ADAPTER GP 2838151 - Caterpillar

Table 3
Required Tooling    
8T-7860 Connector    
110-6349 Fitting as    
8T-0855 Pressure Gauge    
6V-3990 Coupler    
Illustration 1 g02023390
(1) Fuel temperature sensor (2) Fuel sampling port (3) Fuel pressure sensor (4) Fuel filter base
Table 4
Engine RPM     Fuel pressure from Cat ET     Fuel pressure from the mechanical gauge    
800            
1800            Note: Do not use the fuel sampling port (2) for measuring the pressure. Follow the steps below.
Table 5
Troubleshooting Test Steps    Values    Results    
4. Check the Fuel Pressure Sensor
A. Record the fuel pressure from Cat ET. Record the data in Table 4.
B. Remove fuel pressure sensor (3) .
C. Install an 8T-7860 Connector into the port of the pressure sensor (3) .
D. Install the 110-6349 Fitting as onto the 8T-7860 Connector .
E. Install an 8T-0855 Pressure Gauge onto a 6V-3990 Coupler .
F. Install the 6V-3990 Coupler onto the 110-6349 Fitting as .
G. Record the fuel pressure on the pressure gauge. Record the data in Table 4.
   
Fuel Pressure Sensor
   
Result: The gauge value of the fuel pressure is within 137 kPa (20 psi) of the fuel pressure reading shown in ET.
Proceed to Test Step 5.
Result: The gauge value of the fuel pressure is not within
137 kPa (20 psi) of the fuel pressure reading shown in ET.
Replace the pressure sensor. Reset all active codes and clear all logged codes by cycling the keyswitch to the Off position. Verify that the problem has been resolved.
If the problem is not resolved, proceed to Test Step 5.
   
Table 6
Engine RPM     Minimum acceptable fuel pressure    
800    
360 kPa (52 psi)    
1800    
450 kPa (65 psi)    
Table 7
Troubleshooting Test Steps    Values    Results    
5. Verify that the Fuel Pressure Is Within Specifications
A. Verify that the recorded fuel pressure is above the minimum acceptable fuel specifications. Refer to Table 6 for the minimum acceptable specifications.
   
Fuel pressure
   
Result: The fuel pressure is above the minimum acceptable fuel specifications.
Proceed to Test Step 7.
Result: The fuel pressure is not above the minimum acceptable fuel specifications.
Proceed to Test Step 6.
   
6. Replace the Fuel Filters
A. Replace the primary filter, the secondary filter, and the tertiary fuel filters.
The fuel system will need to be primed after the filters are replaced.
B. Reset all active codes and clear all logged codes by cycling the keyswitch to the Off position. Verify that the fuel pressure is above the minimum acceptable pressure specifications. Refer to Table 6 for the proper specifications.
   
Fuel filters
   
Result: The fuel pressure meets the minimum acceptable fuel pressure specifications.
Return the engine to service.
Result: The fuel pressure does not meet the minimum acceptable fuel pressure specifications.
Proceed to Test Step 7.
   
7. Check for Air in the Fuel System
A. Check for air in the fuel. Refer to Systems Operation/Testing and Adjusting, "Air in Fuel - Test" for the proper procedure.
   
Air
   
Result: Air is in the system.
Refer to Systems Operation/Testing and Adjusting, "Air in Fuel - Test" for