LOGIC PROB LED TESTER LIGHT

The following is instructions and equipment/materials to make the Probe

Equipment:

• Bass Rod
• Red Lead
• Green Lead
• Black Wire
• Red Wire
• 2,1000 ohms resistors
• Red/Black Alligator Clips
• 100mm Plastic tube
• Heat Shrink of 3 different sizes
• Red & Black Rubber to convert the wires

Instructions

1. First we took the wire and stripped both ends
2. Then we soldered the resistor to the wire
3. We soldered the Red Lead to the wire
4. We then soldered the Green Lead to the wire
5. After that I granted the both end of brass and the middle
6. I soldered the Green & Red Lead together on brass
7. Use the black rubber to cover the brass and wire together and then I used the heat gun to to shrink the rubber so we can wrap it all together.

Reflection:

This lesson was good for me, it showed me the importance of Prob Lead testing for off short circuit in Electrical systems and also gave me new ideas on how it can be used.

BATTERY TESTING

This area talks about how to test & check a battery and if it is need for a service or if it needs replacement.

• First is Visual Check
• Checking if any unsafe or any terminal needs to be cleaned or replaced
• Checking if any signs of swelling can cause over charging
• Checking level of Acid or H2S04 if it is on the correct level

Testing specific gravity & the reading before you top up the Cells

You use hydrometer tester

• Cell 1 = reading > 1125 = Red
• Cell 2 = reading > 1275 = Green
• Cell 3 = reading > NO READING
• Cell 4 = reading > 1300 = Green
• Cell 5 = reading > NO READING
• Cell 6 = reading > 1300 > Clear

The battery Gravity failed, this means the battery needs to be replaced.

Testing a Open Circuit Tester

1. Removing Surface Charge
2. When the battery is fully charged, you will need to remove the surface charged and turn on the headlight or anything that draws power away from the alternator. 

Use the volts meter to measure the results with 12.65v 

• 100% > 12.7v
• 95% > 12.6v
• 75% > 12.5v
• 50% > 12.4v
• 25% > 12.2v

The measure of state of charged was 75% > 12.5v

• The battery  is always charged slowly or short fast bursts
• To clean any surface on top the battery like acid or HzSo4
• Use hot water and the baking soda to clean
• Use vaseline to crease the terminals

• To check if the battery needs to be recharged or replaced
• The reading of recharged is = 50% > 12.4v
• The reading of replacing the battery is = 25% > 12.2v

ALTERNATOR ON THE ENGINE TESTING AT SCHOOL

• First Visual checking of the belt
• See if the belt tension is Good
• Check if Belt is cracked or needs replacement
• Mounting of Alternator if not loose

Belt was worn out and needed replacement and was found to have no oil on the belt.