straight on views ◦ Views at 90° from each other ◦ Draw a toilet

5.  TYPES ◦ GLOBE ◦ GATE ◦ PLUG ◦ CHECK ◦ BALL ◦ BUTTERFLY ◦ NEEDLE ◦ DIAPHRAGM

6.  Schematic for each part of system ◦ Gasoline or diesel system ◦ Electrical system ◦ Hydraulic system ◦ Lubrication – page 75 ◦ Cooling

7.  HYDRAULIC – uses liquid – page 76 ◦ Reservoir, pump and relief valve, control valve  PNEUMATIC – uses a gas ◦ Filter, compressor, receiver, relief valve, control vlv

8.  Today runs on electricity ◦ Toothbrush ◦ A/C ◦ Lights ◦ Auto systems  Starting circuits – page 81  Plant diagrams ◦ Lighting systems