RING 9S8877 - Caterpillar

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, PERJ1017, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Specifications
Table 1
Parameter Value
DEF Collected 170 to 190 mL (5.8 to 6.5 oz) Introduction
Use this procedure to check the Diesel Exhaust Fluid (DEF) injectors.Required Tools
Table 2
Required Tools
Part Number Part Name Qty
441-0451 Tool Gp 1
N/A LOCTITE® C-5A Copper Antiseize
Illustration 1 g06300573
The DEF injectors are on the inlet of the Clean Emissions Module (CEM). There are injectors on both inlets of the dual CEM applications.
(1) Aftertreatment #2 DEF pump #1 DEF injector #2 (yellow)
(2) Aftertreatment #2 DEF pump #2 DEF injector #1 (red)
(3) Aftertreatment #1 DEF pump #1 DEF injector #2 (blue)
(4) Aftertreatment #1 DEF pump #2 DEF injector #1 (green)
Illustration 2 g06300574
The DEF injectors are on the inlet of the Clean Emissions Module (CEM). There are injectors on both inlets of the dual CEM applications.
(5) Aftertreatment #1 DEF pump #2 DEF injector #4 (green)
(6) Aftertreatment #1 DEF pump #1 DEF injector #3 (blue)
(7) Aftertreatment #2 DEF pump #2 DEF injector #4 (red)
(8) Aftertreatment #2 DEF pump #1 DEF injector #3 (yellow)Test Preparation
Remove the appropriate DEF injector from the outlet of the CEM.Note: Leave the coolant lines, DEF line, and the electrical connector connected to the DEF injector.
Illustration 3 g03370846
DEF injector bolted to measuring container lid.
Illustration 4 g03370910
441-0451 Tool Gp assembled for the test procedure
Assemble the DEF collection container from the 441-0451 Tool Gp. Three bolts and wing nuts will connect the appropriate DEF injector to the lid for the collection container.Note: In the 441-0451 Tool Gp there are extensions for the DEF line and the electrical connection if needed.Test Procedure
Turn the key switch to the ON position.
Connect to Cat® Electronic Technician (ET).
Click "Diagnostics" in the main menu, then click "Diagnostic Tests".
Proceed by selecting the appropriate "Aftertreatment X DEF Dosing Injector #X Accuracy Test".
Illustration 5 g06182034
Click "Start" to proceed with the test.Note: With the DEF injector dosing, inspect the spray pattern. The injector spray pattern should be finely atomized and conical.
Illustration 6 g03370954
After the test has completed, dispose of the collected DEF as per local regulations.
Repeat the test procedure and document the quantity of DEF collected.
Perform the test procedure on any other affected injectors and document the quantity of DEF collected.Note: Be sure to apply DEF, distilled, or deionized water on the O-rings for the DEF line connectors as lubricant.
Reinstall the DEF injector assembly using a new seal and a new gasket assembly.Note: The seal and the gasket assembly are one time use only parts.
Apply LOCTITE C-5A Copper Antiseize to the threads of bolts that secure the DEF injector.
Tighten the bolts to a torque of 5.0