Tribeca F6-3.6L (2008)
Alternator: Testing and Inspection
INSPECTION
1. DIODE
CAUTION: Never use a mega tester (designed for reading high voltage) or any other similar instrument for this test; otherwise, the
diodes may be damaged.
1. Checking positive diode
Check for continuity between the diode lead and positive side heat sink. The positive diode is in good condition if resistance is 1 ohm or less
only in the direction from the diode lead to heat sink.
2. Checking negative diode
Check for continuity between the negative side heat sink and diode lead. The negative diode is in good condition if resistance is 1 ohm or less
only in the direction from the heat sink to diode lead.
2. ROTOR
1. Slip ring surface
Inspect the slip rings for contamination or any roughness on the sliding surface. Repair the slip ring surface using a lathe or sand paper.
2. Slip ring outer diameter
Measure the slip ring outer diameter. If the slip ring is worn, replace the rotor assembly.
Slip ring outer diameter:
Standard - 22.7 mm (0.894 in)
Limit - 22.1 mm (0.870 in)
3. Continuity test
Check the resistance between slip rings using circuit tester. If the resistance is not within the standard, replace the rotor assembly.
Specified resistance: Approx. 2.0 - 2.2 ohms
