HOSE BK 5417118 - Caterpillar

To install new panels or former, repaired panels:
1. Remove two 7Y-7389 Screws (1) that mount the panel to the cab. See Illustration 1.
Illustration 1. (1) 7Y-7389 Screws. (2) Panel. (3) Wiring.2. Disconnect wiring (3) from the back of panel (2).3. Connect wiring (3) to a new (or repaired) panel and install panel to cab with screws (1).Follow these steps if it is determined that a panelcircuit board can be reworked.
Illustration 2. Rear view of panel. (2) Panel. (4) Plastic cover. (5) Screws that retain cover.1. Place removed panel with the front face down. Remove plastic cover (4) by removing five screws (5). Remove circuit board (6).
Illustration 3. Panel with circuit board removed to show button keys (8). After circuit board (6) is removed, be sure to keep the front face of panel down so that button keys (8) will stay in the correct location.
Illustration 4. View of circuit board (6) in panel with fourteen joints (7) shown by shading.2. Solder any of fourteen joints (7) where necessary to repair cracks found in inspection. Apply the solder up to 3.5 mm (.14 in) thick as shown in Illustration 6.
Illustration 5. Cross-section of former solder joint. (6) Circuit board. (9) Circuit track. (10) Pin. (11) Solder. (12) Cracks.
Illustration 6. Cross-section of reworked joint showing new solder build-up to 3.5 mm (.14 in) thickness (A).
Illustration 7. Cross-section of new, improved joint. (9) Circuit track. (11) Solder. (13) Plating.3. Replace repaired board (6) and assemble cover (4) with screws (5). Install panel as described above.