154415-0420 ZEXEL 9 421 618 735 BOSCH DIAPHRAGM HOUSING 9421618735 1544150420 1157280720

ACTION REQUIRED
Refer to the attached Rework Procedure.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-2000 hrs,
0-24 mo 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
Use the procedures on the following pages in order to apply the updates to your machine.
- Park the machine on a firm, level surface.
- Fully retract and lower the boom.
- Place the travel select lever in the (N) NEUTRAL position.
- Apply Park Brake.
- Shut the engine off and remove the key from the MAIN switch located inside the engine compartment.
- Properly disconnect the battery.
- Place a Do Not Operate Tag on both the ignition key-switch and the steering wheel, stating that the machine should not be operated.
- Allow the engine area and antifreeze to cool down.
- Remove the cab rear cover.
- Use all applicable safety precautions while working on, around or under any machinery.
1. Locate DEF coolant supply hose (1) and DEF coolant return hose (2) on the engine. Refer to Image1.2.1.
Image1.2.1
2. Trace the routing of DEF coolant supply hose (1) on the engine to DEF coolant control valve (3) located in the middle of the frame. Refer to Image1.2.1 and 1.3.1.
Image1.3.1
3. Trace the routing of DEF coolant return hose (2) from the engine to DEF tank (4) located behind rear of the cab. Refer to Image1.2.1 and 1.4.1.
Image1.4.1
4. If the routing of DEF coolant supply hose (1) and DEF coolant return hose (2) are found to be correct, remount the cab rear cover and place the unit back in service.
5. If the routing of DEF coolant line (1) and DEF coolant return hose (2) are found to be incorrect, please continue the next steps to correct the DEF coolant line installation.
6. Remove all the cable straps that securing the two DEF coolant lines together or to other hoses. Refer to Image1.6.1. Some of the parts have been removed for clarity. Cut the 610cm of 5P-0767 Hose into two pieces: 330cm and 280cm.
Image1.6.1
7. Taking all precautions to minimize and contain any antifreeze spillage, disconnect DEF coolant supply hose (1) from DEF coolant control valve (3) and from the engine side DEF coolant supply port. The hose will not be reused. Retain the hose clamps for reuse. Refer to Image1.2.1 and 1.4.1.
8. Disconnect DEF coolant return hose (2) from DEF coolant tank (4) and from the engine side DEF coolant return port. The hose will not be reused. Retain the hose clamps for reuse. Refer to Image1.2.1 and 1.6.1.
9. Identify the new DEF coolant supply hose. It is the shorter