LEVER & BUSHING AS 3475047 - Caterpillar

This Revised Service Letter replaces the 04Oct2017 Service Letter. Changes have been made to the Affected Product.
TERMINATION DATE
31Oct2019
PROBLEM
The 3905194/">390-5194 Exhaust Gas Valve Gp can fail on certain AP1000F and AP1055F Asphalt Pavers. The fault may result in the valve being off-center when not powered. The fault may result in the valve not moving when commanded. The faults result in the aftertreatment system being unable to regenerate and may be indicated by one of the following event codes:
E1263 Engine Exhaust Back Pressure Regulator Not Responding to Command
E1265 DPF Active Regeneration Inhibited Due to Low Exhaust Gas Pressure
E1645 Aftertreatment Active Regeneration Inhibited Due to Low Exhaust Pressure
The updated engine software provides improvements for BPV control, DEF level strategy, DEF quality sensor strategy, DEF injector strategy and SCR storage model, and ether injection quantity.
AFFECTED PRODUCT
Model Identification Number
AP1000F AC400100-00342, 344
AP1055F TJ500100-00692
PARTS NEEDED
Qty
Part Number Description
1 3595885 CLAMP AS.
1 3905194 VALVE GP-EXHAUST
1 5407232 SFWR GP-A1000
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 1% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.
ACTION REQUIRED
Follow the Troubleshooting procedures for the active event codes. If a fault is found with the exhaust back pressure valve, install a replacement 3905194/">390-5194 Exhaust Gas Valve Gp. Refer to Disassembly and Assembly, "Exhaust Back Pressure Valve - Remove and Install".
Reflash the engine controller (ECM) with the software listed in the Parts Needed or latest available on SIS Web.
SERVICE CLAIM ALLOWANCES
Product smu/age whichever comes first Caterpillar Dealer Suggested Customer Suggested
Parts % Labor Hrs% Parts % Labor Hrs% Parts % Labor Hrs%
0-5000 hrs,
0-60 mo 100.0% 100.0% 0.0% 0.0% 0.0% 0.0%
This is a 1.8-hour job
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.