K76992557

Solution K76992557
Friday, November 3, 2017 4:45:06 PM CET
Solution
Title (customer effect)
Chassis Experiencing High soot Accumulation, Abnormal ( Too High, Too Low )
Regeneration Temperatures Following An Aftertreatment Hydrocarbon Injector ( AHI, 7t
h
Cause
Injector ) Nozzle Replacment Procedure
Incorrect part number ( P/N ) AHI nozzle ( 7th Injector ) could have possibly been
installed.
Solution
Model Year ( MY ) US17 changes to the AHI system have been made. MY US17 has been
updated to a High flow nozzle.
The low flow nozzle has been used for North American heavy duty engines since
2011. All US17 11L and 13L engines will now use the high flow nozzle ( 16L
engines will continue to use the low flow nozzle ).
The AHI nozzle tip of the low flow and the high flow nozzle is different in
appearance. Other than this difference, the two nozzles are visually the same.
Solution visibility
Dealer distribution
Function(s)/component(s) affected
Function affected
engine , exhaust
Function Group
Function Group
258 emissions after-treatment
Customer effect
Main customer effect
soot , regeneration , temperature , calibration/programming/pairing/missing operation
, diagnostics/methodology , efficiency/abnormal behavior
Fluid implicated
fuel
Conditions
Vehicle operating mode
Frequency of occurrence of
problem
when driving , when stationary
always
Administration
Author
A241298
Last modified by
RU4469V
Creation date
18-10-2017 16:10
Date of last update
31-10-2017 14:10
Status
Published
NA_MACK_Vehicle_Range
NA_MACK_Vehicle_Ran
ge
Cabover , LR , LEU , MRU , Conventional , CHU , CXU , GU
NA_VOLVO_Vehicle_Range
NA_VOLVO_Vehicle_Ra
nge
Conventional , VNX , VNL , VNM , VHD , VAH
Engine family
Engine family
Volvo , 11L Engine , 13L Engine , Mack , MP7 , MP8
Emission Standard
Emission Standard
2018 , OBD2017 , US17 GHG , US14 CNG , US16 , US15 , US10 , US13 OBD , U
S14 GHG