Identify the Cause fo a Noisy 1-BOX Aftertreatment for Detroit Diesel GHG14

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This instruction show you guide on how to identify the cause of a Noisy 1-BOX aftertreatment for Detroit Diesel EPA01 10 GHG14 engine.

 

Related Contents:

2023 Detroit Diesel Diagnostic Link DDDL 8.17 8.09 Free Download

JPRO DLA+ 2.0 Adapter

NEXIQ USB Link Adapter

 

Steps:

1 Visually inspect the entire exhaust system for signs of leaks or damage. Is any damage found?

1a Yes; repair as necessary.

1b No; Go to step 2.

 

2 Inspect that the aftertreatment inlet heat shields are not broken loose and rattling. Is there a loose or damaged heat shield?

 

2a Yes; repair the heat shield. If the inlet heat shield has tabs, refer to 11 TS-6 .

2b No; Go to step 3.

 

3 Inspect the inboard and outboard Diesel Particulate Filter (DPF) covers and verify nothing is loose or rattling. Is there a loose DPF cover?

 

3a Yes; repair the loose cover.

3b No; Go to step 4.

 

4 Turn off engine after inspection.

 

5 Disconnect the aftertreatment inlet pipe and start the engine to verify the noise is coming from the aftertreatment. Did the noise go away once the aftertreatment inlet pipe was disconnected?

5 a Yes; reconnect the aftertreatment inlet pipe and Go to step 6.

5 b No; inspect other truck components to identify the noise.

 

6 Connect DiagnosticLink 8.18.

7 Start the engine and run a Parked Regen. Monitor Diesel Oxidation Catalyst (DOC) inlet pressure and engine speed during the regen.

8 Review the last seven minutes of the parked regeneration log data. The illustration below identifies the last seven minutes of the parked regen.

 

 

9 Is the Selective Catalyst Reduction (SCR) inlet temperature lower than SCR outlet temperature by more than 38

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