LINES GP-HYDRAULIC 9V9324 - Caterpillar

table
TERMINATION DATE
14Oct2006
PROBLEM
These engines need a diode added inline to the air shutoff drive wire in the harness, 134-6316, to prevent the emergency stop button from back-feeding power into the A3 engine control module when depressed.
AFFECTED PRODUCT
Model Identification Number
3508B CBB00350-00396
3512B 4AW01090-01105,4AW01107-01118,4AW01120-01125
PTM00434-00435
PARTS NEEDED
Qty
Part Number Description
2 1863735 PIN-CONNECTOR
1 1552271 PLUG KIT-CONN
1 1230316 DIODE AS
ACTION REQUIRED
Refer to the rework procedure below.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-5000 hrs 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 2.0 hour job
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Rework Procedure
1. Locate wire, (ES-5/F708H/CONNA-15), in the harness. This will be one of the
two wires coming off of ES-5. Be sure you get the right wire, since there are two yellow wires coming off of ES-5 (See Picture below)
2. Cut the wire in two and add two 8t-8729 sockets to each end.
3. Insert the wire coming from ES-5 into spot 4 of the connector, 155-2272. (Note, it is very important to plug the wires into the correct spots due to the diode
only allowing voltage to go in one direction)
4. Insert the wire coming from CONNA-15 into spot 1 of the connector, 155-2272.
5. Plug the diode assembly, 123-0316, into the connector, 155-2272.
6. Tie strap the diode assembly to the harness. (See Picture below)
After installation of the diode above, test the unit with the following steps:
1. With the engine control switch in the OFF/Reset position, apply power to the
engine.
2. Place the engine control switch to the Stop/Cooldown position.
3. Measure voltage between Terminal Blocks 2 and 3 (You should see around 24 Vdc)
4. Depress the Emergency Stop Button (Do not pull the button back out)
5. Measure voltage between Terminal Blocks 2 and 3 (You should see 0 Vdc).
6. If you see 0 Vdc, your update is done. Reset the Emergency Stop button. If
you still see 24 Vdc go back and follow