Figure F.7 Lead Locations, Test Procedure

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F-36	TROUBLESHOOTING & REPAIR	F-36

ENGINE ALTERNATOR TEST (CONTINUED)

FIGURE F.7 - LEAD LOCATIONS

BACK OF ALTERNATOR

238243

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TEST PROCEDURE

1.Turn the engine off.

2.Open the engine access door and check the voltage at the battery terminals. It should be approximately 12 volts DC.

3.Attach the meter leads to the battery terminals, being careful to position them so they stay clear of moving parts while the engine is run- ning.

4.Place the idle switch in the “HIGH IDLE” posi- tion, start the engine, and allow it to run at high idle speed for about 15 to 30 seconds.

5.The meter should read about 13.7 to 14.2 VDC.

6.If the meter reads correctly the engine alterna- tor is producing adequate power to charge the battery and this test is complete.

6.If the voltage is significantly higher than the above values, the alternator is not properly regulating the battery charging voltage and should be replaced. If the voltage reads the same or less than the measurement taken when the engine was not running, proceed with the following tests.

7.Turn off the engine, disconnect the meter from the battery, and open the engine access door on the left side of the machine.

8.Make sure the idle switch is still in the “high” position, start the engine, and allow it to run at high idle speed for about 15 to 30 seconds.

9.Place the negative meter probe on a good chassis ground, or the negative battery termi- nal. Place the positive meter probe on the bat- tery terminal on the back of the alternator. (Lead #238) See Figure F.7. See Wiring Diagram.

10.The meter should read about 13.7 to 14.2 VDC.

11.Move the positive probe to the DT terminal on the back of the alternator. (Lead 243C) See Figure F7.

12.The meter should read about 13.7 to 14.2 VDC.

13.If the meter reads correctly, check the connec- tions between the alternator and the battery. See wiring diagram.

14.If the voltage at both of the above test points reads the same or less than the battery voltage measurement taken when the engine was not running, the alternator is defective. Repair or replace it.

VANTAGE® 400

400 specifications

The Lincoln Electric 400 is a state-of-the-art multi-process welding machine designed to meet the demands of today’s industrial welding applications. Renowned for its reliability and versatility, this welder is a preferred choice among professionals in fabrication, construction, and maintenance industries.

One of the main features of the Lincoln Electric 400 is its multi-process capability. It seamlessly integrates MIG, TIG, and stick welding processes into a single unit, allowing users to switch between methods depending on the job at hand. This flexibility makes it incredibly suitable for a wide range of materials, including steel, stainless steel, and aluminum.

The welding machine boasts a robust power output, with a maximum range of 400 amps. This impressive capacity enables it to handle thick materials effectively, making it ideal for heavy-duty tasks. The machine operates on both single-phase and three-phase power, giving users the advantage of versatility depending on the power source available at the job site.

Another significant characteristic of the Lincoln Electric 400 is its advanced digital display and control interface. This user-friendly panel allows for easy adjustments to voltage and wire feed speed, ensuring precision and high-quality welds. Additionally, the machine includes built-in features to improve the consistency of welding, such as the Smart MIG technology which optimizes the welding parameters automatically based on the wire diameter and material thickness.

In terms of durability, the Lincoln Electric 400 is designed for rugged environments. Its heavy-duty construction, including a robust metal casing and protective features, ensures it can withstand the rigors of daily use in harsh conditions. Furthermore, the welder is often praised for its efficient cooling system, which prolongs the machine's lifespan and maintains optimal performance even during extended usage.

Portability is another key aspect of this welding machine. Weighing under 200 pounds, it is designed with mobility in mind. The integrated wheels allow for easy transportation between job sites, making it a practical choice for mobile welders and contractors.

In conclusion, the Lincoln Electric 400 stands out in the welding equipment market due to its multi-process capabilities, impressive power output, user-friendly interface, durability, and portability. It is engineered to exceed the expectations of professional welders, providing them with the tools needed for high-quality results across a variety of applications.

Lincoln Electric 400 service manual Figure F.7 Lead Locations, Test Procedure

Models: 400

TROUBLESHOOTING & REPAIR