Table 2. BATTERY TROUBLESHOOTING GUIDE (Continued)
DURING TESTING (POWER STEERING
MOTOR RUNNING)
MORE THAN .05 VOLTS LESS THAN .05 VOLTS
|
↓
|
↓
——
|
↓
LOCATE PROBLEM CELL OR CELLS.
CHECK ELECTROLYTE
——
|
↓
BATTERY IS IN GOOD CONDITION
|
CORRECT INCORRECT |
|
↓
|
↓
|
|
REPLACE BATTERY. CONTACT BATTERY
VENDOR
———→
RE-DO TEST OBJECTIVES
1, 2 AND 3
|
|
|
|
|
|
CORRECT
|
|
|
↓
|
↓
BATTERY IS IN GOOD CONDITION
—————→
5 SHORTED CONDITION TO POWER
CABLES / TRUCK WIRING TEST
|
↓
——
|
|
CHECK FOR SHORTED CONDITION TO POWER
CABLES - USING THE VOLT/OHMMETER DC + 10,000
SCALE. ONE LEAD TO BATTERY CABLE RECEPTACLE
(NOT BATTERY SIDE) TO TRUCK FRAME. READING
SHOULD BE 30,000 OHMS OR HIGHER - FOR EACH
CABLE
——
|
|
|
↓
|
↓
LESS THAN 30,000 0HMS MORE THAN 30 0HMS
|
↓
|
↓
CHECK ALL POWER CABLES AND
DIRECTIONAL CONTACTORS FOR
POSSIBLE CARBON BUILD-UP IN DRIVE
MOTOR
POWER CABLES ARE GOOD
|
↓
TRUCK SIDE WIRING TEST
|
↓
TO CHECK FOR SHORTED CONDITION IN TRUCK WIRING SIDE,
PLACE VOLT/OHMMETER ON RX 1 SCALE, CONNECTING POS./NEG.
METER LEADS ACROSS TRUCK SIDE BATTERY RECEPTACLE (SW.
OFF). READING SHOULD BE LESS THAN 30 0HMS
|
|
|
|
LESS THAN 30 0HMS MORE THAN 30 0HMS
|
↓
|
↓
CHECK FOR SHORTED
CONDITIONS IN TRUCK
WIRING
MORE THAN 30 OHMS
READING INDICATES THAT
THERE IS NO PROBLEM
WITHIN TRUCK WIRING
|
↓
|
↓
FOR ADDITIONAL INFORMATION CONTACT NACCO SERVICE HELP
DESK
Note: Occasionally, a battery failure will occur due to thermally induced
stress. Since this type of defect does not occur until the battery has
operated under a full loaded condition, for several minutes or hours, it may
be required to monitor the discharge cycle.
Troubleshooting 2240 YRM 0001
20
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