C280-08 Tier 4 Engine Caterpillar

Manifold (Diesel Exhaust Fluid) - Remove and Install

Usage:

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	207-1601	Rubber Lubricant	-
B	-	Loctite 536 Low Break-loose PST Pipe Sealant	-

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NOTICE

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, NENG2500, "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.

Turn off the diesel exhaust fluid supply to the dosing cabinet.
Turn off the power supply to the dosing cabinet.
Wait 30 seconds, then turn off the air supply to the dosing cabinet.
Disconnect the diesel exhaust fluid supply from the diesel exhaust fluid screen.
Disconnect the diesel exhaust fluid injection line.
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Remove front panel (1) and panel (2).
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Disconnect harness assemblies (3) and (4).
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Disconnect harness assemblies (5) and (6).
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Disconnect tube assemblies (7) and (8).
Remove bolts (9) and remove diesel exhaust fluid manifold (10).
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Remove diesel exhaust fluid screen (11).
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Remove solenoid (12). Remove O-ring seals (13).
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Remove adapter (14). Remove O-ring seal (15).
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Remove plug (16). Remove O-ring seal (17).
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Remove solenoid (18). Remove O-ring seals (19).
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Remove sensor (20). Remove O-ring seal (21).
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Remove adapter (22). Remove O-ring seal (23).
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Remove plug (24). Remove O-ring seal (25).
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Remove adapter (26). Remove O-ring seal (27).
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Remove sensor (28). Remove O-ring seal (29).

Installation Procedure

Install diesel exhaust fluid manifold (10) in the reverse order of removal.
1. Use Tooling (A) to lubricate the O-ring seals.
2. Tighten sensor (28) to a torque of 48 ± 5 N·m (35 ± 4 lb ft).
3. Tighten sensor (20) to a torque of 20 ± 3 N·m (177 ± 27 lb in).
4. Tighten solenoid (18) to a torque of 60 ± 5 N·m (44 ± 4 lb ft).
5. Tighten solenoid (12) to a torque of 60 ± 5 N·m (44 ± 4 lb ft).
6. Apply Tooling (B) to the threads of diesel exhaust fluid screen (11) and install diesel exhaust fluid screen (11) with the arrow pointing towards the dosing cabinet.