SPOOL ASSEM. 7S4609 - Caterpillar

References
Note: A CWS login is required to access Caterpillar Channel1. Scan the QR code below with a QR enabled device or copy the link that follows.Reference: For more information, refer to "C9.3 Tier 4 Final Engine DEF Dosing Control System" on Caterpillar Channel1.
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Required Tooling
Table 1
Required Tooling
441-0451 Kit - Test
LOCTITE C-5A Copper Antiseize Test Procedure
Remove the Diesel Exhaust Fluid (DEF) injector from the outlet of the Diesel Particulate Filter (DPF).Note: Leave the coolant lines, DEF line, and the electrical connector connected to the DEF injector.
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DEF injector bolted to measuring container lid
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441-0451 Kit -Test assembled for the test procedure
Assemble the DEF collection container from the 441-0451 Kit - Test. Three bolts and wing nuts will connect the DEF injector to the lid for the collection container.Note: In the 441-0451 Kit - Test there are extensions for the DEF line and the electrical connection if needed.
Turn the key switch to the ON position.
Connect to Caterpillar® Electronic Technician (Cat ® ET).
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Click "Diagnostics" in the main menu, then click "Diagnostic Tests".
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Proceed by clicking "DEF Dosing System Accuracy Test".
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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.
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After the test has completed, dispose of the collected DEF as per local regulations.
Repeat the test procedure and document the quantity of DEF collectedSpecification for DEF collected during the dosing test ... 100 mL to 130 mLNote: 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 0.5 N m (44 4 lb in).
Retighten the bolts to a torque of 5.0 0.5 N m (44 4 lb in). Turn an additional 90° 5°.