Tool it PBT 812 Manual De Uso página 20

Operating manual
IDLE TEST RESULTS
1. CHARGING SYSTEM NORMAL WHEN TESTING AT IDLE
The system is showing normal output from the alternator. No problem is detected.
2. HIGH CHARGING VOLTS WHEN TESTING AT IDLE
The voltage output from the alternator to the battery exceeds the normal limits of a functioning regulator.
Check to ensure there is no loose connection and the ground connection is normal
If there is no connection issue, replace the regulator. Since most alternators have the regulator built-in, this will
require you to replace the alternator. The normal high limit of a typical automotive regulator is 14.7 volts +/-
0.05. Check manufacturer specifications for the correct limit, as it will vary by vehicle type and manufacturer.
3. LOW CHARGING VOLTS WHEN TESTING AT IDLE
The alternator is not providing sufficient current to the battery. Check the belts to ensure the alternator is rota-
ting with engine running.
If the belts are slipping or broken, replace the belts and retest. Check the connections from the alternator to
the battery. If the connection is loose or heavily corroded, clean or replace the cable and retest. If the belts
and connections are in good condition, replace the alternator.
RIPPLE TEST RESULTS
1. RIPPLE DETECTED NORMAL
Diodes function well in the alternator / starter.
2. NO RIPPLE DETECTED
Ripple is not detected.
3. EXCESS RIPPLE DETECTED
One or more diodes in the alternator are not functioning or there is stator damage. Check to ensure the alter-
nator mounting is sturdy and that the belts are in good shape and functioning properly. If the mounting and
belts are good, replace the alternator.
LOAD ON TEST RESULTS
1. CHARGING SYSTEM NORMAL WHEN LOAD ON TESTING
The system is showing normal output from the alternator. No problem detected.
2. CHARGING SYSTEM HIGH WHEN LOAD ON TESTING
The voltage output from the alternator to the battery exceeds the normal limits of a functioning regulator.
Check to ensure there are no loose connections and that the ground connection is normal. If there are no
connection issues, replace the regulator. Since most alternators have the regulator built-in, this will require
you to replace the alternator.
3. CHARGING SYSTEM LOW WHEN LOAD ON TESTING
The alternator is not providing sufficient current for the system's electrical loads and the charging current for
the battery. Check the belts to ensure the alternator is rotating with the engine running. If the belts are slipping
or broken, replace the belts and retest.
Check the connections from the alternator to the battery. If the connection is loose or heavily corroded, clean or
replace the cable and retest. If the belts and connections are in good working condition, replace the alternator.
20
Translation of the original
instructions
PBT 812