Transcript Wilson Electric - Total Truck Parts

Why Check the System
I Know What’s Wrong!
We all have Test Equipment
But We All Use These Testers!
Our Favorite Testers!
Question
If the units are 100% tested at the factory,
why do I seem to get so many bad units?
I
Question
If the units are 100% tested at the factory,
why do I seem to get so many bad units?
1) I’m Just Lucky!
2) The Units Were Damaged In Shipment.
3) The Units Are Cataloged Wrong.
4) They Don’t Really Test Them At The Factory
5) The Units Are Not Really The Problem
I
Answer!
The product you receive has nothing to do with
luck, and while occasionally products can be
harmed in route, and cataloging errors can
happen. We take every possible step to ensure
the quality of the product we sell, and the vast
majority of problems can be traced to some
other member of the electrical team on the
vehicle.
Warranty Returns
1) 55% of all DEFECTIVE alternators function perfectly
2) 52% of all DEFECTIVE starters function perfectly
2013 Core Testing
Testing of the cores returned in 2013 show that over 33% of all
cores tested good!
That’s 1 in 3 times were the replacement of the unit did not fix
the problem
Most Alternator/Starter failures can be traced back to bad
connections
Which Testers Do You Think Got Used?
Educational Stuff
The Charging Team
The Charging System is much more than just the Alternator.
1) Alternator
2) Battery
3) Cables
4) Tensioner
5) Belt
Alternator!
What an Alternator Does
1) Maintains the Battery
2) See Rule #1
What an Alternator Does Not Do
1) Charge Batteries with Low Voltage
2) Run the Vehicle’s Electrical System
What is an Alternators Nemesis?
• Weak Batteries
• Low Voltage
• Wiring
• Frayed, corroded, loose
• The Elements
• Water, Oil, Dust, Heat
Voltage Drop Test
Why Is This Important?
If we have a .8 volt drop on the ground side. The alternator
is only “seeing” 11.8 volts on a fully charged 12.6 volt
battery.
• Resulting in alternator going wide open to correct drop
• Alternator Overheats
• Alternator Fails!
When replacing a Alternator/Starter always do a voltage drop test first.
Most times the original failure is caused by those bad connections
Battery
Why is a Battery Like a Glass of Beer?
Why is a Battery Like a Glass of Beer?
Result – New Battery Can Be Installed at 70%
Battery State of Charge
12.6 or Higher = 100% Charged
12.4 or Higher = 75% Charged
12.2 or Higher = 50% Charged
12.0 or Higher = 25% Charged
Less than 12.0 = Discharged
Battery State of Charge
Diagnosis has to be Systematic!
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Always check battery first!
Check for 12.6 volts at battery
Load test battery
Check belt tension – is it loose?
Check cables and connections
Things to know about a Starter
The Starter’s Enemies
• Low Voltage
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Dead or undercharged batteries
• Poor Grounding
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Loose cables
Poor mounting
Corroded
• Earth, Wind and Fire
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Dirt, water, oil, heat, salt etc…
Mounting Ground
Largest grounding surface on a
Starter is the mounting flange.
What’s wrong with this picture?
Clean Block and Starter
surface!
Cables and Terminals are Critical
Always Buy Quality Cables
If making your own cables, Solder and Heat Shrink
00 Cables solve a lot of problems….Bigger is Better!
Take the time and do it RIGHT the first time!
Simple Things to Prevent 1 in 3
Simple Things to Prevent 1 in 3
Alternator
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Proper Amperage
Check Wires
Start with Charged Batteries/ Charging
Station
Simple Things to Prevent 1 in 3
Alternator
•
•
•
Proper Amperage
Check Wires
Start with Charged Batteries/ Charging
Station
Starter
Start with “GOOD GROUND”
Check Cables
Questions?
Thank you