HOUSING 5S5779 - Caterpillar

Illustration 1 g03689775
Cleaning the Diesel Particulate Filter (DPF)
Table 1
Record of DPF Cleaning    
Customer Name _______________
Initial Install Date _______________
Machine Model _______________
Machine Serial Number _______________
Machine Fleet Number _______________
EIN _______________
Filter Serial Number _______________
Filter Part Number _______________
Catalyst Module Number _______________
Catalyst Part Number _______________
Initial Engine Hours _______________
Initial Back Pressure at a Full Throttle, No-Load condition (Specify Units) _______________    
Cleaning Date                                    
Engine Hours                                    
Pre-Bake Weight (kg/lbs)                                    
Post-Bake Weigh (kg/lbs)                                    
Weight After Pulsed Air (kg/lbs)                                    
Pre-Clean Back Pressure (Specify Units)                                    
Post-Clean Backpressure (Specify Units)                                    
Cleaning Entity                                    
Name/Initials of Technician                                    Cleaning the DPF
Because the sections of the DPF are replaceable, a small stock of filter sections can be maintained. Filter sections from a small on-hand stock can be used to replace filters in service at the next scheduled cleaning. The removed filters can be cleaned and returned for installation in the next vehicle. This process of maintaining a stock of filter sections can significantly reduce the amount of down time that will occur.Note: Check State and Local air pollution regulations pertaining to record keeping of serviced filters. Some governmental entities may require filter tracking. Note: Perform a back pressure test prior to cleaning the DPF and record the results. After cleaning the DPF, run the engine at high idle for 5 to 15 minutes to bring the engine and exhaust system to operating temperature. Perform another back pressure test and record the results on the DPF cleaning records form.
Weigh and record the filter unit prior to baking.
By baking the filter under a controlled procedure, the remaining soot on the DPF will burn off and leave a smaller quantity of ash. Failure to observe this procedure can result to damage or cracking to the DPF substrate. A commercial programmable oven is required for this procedure. Careful adherence to this procedure is imperative. Deviation from this procedure may lead to thermal shock and cracking of the DPF substrate or melting at high temperatures.
Place filter into a programmable commercial oven designed for this purpose. Center the filter as much as possible on a rack with 2 inches of spacing below and above for best results.
Program