The starting current is very large, normally 6 to 8 times the rated current. Abstractthis paper presents a comparison between the directonline d. Dc motor principle a machine that converts dc power into mechanical energy is known as dc motor. Basic bench testing of a starter motor apex tool company. When activated by the plunger, the shift lever pushes the pinion gear and causes it to mesh with. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. If your 2002 ford taurus wont start, the malfunction may come from the starter motor relay, which helps to regulate current to, as its name suggests, the starter motor. Starter motor is one of the parts that is highly stressed in our car as it has the primary role of starting up the motor. A fault diagnosis of engine starting system via starter. How to test troubleshoot check a starter for correct operation. If you get a higher voltage drop reading, check the starter motor s mounting bolts for tightness. When testing the starting system on a vehicle with a sixcylinder engine, you find that the engine cranks slowly, the starter current draw is 80 amps, and the battery voltage during cranking is 11. It is a basic test that should be done before you fit a starter motor, especially if you have purchased one from the scrapyard. Test that the starter motor is receiving the start signal from the ignition switch.
Jun 26, 2017 the most common starter problem is loose contact or dirt accumulation. Part 1 how to bench test a starter motor step by step. Testing for a bad starter motor causing a no crank condition. Agear on the starter motor armature engages with gear teeth on the engine flywheel. The term motor used in this checklist refers to all kinds of motors ge produced which are stated in section 4 in this document.
One of the main differences of a starter is that it requires a lot of current for a short time, as opposed to a generator, which works with a small amount of current over a longer period of time. Its operation is based on the principle that when a current carrying conductor is placed in a. Bench testing the starter is the most effective way to find out if the starter motor is in fact bad. For starters with 12volt dc motors, direct drive output for up to 12,000 rpm, up to 100 11. Dc motors although ac motors are used in most of the cases, dc motors have many applications and used for multipurpose applications. Although easy to remove and replace, you should take extra care during repair as the starter motor relay rests in the engine compartment power. Finally, voltage variations or line supply failures can also cause shutdowns. Jan 28, 2020 bench testing the starter is the most effective way to find out if the starter motor is in fact bad. How to replace the starter motor relay in a ford taurus it.
Starter motor is one of the parts that is highly stressed in our car as it has the primary role of starting up the. If the battery is discharged, the lights in a car might come on, but it wont be enough power current to turn over the starter motor. A builtin pneumatic air pressure system, complete with air filterregulator, provides a clamping force that holds the motor down while testing. Testing the thyristors step by step before disconnecting the cables mark them. A plunger in the magnetic switch solenoid is connected to a shift lever. Switch design and function vary from system to system.
Cranking motor maintenance section form 3404771 7585 empire drive florence, ky 41042 800 3540560. Automatic motor load and efficiency estimation based upon field. Field coils cheek the field coils for grounds figure 4 by placing one test probe on the frame and the other an the starter terminal. If testing the starter circuit see checking the starter circuit indicates a fault in the starter motor, disconnect the battery and remove the motor from the car complete with its attached solenoid if it is a preengaged type of motor.
This is a basic bench test of the starter motor and solenoid off the vehicle. That is, the motor shall not be dismantled to remove sealing elements. Part 1 how to test the starter motor on the car step by step. Getting started with the starter commissioning tool. Manual tripto test allows a quick test of the mechanical. What normally happens is that you will jump in your car to go somewhere important, turn the ignition key and all that you here is a clicking noise and the car wont start. Feb 12, 2017 testing an old triumph spitfire starter motor and pinion gear with direct connection to a battery. This is useful for troubleshooting highpower circuits like starter motors, fuel pumps and blower motors. So youll need to remove the starter motor from the car or truck to bench test it. However, testing a starter motor by yourself is not that difficult and you can follow the procedure below. Convenient if replacing an existing star delta starter with a new soft starter step 4. Starter motors spin up like mad when you turn your boats key and press the starter button.
Starter motor converts electrical energy through a battery into mechanical rotating energy. Test results of motor starter equipment shall be in accordance with. Testing a starter motor on the car or truck is a pretty easy test. Whether its a ford, chevrolet, nissan, toyota, honda.
Customized test system for starter motors electrometers. How to use voltage drop to troubleshoot the starter system. Most common motor connection suitable for most motors. Feb 05, 2008 either the starter motor is broken or there may be a problem with either the battery or the connections between the battery and the starter motor. For other car restoration goodness, please visit my websit. If voltage is present at the solenoid motor terminal, then the problem is the starter motor or its cabling. Motor controls basic theory quiz electrician exams. The march 1998 issue of motor had an article that covered in detail current testing with a lab scope. You must have a strong battery to test the starter.
Test that the starter motor is receiving 12 volts on its battery circuit. Armature testing cleaning introduction and inspecting theory of operation assembling starter motor testing chapter organization starter motor installation. Sealing elements that can only be removed by dismantling the motor shall be left in place. Do not lift both the motor and driven equipment with the motor lifting means. Alternator power ratings can also be said in watts. Square d type s contactors and starters the standard for flexibility, simplicity, and reliability. Disconnect the power cables from the main terminals 1l1, 3l2, and 5l3 and the motor cables from terminals 2t1, 4t2 and 6t3 disconnect all cables from the terminals 1 to 20, the external keypad, and the ptc sensor and if used, the field bus plug. The interaction of two magnetic fields produce this rotational force. When the engine starts, the start switch is released. How to test a starter motor starter motors have a hard job, and i have owned many cars where the starter motor has eventually needed to be changed.
Basic bench testing of a starter motor if you are having trouble starting your car, it may be that the starter motor has some problems. If the switch activates but the motor does not spin, the problem may be the switch contacts, or the motor. Because of this, there are two types of field coils used in starters. The engine starting system includes battery, starter motor and ignition switch.
