Daewoo B20S-2 Specifications Systems Operation Testing & Adjusting Disassembly & Assembly
Also see for B20S-2: Disassembly/Assembly
                                                  | |
Contents
| 
Power Train Testing And AdjustingThermal Switch TestsOpen Circuits TestOpen Circuit Test1. Put the digital multimeter Function/Range Switchon the 200 ohm resistance (Ω) scale.2. Put one test lead to each side of the thermalswitch harness.3. The resistance must be less than one ohm.Ground TestGround Test1. Put the digital multimeter Function/Range Switchon the 20M resistance (Ω) scale.2. Put one test lead to either of the plug prongs. Theother test lead must be grounded to the motorhousing.There must be more than one megohm resistance.Brush Life Estimate1. Before installation of new brushes, make aninspection of the armature commutator, seeArmature Commutator Inspection in Testing andAdjusting.2. Do the steps and procedures for New BrushInstallation in Testing and Adjusting.3. Make the initial (first) inspection of brush wearbetween 250 smh and 500 smh. The reason forthis initial inspection is to see if the brush wearrate is normal and not too fast. The measurementwill help make an estimate of the length of brushlife to be expected.NOTE : If there is an indication that brush wear is toofast, see Troubleshooting, Problem: Sparksat the commutator and/or rapid brush wear;for probable causes of this problem.4. Inspect all brushes in the motors. Measure andrecord each brush length (see Specification foreach new brush length and minimum brush length).5. Estimate expected brush life (hours). Use theshortest measurement from Step 4 and thefollowing Sample Procedure:Length of new brush ................45.8 mm (1.803 in.)Minimum length of brush...............19 mm (0.75 in.)New brush length [45.8 mm (1.803 in.)] - Minimumbrush length [19 mm(0.75 in.)] = Total amount ofusable brush wear [26.8 mm(1.055 in.)].Length of shortest brush at 500 smh is 43.3 mm(1.703 in.).New brush length [45.8 mm (1.803 in.)] - Length ofshortest brush at 500 smh [43.3 mm (1.703 in.)] =Amount of brush wear at 500 smh [2.5 mm (.10 in.)].Amount of brush wear at 500 smh [2.5 mm (.10in.)] ÷ Total amount of usable brush wear [26.8mm (1.055 in.)] = Portion of brush used at 500smh (.1).Service Meter Hours (smh) at brush wearmeasurement (500 smh) ÷ Portion of brushused (.1) = Approximate total brush life of a newbrush (5000 smh).Approximate total brush life of a new brush(5000smh)–Amount of smh at brush life estimate(500 smh) = Remainder of usable brush life(4500 smh).Tools NeededDigital Multimeter Or Equivalent 120 |
manualsdatabase
Your AI-powered manual search engine