C9.3 Engines for Caterpillar Built Machines Caterpillar

Manifold (DEF Heater) - Remove and Install

Usage:

D6T 2B3

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	-	Distilled Water	-
		De-ionized Water
		Diesel Exhaust Fluid (DEF)

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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.

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Illustration 1	g03375189

Note: Refer to Special Instruction, REHS8231, "Removal Procedures for Diesel Exhaust Fluid (DEF) Connectors" for the correct removal procedure of hose assemblies (4).

Clamp off hoses (3).
Remove clips (1) and (5). Disconnect harness assemblies (2).
Remove hose assemblies (4) and hoses (3).
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Illustration 2 g03375204
Remove cable straps (6) and disconnect harness assembly (7).
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Illustration 3 g03375207
Remove bolts (8), plate (9), manifold (10) , and the gasket (not shown).
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Illustration 4 g03382988

Arrow indicates the direction to remove filter assembly (11).

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Illustration 5 g03375411

Note: To remove filter assembly (11) from manifold assembly (10) pull outward on tabs (12).
Remove filter assembly (11) from manifold assembly (10).

Installation Procedure

Install manifold (10) in reverse order of removal.
1. Tighten bolts (8) in an alternating sequence to a torque of 5 ± 1 N·m (44 ± 9 lb in). Tighten bolts (8) a second time in an alternating sequence to a torque of 5 ± 1 N·m (44 ± 9 lb in).
2. Apply Tooling (A) to the O-ring seal inside hose assemblies (5).