C15 and C18 Tier 4 Final Engines Exhaust Cooler (NRS)

Exhaust Cooler (NRS) - Clean

C15 and C18 Tier 4 Final Engines [UENR3351]

AIR INLET AND EXHAUST SYSTEM

EXHAUST GP

C15 and C18 Tier 4 Final Engines Exhaust Cooler (NRS) - Clean

1.1. References

2.1. Introduction

3.1. Required Tools

4.1. Cleaning Preparation

5.1. Cleaning Procedure

References

Reference: Disassembly and Assembly, "Exhaust Cooler (NRS) - Remove and Install".

The following procedure is used to clean the NRS cooler in the event of a large accumulation of soot from the exhaust gas.

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Table 1
Item	Qty	Part Number	Part Name
T1	1	9U-7191	Plastic Cap
T2	⁽¹⁾	269-8297	Cleaner
T3	1	N/A	Hose Clamp

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⁽¹⁾	The NRS cooler capacities are listed in Table 2.

Block the NRS cooler at one end. Use Tooling T1 and Tooling T3 of the correct size.
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Illustration 1 g02150024
Fill the NRS cooler with Tooling T2 until the cooler is filled. Refer to Table 2 for the capacities of the NRS coolers.
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Table 2
Capacity per NRS Cooler

C9 1.5 L (1.6 qt)

C13, C27, and C32 1.75 L (1.8 qt)

C15, C18, and 3512 2.6 L (2.7 qt)
Allow the filled cooler to sit for 30 minutes.

Drain Tooling T2 from the cooler.
Remove Tooling T1 and Tooling T3.
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Illustration 2 g02150027
Steam the cooler from the inlet of the cooler. Soot and steam will flow from the outlet end of the cooler.
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Illustration 3 g02150029
Steam the cooler from the outlet end of the cooler. Soot and steam will flow from the inlet of the cooler.
Repeat Step 3 and Step 4 until the water that is exiting the ends of the cooler is clear.
Dry the NRS cooler by blowing compressed air through each end of the cooler.
Reinstall the cooler with the procedure in the Disassembly and Assembly manual.