If your original test of the ignition or run switch indicated normal voltage, but slow or no cranking, your next step is to check the motor system and its connections. Rtd circuits shall be in accordance with system design intent and machine protection device. Describe the similarities and differences between air, hydraulic, and electric starting systems 3. How to test the starter motor on the car step by step. Test results of surge protection devices shall be in accordance with procedures for testing of lv surge arresters. Voltage drop test the starter battery and ground circuits. Benchmarking stateoftheart technologies tim burress oak ridge national laboratory. The direct online dol starter is the simplest and the most inexpensive of all starting methods and is usually used for squirrel cage induction motors. The starter motor doesnt run, even though there is a 12volt. While the motor is smaller and weighs less than conventional starting.
Identify all main components of an electric starter motor assembly 4. Sinamics s120 getting started with the starter commissioning tool 032006 edition. One of the main differences of a starter is that it requires a lot of current for a short time, as. Pdf starter motor converts electrical energy through a battery into mechanical rotating energy. Identify all main components of a diesel engine starting system 2. This presentation does not contain any proprietary, confidential, or otherwise restricted information 20 u.
It also can paint a whole new picture of fuel injector and solenoid operation. In doing so it converts electrical energy into mechanical energy. Secondary negative battery cable diesel many diesel applications use two 12 volt batteries, connected in parallel. If battery voltage is found, the motor has a break in the circuit within the case. This is an easy test that you can accomplish yourself without having to take the starter motor to autozone or oreilly auto parts or pepboys auto parts. This custom feature allows for continuous 18second cycle testing. The pinion gear is on the same shaft as the motor armature and rotates at the same speed. Test the starter circuit cranking voltage cranking r. They produce big power in a short time and in a small volume. The purpose of this research is to find out the most reliable and.
Chapter 8 automotive electrical circuits and wiring. Capitulo 2 automotive electrical circuits and wiring. The starter is fitted with safety devices which, in the event of a fault, can stop the starter and consequently the motor. At 50 hz, a motor will run at a speed related to a constant of 6000 divided by the number of poles and for a 60 hz motor the constant is 7200 rpm. The john deere service manual pdf we have available online here are the finest standard reference for all john deere tractor repairs.
It directly connects the contacts of the motor to the full supply voltage. How to test a bad starter on and off the car easy for the diyer duration. Basic bench testing of a starter motor apex tool company, inc. Series lsk motor starters complete line of open and enclosed motor controls. Motor current signature analysis mcsa is a proven and accepted method for determining the condition of a motors current carrying components. Proper vehicle diagnosis requires a plan before you start. But some manufacturers will take a voltage drop reading between 0. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. Electric starter motor the electric starter motor converts electrical current into rotary motion. Starter motor heavygauge cables the circuit between the battery and the starter motor is controlled by a magnetic switch a relay or solenoid. These components make up a typical starting system manual.
When starting a car with a fully charged battery, there is a single click or nothing happens at all. Checking and replacing the starter motor how a car works. Johnson evinrude 1971 to 1989 1 to 60hp service manual pdf. Recommended interpretation of iec 6003421 external contact seals at the drive shaft extension ends shall be removed prior to testing. Za page 6 how to test for a starter motor voltage drop. Motor data ratings are referred to as the power of the motor in kw and the full load current. With the starter motor removed from the engine, the no load test can reveal damage that can be corrected by. It not only gives you an accurate, powerful battery, starter and alternator tester but also includes tests for relative compression and cylinder balance.
Note that the performance of these tests is limited by some modern vehicles smart charging systems. Testing can be conducted without interrupting the normal operation of the motor, and in fact should be performed when the motor is under a minimum of 70% load. Voltage drop on the ground side of the starter circuit should be no more than 0. The field coils either electromagnetic or permanent located in the housing produce magnetic flux lines. How to test and troubleshoot a starter problem youtube. This type of starter has a compact, highspeed motor and a set of reduction gears. Volt drop starter cables resistance in the high amp starter battery cables will cause slow cranking replacing a starter motor without checking volt drop may cause the new starter to fail high amp starter cables should have less than. Comparison between dire ctonline, stardelta and auto. If the cause of the shutdown disappears, there is a risk of restarting which may endanger. This how to test the starter article applies to anything out there rolling around on pavement automobilewise. Pdf an overview of automobile starting system faults and fault. The hardest thing in the whole procedure is to get the motor out of the vehicle and on to a test bench, as this is an off car test. June 1, 2011 this manual includes assembly, disassembly of the starter motor, cleaning, visual inspection, tools, torques, service inspection limits. Here are pdf files of the wiring systems and testing procedures for a all the motorcycle starter dynamos that i could find.
The only problem is when your outboard doesnt start, and youre left wondering if the problem is the starter itself or just the starter button. The technical service manual pdf is an extremely clear and highly detailed manual, originally designed for the shop mechanics at. To calculate the speed of a motor, the following formula can be used. Be sure the brushes are not accidentally touching the frame. Data or information required for these studies as well as the expected results of a. A special purpose tester connects to the battery to measure starting. Heavy duty motor starter series xlsk single phase and three phase motor starters. If the head lights go very dim then probably the battery is flat. An analysis of the test result from all three phases will show if you have a shorted thyristor or not. For this reason, temperaturesensitive parts lines or electronic components, for example must not be placed on or attached to the motor. Checking and replacing startermotor brushes how a car works. One of the most overlooked tests when troubleshooting starting problems is a voltage drop test. Starter motor the gear reduction starter is a compact lightweight unit with high torque capacity. Conventional starter motor the conventional starter motor contains the components shown.
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