PLATE & FILM GP 2565354 - Caterpillar

Recommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in the order of the listed test steps.
Table 6
Troubleshooting Test Steps    Values    Results    
1. Check the DEF Tank for the Proper Level
   
Tank level
   
Result: The DEF tank has the proper level.
Proceed to Test Step 2.
Result: The DEF tank does not have the proper level.
Repair: Fill the DEF tank as needed.
Verify that the repair eliminates the problem.
   
2. Check the DEF Supply Pump for Normal Operation.
   
Normal pump operation
   
Result: The DEF supply pump is operating correctly.
Proceed to Test Step 3.
Result: The DEF supply pump is not operating correctly.
Repair: Repair or replace the DEF supply pump as needed.
Verify that the repair eliminates the problem.
   
3. Verify that the DEF Supply Pump is the Correct Size for the Unit
    Correct size of pump    
Result: The DEF supply pump is the correct size.
Proceed to Test Step 4.
Result: The DEF supply pump is not the correct size.
Repair: Repair or replace the DEF supply pump as needed.
Verify that the repair eliminates the problem.
   
4. Inspect the DEF Supply and Outlet Lines for Visible Cracks
   
Cracks
   
Result: The DEF supply and outlet lines are cracked.
Repair: Repair or replace the air supply lines to the dosing cabinet as needed.
Verify that the repair eliminates the problem.
Result: The DEF supply and outlet lines are not cracked.
Proceed to Test Step 5.
   
5. Inspect the DEF Supply and Outlet Lines for Debris and Contamination
A. Remove the DEF supply lines from the inlet of the cabinet.
B. Inspect the DEF supply and outlet lines for debris and contamination.
    Debris or Contamination    
Result: The DEF supply and outlet lines have debris or contamination.
Repair: Repair or replace the DEF supply and outlet lines as needed.
Verify that the repair eliminates the problem.
Result: The DEF supply and outlet lines do not have any debris or contamination.
Proceed to Test Step 6.
   
6. Check the Y-sediment Strainer for Debris and Contamination.
    Debris or Contamination    
Result: The Y-sediment strainer has debris or contamination.
Repair: Repair or replace the Y-sediment strainer as needed.
Verify that the repair eliminates the problem.
Result: The Y-sediment strainer does not have any debris or contamination.
Proceed to Test Step 7.
   
7. Check the DEF Dosing Pump for Normal Operation
    Normal pump operation    
Result: The dosing pump is operating correctly.
STOP
Result: The dosing pump is not operating correctly.
Repair: Repair or replace the DEF dosing pump as needed. Refer to dealerconnect.cat.com for more information on the GRUNDFOS ALLDOS DATA BOOKLET.
Note: Check calibration prior to repairing the pump.
Verify that the repair eliminates the problem.
   Solenoids Are Not Functioning
Probable Causes
Crystallized DEF
Electrical faultRecommended Actions
Sometimes DEF can back flush into a dosing cabinets plumbing and crystallize inside different components.Without the air solenoid being open does two things:1. DEF will crystallize in the delivery system2. DEF will not atomizeWhile the engine is not generating power, the dosing cabinet should be in "Standby" mode. If the air or purge gauge is showing air pressure or the sound of air is leaking through the system,