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HOSE AS 3966933 - Caterpillar



3966933 HOSE AS Caterpillar parts HOSE
Rating:
46
Alternative (cross code) number:
CA3966933
396-6933
3966933
Caterpillar 3966933 HOSE AS

Buy HOSE AS 3966933 Caterpillar genuine, new aftermarket tractor parts with delivery

Number on catalog scheme: 10
 
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Test Step 1. Determine the Code
Connect Caterpillar Electronic Technician (ET) to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools", if necessary.
Determine if a diagnostic trouble code is present. Results:
Active E096(2) - The E096(2) is active or logged. Proceed to Test Step 2.
Unrelated Code Present - Unrelated codes are present.Repair: Troubleshoot the code. Refer to the proper troubleshooting procedure. STOPTest Step 2. Compare the Status of Fuel Pressure in Cat ET to a Mechanical Gauge
Table 2
Required Tooling
Quantity Part Number
1 8T-7860 Connector
1 110-6349 Fitting As
1 8T-0855 Pressure Gauge
1 6V-3990 Coupler
Illustration 1 g02051497
Secondary fuel filter mounting
(1) Fuel temperature sensor
(2) Fuel filter differential pressure sensor
(3) Fuel pressure sensor (filtered fuel pressure) Note: Do not use the sampling port for measuring the fuel pressure.
Record the fuel pressure from Cat ET. Record the data in Table 3.
Remove fuel pressure sensor (3).
Install a 8T-7860 Connector into the port of the pressure sensor (3).
Install the 110-6349 Fitting As onto the 8T-7860 Connector.
Install a 8T-0855 Pressure Gauge onto a 6V-3990 Coupler.
Install the 6V-3990 Coupler onto the 110-6349 Fitting As.
Record the fuel pressure on the pressure gauge. Record the data in Table 3.
Table 3
Engine RPM Fuel Pressure from Cat ET Fuel Pressure from the Mechanical Gauge
700
1850 Expected Result:The value of the fuel pressure is within 137 kPa (20 psi) of the fuel pressure reading that is shown in Cat ET.Results:
OK - The pressures are comparable. Proceed to Test Step 3.
Not OK - The value of the fuel pressure is not within 137 kPa (20 psi) of the fuel pressure reading that is shown in Cat ET.Repair: Replace the pressure sensor. Verify that the problem has been resolved.If the problem is not resolved, proceed to Test Step 3.Test Step 3. Inspect the Fuel Lines
Illustration 2 g02140753
Fuel lines
Visually inspect the fuel lines between the primary filter base and the inlet to the cylinder head. Also, inspect the fuel cooler, if equipped. Inspect the fuel return lines from the cylinder head to the fuel tank. Inspect the lines for restrictions, pinching, and swelling. Expected Result:The fuel lines and the cooler (if equipped) are in good repair.Results:
OK - The fuel lines are OK. Proceed to Test Step 4.
Not OK - The fuel lines and the cooler (if equipped) are not OK.Repair: Perform the necessary repairs. Verify that the problem has been resolved.If the problem is not resolved, proceed to Test Step 4.Test Step 4. Replace the Fuel Pressure Regulator
Illustration 3 g02140923
Location of the fuel pressure regulator
Contact with high pressure fuel may cause fluid penetration and burn hazards. High pressure fuel spray may cause a fire hazard. Failure to follow these inspection, maintenance and service instructions may cause personal injury or death.
Replace the fuel return pressure regulator.
Use Cat ET to check if the original code remains active. Expected Result:The code is no longer active.Results:
OK - The code is no longer active.Repair: The fuel pressure is within specifications. Return the engine to service.STOP
Not OK - The original code remains active. Proceed to

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