Charger Testing
E30 and D40
Series

Charger testing

• You will need a Digital 
  Volt Ohm Meter
   

Charger Testing

• 2 Jumper Wires with
  Alligator Clip on each
  end
• A 13mm Wrench 
   

1. Turn the Key Switch off,
   remove cover(s) as needed,
   this will provide access to the 
   Charger & Batteries

Preforming an AMP Draw Test

3. Position your Meter Test Leads to
be able to perform an AMP Draw
Test.
Then set your meter to 20 AMPs or 
Greater

To Prevent damage to your meter.

Ensure your Meter is capable of
20Amps or greater

3. Secure the Positive meter lead
with an alligator clip to the Positive
Red Charger wire you removed.

4. Secure the Negative Meter Lead
to the Stud that you removed the
wire from. Your Volt OHM Meter is
now in Series between the Charger
and the power cable.

5. Plug the A/C cord in and see the
Charger Amperage Output. 

6. Unplug the A/C Cord from the
charger, then reassemble the truck
in the reverse procedure. 

Performing a Charger Voltage Test

8. Ensure your meter leads are in the
proper meter location to perform a 
Voltage Test, set to 200v D/C

9. Connect the jumper wires to the
Main Battery Positive & Negative
terminal ends by sliding it under the
eyelet next to the battery post

10. Note the Static Voltage
With the Charger Disconnected.

11. Plug the Battery Charger in and
You should see A Voltage increase

12. If you see an Increase in Amperage

A Voltage Rise with the Charger
connected

This confirms the Battery Charger is 
operational


NOTE: NEVER DISCONNECT THE CHARGER FROM THE WALL WITH THE KEY ON AND THE POWER DISCONNECT ON.

*Click on link to see original document:

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