Fitting Procedure Checks

When changing a DPF unit the following components must be checked and replaced if necessary to validate any warranty claims:

1. DPF pressure pipes and sensors – check to make sure all pipes are free from damage or blockages and all sensors are operating correctly.

2. Oil level – if oil level is high this could be a sign it’s been contaminated with fuel from failed regeneration attempts, if this is present an oil and filter is required.

3. Oil specification – check the correct low ash oil has been used

4. Fuel additive (where applicable) – check the level of additive, if required fill up the tank. Normally a manufacture’s procedure must be followed to reprogram the ECU.

5. Sensor checks – check all sensors to ensure they are operating correctly, replace if necessary.

6. EGR system – check the exhaust gas recirculation valve is working correctly and that the EGR pipe is free from damage or blockages.

7. MAF sensor – check for fault codes as this can cause over-fuelling issues and the engine to create a higher soot volume and can lead to premature DPF failure

8. Engine and turbo wear – Build-up of carbon or soot present? Clean where applicable

9. Injectors (In case they are leaking) – check diagnostic report to ensure no faults present

10. Glow plug condition – change if required

11. ECU should also be checked for any malfunctions/ Fault codes and ECU needs to be reset to the new DPF parameters – print outs should be made available upon request

Note – you must read and understand the DPF (FAP) Guide to Fitting for the Professional before attempting to fit your DPF (see link Guide To Fitting New Unit)

Your Warranty will be void if you have incorrectly fitted or failed to note the procedure above
You must be competent and have the correct technical back up to fit these units or you must take to a professional installer