SEAL ASSEM. 2N8198 - Caterpillar

Engine: 3516C (S/N: SKC1-UP; SCK1-UP; SFK1-UP)Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below. Problem
A 4334-15 event code, Aftertreatment #1 SCR Dosing Reagent Absolute Pressure: High - Least Severe, can be logged if the CEM injector nozzle is plugged or incorrectly assembled.Solution
If a 4334-15 code is logged, proceed with "Aftertreatment #1 SCR Dosing Air Assist Valve Command Override Test". This test is in the "SCR ECM Override Parameters" in Cat ® Electronic Technician (Cat ® ET). Record the "SCR Dosing Reagent Absolute Pressure". This pressure can be seen in "SCR ECM" status screens in the "Pump Electronic Tank Unit" tab.After the test has been completed, contact the Dealer Solution Network (DSN) and ask to be referred to the DSN Tier 2.