Usage:
Challenger 75C (4KK),
Challenger 85C (9TK) Agricultural Tractors
- SUPPLEMENT: FEBRUARY 1, 1999
Service Magazine SEPD0429, Article 4, Page 3, August 10, 1998; "Fuel Pressure Monitoring".
Disregard this article. See Service Magazine SEPD0456, Article 6, Page 5 titled "New Flash Files Require Pressure Sensor Relocation".
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It is important to monitor the engine fuel pressure on these tractors. This article describes a procedure to convert an unused oil pressure sensor into a fuel pressure sensor. Once the conversion is made, fault code 63 will be displayed if low fuel pressure is detected for more then 30 seconds. The light will go off if fuel pressure goes back up to the normal level.
Conversion Procedure
Illustration 1. (RIGHT SIDE VIEW) Location where oil pressure sensor (1) is removed.
1. With the engine stopped, disconnect sensor wiring harness (A) from the 3E-7570 Oil Pressure Sensor (1). Remove the oil pressure sensor (1), 3E-2332 Elbow (2), 6V-5049 O-Ring Seal (3) and 6V-5048 O-Ring Seal (4) from the cylinder block. Retain the sensor (1).
2. Install a 9S-4191 Plug and 6V-5049 O-Ring where the elbow (2) was removed from the cylinder block.
3. Reroute the sensor wiring harness (A) from the oil pressure location around to the fuel filter. Use tie straps as required to secure the sensor wiring harness in the new location.
Location to install fuel pressure sensor in fuel filter base assembly.
4. Remove the plug (5) and O-ring seal (6) from the fuel filter base (7).
5. Use a 9X-0626 Adapter and two 3J-7354 O-Ring Seal to install the sensor (1) in the fuel filter base (1).
6. Connect the sensor wiring harness (A) to the sensor (1).