K76992557

Solution K76992557
Wednesday, September 26, 2018 9:30:26 PM CEST
Mack Models
Mack Model
TE-TerraPro , LR , LEU , MRU-TerraPro , GR-Granite , PI-Pinnacle , AN-Anthem ,
CHU-Pinnacle, Axle back , CXU-Pinnacle, Axel forward , GU-Granite , TD-Titan
Volvo Models
Volvo Model
VNR , VT , VNX , VNL , VNM , VHD , VAH
Engine family
Engine family
Volvo , 11L Engine , 13L Engine , Mack , MP7 , MP8
Emission Standard
Emission Standard
2018 , OBD2017 , US17 , US14 CNG , US16 , US15 , US10 , US13 OBD , US14
** SOLUTION **
Title
Aftertreatment Hydrocarbon Injector (AHI, 7th Injector) Changes Between US10 And
US17 (GHG17, Common Rail Fuel System) - Chassis Experiencing High soot
Accumulation, Abnormal ( Too High, Overtemp, Too Low ) Regeneration Temperatures
Following An Aftertreatment Hydrocarbon Injector Nozzle Replacement Procedure
Cause
Solution
Incorrect part number ( P/N ) AHI nozzle ( 7th Injector ) may have been installed.
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 are 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
Fuel Dosing , DOC , DPF
Function Group
Function Group
258 emissions after-treatment
Customer effect
Main customer effect
soot , regeneration , temperature , 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
04-09-2018 18:09
Status
Published
Average score
5
Number of scores
1