LEVER 8P8041 - Caterpillar

Illustration 1 g02085514
(1) Terminal 2 (2) Terminal 3 (3) 143-5090 Diode in reverse direction
Insert a small flat head screwdriver into the housing for the terminal. Refer to Illustration 1. Repeat this procedure on the other terminal in order to fully release the remaining lead.
Inspect the diode leads for any damage that may have occurred during removal. Replace the diode with a 143-5090 Diode if the current diode has been damaged.
Illustration 2 g02086534
(1) Terminal 2 (2) Terminal 3
Insert the screwdriver into the third terminal and insert the cathode of the diode into the terminal block. Refer to Illustration 2.
Illustration 3 g02086544
(1) Terminal 2 (2) Terminal 3 (4) 143-5090 Diode in correct direction
Insert the screwdriver into the second terminal and insert the anode of the diode into the terminal block. Refer to Illustration 3.
Illustration 4 g02087834
(5) Anode (6) Cathode
Ensure that the diode is secure within the terminal blocks in the correct orientation. Refer to Illustration 4 for the correct orientation of the anode (5) and the cathode (6). Repeat Step 4 through Step 5 if the diode appears to be loose.
Run the generator set in order to ensure that the battery is receiving a charge from the charging alternator.Procedure for a diode that was omitted from production
When servicing or repairing electric power generation equipment:Make sure the unit is off-line (disconnected from utility and/or other generators power service), and either locked out or tagged DO NOT OPERATE. Remove all fuses.
Isolate the generator set prior to starting this procedure.
Open the breaker for the genset.
Activate the emergency stop.
Disconnect the auxiliary power supply for the battery charger and the heaters.
Disconnect the cables for the battery.
Use the appropriate lockout procedure for the generator before starting any work.Note: Ensure that the proper health and safety requirements are followed during the procedure. Also, ensure that you use the proper lockout and tag out procedures at all times while work is performed on the machine.
Illustration 5 g02087013
The 143-5090 Diode is shown in a "U" shape.
Remove one of the 143-5090 Diode from the packaging. Cut the leads to approximately 20 mm (0.78 inch). Bend the leads to 90 degrees by using a pair of needle nose pliers in order to make the shape of a "U".
Illustration 6 g02086534
(1) Terminal 2 (2) Terminal 3
Insert the screwdriver into the third terminal and insert the cathode of the diode into the terminal block. Refer to Illustration 6.
Illustration 7 g02086544
(1) Terminal 2 (2) Terminal 3 (4) 143-5090 Diode in correct direction
Insert the screwdriver into the second terminal and insert the anode of the diode into the terminal block. Refer to Illustration 7.
Illustration 8 g02087834
(5) Anode (6) Cathode
Ensure that the diode is secure within the terminal blocks in the correct orientation. Refer to Illustration 8 for the correct orientation of the anode (5) and the cathode (6). Repeat Step 4 through Step 5 if the diode appears to be loose.
Run the genset in order to ensure that the battery is receiving a charge from the charging alternator.