MODULE-EXHAUST TEMPERATURE 3574880 - Caterpillar

Engine:
G3408C (S/N: BAZ1-UP)
G3412C (S/N: 6ZM1-UP)
Generator Set:
G3412 (S/N: KAP1-UP)
Engine News SEBD9527, 28 January 2008, "A Repair Kit for the Air/Fuel Ratio Control is Available ". Disregard the article. The illustrations have been improved. See the article that follows.Over time, the digital display can become unreadable due to discoloration of the film that covers the display. The keypads of some control panels become worn with use. Some keypads are damaged by sharp objects. Some keypads become unusable because of wear and/or damage.The film that includes the keypad can now be replaced with the new 323-0331 Keypad Kit (FUEL RATIO). The kit is shipped in an anti-static bag. The kit includes a film with an integral keypad that is bonded to a metal plate. Eight screws that are slightly longer than the original screws are included for installation of the film and keypad. The kit can be used with either of the following control panels:
213-1986 Engine Electronic Control Gp (FUEL RATIO) (OXYGEN)
308-5087 Engine Electronic Control Gp (FUEL RATIO) (NITROGEN OXIDE)Installing the 323-0331 Keypad Kit (FUEL RATIO)
Illustration 1 g01456733
(1) Small screws that hold the frame to the cover (2) Frame (3) Film and keypad (4) Larger screws that secure the cover to the box
Illustration 2 g01456734
(5) Cover
Remove the electrical power from the control panel.
Remove eight small screws (1). The screws can be discarded.
Remove frame (2). Keep the frame in order to be reinstalled.
Carefully peel the film and keypad (3) from cover (5). A ribbon cable is an integral part of the back of the keypad. Do not damage the connector for the ribbon cable that connects to the circuit board inside the cover. Cut the ribbon cable between the keypad and the circuit board. Discard the old film.
Loosen larger screws (4). Rotate the clips and remove cover (5) from the box. Disconnect the old ribbon cable from the circuit board on the inside of the cover.
Align the new film and keypad (3) with the small holes on cover (5). Ensure that the integral ribbon cable extends through the slot in the cover.
Align the holes in frame (2) with the holes in film (3) and in cover (5). Secure the frame and the film to the cover with the new screws (1) from the kit.
Connect the ribbon cable to the circuit board that is inside of cover (5) .
Install cover (5) onto the box. Make sure that the seal for the cover is sealing the joint between the cover and the box. Align the clips and tighten larger screws (4) in order to secure the cover to the box.
Restore electrical power to the control panel. Resume normal operation.Note: For detailed information on the control panel, refer to the appropriate publication.
Systems Operation, RENR5916, "Air/Fuel Ratio Control (Oxygen Feedback)"
Systems Operation, KENR5186, "Air/Fuel Ratio Control (NOx Feedback)"