5130, 5130B and 5230 Excavators, 784B, 785B, 785C, 789B, 789C, 793B and 793C Off-Highway Truck/Tractors and 992G, 994 and 994D Wheel Loaders Vital Information Management System (VIMS) Caterpillar


Diode Assembly - Test

Usage:

793B 1HL


Illustration 1g00509113
Connector A (Typical Example)

  1. Disconnect the diode assembly from the machine harness.

  2. Set the 6V-7070 Digital Multimeter on the diode test function. Connect the one meter lead to contact 1 of connector "A". Connect the second meter lead to contact 2 of connector "A". The meter should indicate OL or 0.3 to 0.9 DCV.

  3. Reverse the meter leads. If the first reading was 0.3 to 0.9 DCV, the second reading should be OL. Replace the diode assembly if the diode assembly does NOT test correctly.

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