Battery - Electrical Test (A.30.A.83 - F.40.A.50); 435, 445, 445Ct - Case 435 Repair Manual

Battery - Electrical test (A.30.A.83 - F.40.A.50)

435, 445, 445CT

This test can be done using a variable load tester such as the Sun Electric VAT-33. Other test equipment can be
used. Connect the test equipment according to the instructions of the manufacturer of the equipment.
CAS10147 The CAS10147 tester is used to do the Capacity (load) Test.
The level of charge of the battery must be at least 75 %. Do the Specific Gravity Check in this section.
Prepare the tester (Sun Electric VAT-33 shown) for the test.
1. Select the voltmeter range that will measure 1 to
18 volts.
2. Make sure the load control knob is in the OFF
position.
3. Select the ammeter range that will measure 0 to
1000 amperes.
4. Move the volt lead switch to the NT. position.
5. Connect the tester to the battery as shown.
(1) Load Control Knob
(2) Ammeter Clamp (Tip of Arrow Away From
Battery)
NOTE: Never apply a load for longer than 15 seconds.
After each 15 seconds, turn the load control knob to OFF
for a least one minute.
6. Apply a 15 ampere load to the battery for 15
seconds. Wait at least three minutes before
applying the load again.
7. Check and make a record of the temperature of the
electrolyte.
NOTE: The correct load is half of the cold cranking
amperes at -17 °C (0 °F).
DISTRIBUTION SYSTEMS - ELECTRICAL POWER SYSTEM
1 04/05/2005
A.30.A / 95
1
B795328
2
B790499