C280-08 Marine Engine Catalyst (SCR)

Catalyst (SCR) - Replace

C280-08 Marine Engine [SEBU9118]

C280-08 Marine Engine Emergency Stopping

C280-08 Marine Engine Exhaust Inlet Nitrogen Oxide Sensor - Replace

AIR INLET AND EXHAUST SYSTEM

AFTERTREATMENT GP

C280-08 Marine Engine Catalyst (SCR) - Replace

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Illustration 1	g03499577
Reactor Housing Cutaway View

Note: When conducting service on the Clean Emissions Module (CEM) follow all applicable industry standards. Also, follow all applicable governmental, environmental, and safety guidelines, practices, regulations, and mandates for confined spaces.

Refer to the Disassembly and Assembly Manual for information on catalyst replacement.

In order to maximize catalyst life, AVSpare recommends that the catalysts are replaced based on either engine load factors and service hours or DEF consumption. Refer to table 1 for catalyst replacement based on load factor and service hours. Refer to table 2 for catalyst replacement based on DEF consumption.

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Table 1
SCR Replacement Intervals Based on Average Load Factor and Hours
Average Application Load Factor (%)	10	25	50	75	100
SCR Replacement Interval (hrs)	30,000	28,000	24,000	22,000	20,000

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Table 2
Approximate DEF Consumption Before SCR Replacement
Engine Model	DEF Consumption
C280-8	800,000 L (211,360 US gal)
C280-12	1,250,000 L (330,250 US gal)