7D6531 SPACER Caterpillar parts
120, 120B, 12F, 140B, 14E
Rating:
Alternative (cross code) number:
CA7D6531
7D-6531
7D6531
CA7D6531
7D-6531
7D6531
Weight: 0.100 pounds 0 kg.
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CTP 7D6531 Spacer for Heavy Equipment
CTP Spacer Only || Sold in each || Easy in-and-out fit
CTP Spacer Only || Sold in each || Easy in-and-out fit
CTP 7D6531 Spacer for Heavy Equipment
CTP Spacer Only || Sold in each || Easy in-and-out fit
CTP Spacer Only || Sold in each || Easy in-and-out fit
$26.30
07 Apr 2024
Amazon.com
CTP 7D6531 Spacer for Heavy Equipment
CTP Spacer Only || Sold in each || Easy in-and-out fit
CTP Spacer Only || Sold in each || Easy in-and-out fit
Number on catalog scheme:
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To meet current emissions legislation requirements, a small amount of certain chemical compounds that are emitted by the engine must not be allowed to enter the atmosphere.
Illustration 1 g03397586
Typical example
(1) Selective Catalytic Reduction (SCR) system
(2) Exhaust outlet connection
(3) Diesel Exhaust Fluid (DEF) injector
(4) Diesel Particulate Filter (DPF)
(5) Diesel Oxidation Catalyst (DOC)
(6) Exhaust intake connection The Clean Emissions Module (CEM) for the engine consists of the following components.
Diesel Oxidation Catalyst (DOC)
Diesel Particulate Filter (DPF)
Selective Catalytic Reduction (SCR) systemThe Diesel Oxidation Catalyst (DOC) oxidizes the carbon monoxide and the hydrocarbons that are not burnt in the exhaust gas into carbon dioxide and water. The DOC also acts on the oxides of nitrogen to increase the nitrogen dioxide fraction for improved efficiency of the SCR system. The DOC is a through flow device that will continue to operate during all normal engine operating conditions.The wall flow Diesel Particulate Filter (DPF) collects all solid particulate matter in the exhaust gas.A flexible exhaust pipe connects the engine to the Clean Emissions Module (CEM). Refer to Disassembly and Assembly for the correct procedure to install the flexible exhaust pipe.The solid particulate matter that is collected by the DPF consists of soot (carbon) from incomplete combustion of the fuel and inorganic ash from the combustion of any oil in the cylinder.The rate of accumulation of ash is slow under normal engine operating conditions. The filter is designed to contain all the ash that is produced for the useful emissions life of the engine.The engine aftertreatment system is designed to oxidize the soot in the DPF at the same rate as the soot is produced by the engine. The oxidization of the soot will occur when the engine is operating under normal conditions. The soot in the DPF is constantly monitored. If the engine is operated in a way that produces more soot than the oxidized soot, the engine management system will automatically activate the exhaust back pressure valve to raise the exhaust temperature. The raising of the exhaust temperature will ensure that more soot is oxidized than the soot that is produced by the engine. The oxidization of more soot returns the DPF to a reduced level of soot. The exhaust back pressure valve is then deactivated when the soot level has been reduced.The engine ECM must know how much soot is in the DPF. Measurement of soot is accomplished through the following means:
Radio frequency measurement across the DPFThe information gathered from the radio frequency measurement is then converted into a percentage of soot output that is viewed through the electronic service tool. The soot level may be displayed as a graphical bar, or as an actual percentage.The Electronic Control Module (ECM) uses the soot measurement information to determine if the engine operating conditions need to be adjusted in order to oxidize the soot at an increased rate.After the DPF, the exhaust gases are injected with a Diesel Exhaust Fluid (DEF) by a Diesel Exhaust Fluid (DEF) injector. The exhaust gases and the DEF are mixed
Illustration 1 g03397586
Typical example
(1) Selective Catalytic Reduction (SCR) system
(2) Exhaust outlet connection
(3) Diesel Exhaust Fluid (DEF) injector
(4) Diesel Particulate Filter (DPF)
(5) Diesel Oxidation Catalyst (DOC)
(6) Exhaust intake connection The Clean Emissions Module (CEM) for the engine consists of the following components.
Diesel Oxidation Catalyst (DOC)
Diesel Particulate Filter (DPF)
Selective Catalytic Reduction (SCR) systemThe Diesel Oxidation Catalyst (DOC) oxidizes the carbon monoxide and the hydrocarbons that are not burnt in the exhaust gas into carbon dioxide and water. The DOC also acts on the oxides of nitrogen to increase the nitrogen dioxide fraction for improved efficiency of the SCR system. The DOC is a through flow device that will continue to operate during all normal engine operating conditions.The wall flow Diesel Particulate Filter (DPF) collects all solid particulate matter in the exhaust gas.A flexible exhaust pipe connects the engine to the Clean Emissions Module (CEM). Refer to Disassembly and Assembly for the correct procedure to install the flexible exhaust pipe.The solid particulate matter that is collected by the DPF consists of soot (carbon) from incomplete combustion of the fuel and inorganic ash from the combustion of any oil in the cylinder.The rate of accumulation of ash is slow under normal engine operating conditions. The filter is designed to contain all the ash that is produced for the useful emissions life of the engine.The engine aftertreatment system is designed to oxidize the soot in the DPF at the same rate as the soot is produced by the engine. The oxidization of the soot will occur when the engine is operating under normal conditions. The soot in the DPF is constantly monitored. If the engine is operated in a way that produces more soot than the oxidized soot, the engine management system will automatically activate the exhaust back pressure valve to raise the exhaust temperature. The raising of the exhaust temperature will ensure that more soot is oxidized than the soot that is produced by the engine. The oxidization of more soot returns the DPF to a reduced level of soot. The exhaust back pressure valve is then deactivated when the soot level has been reduced.The engine ECM must know how much soot is in the DPF. Measurement of soot is accomplished through the following means:
Radio frequency measurement across the DPFThe information gathered from the radio frequency measurement is then converted into a percentage of soot output that is viewed through the electronic service tool. The soot level may be displayed as a graphical bar, or as an actual percentage.The Electronic Control Module (ECM) uses the soot measurement information to determine if the engine operating conditions need to be adjusted in order to oxidize the soot at an increased rate.After the DPF, the exhaust gases are injected with a Diesel Exhaust Fluid (DEF) by a Diesel Exhaust Fluid (DEF) injector. The exhaust gases and the DEF are mixed
Caterpillar parts catalog:
Parts spacer Caterpillar catalog:
120B, 12E, 12F, 140, 140B, 14E
120B, 12E, 12F, 140, 140B, 14E
120B, 12E, 12F, 140, 140B, 14E
120B, 12F, 140, 140B, 14E
120B, 12E, 12F, 140, 140B, 14E
120B, 12E, 12F, 140, 140B, 14E
120B, 12E, 12F, 140, 140B, 14E
120B, 12E, 12F, 140, 140B, 14E
120, 120B, 12E, 140
120, 120B, 12E, 140
120, 120B, 12E, 140
120B, 12F, 140B, 14E
6J6606
SPACER
14E
14E
6D2171
SPACER
12F, 12G, 14E, 14G, 16, 16G
12F, 12G, 14E, 14G, 16, 16G
6D3859
SPACER
12F, 12G, 14E, 14G, 16, 16G
12F, 12G, 14E, 14G, 16, 16G
120B, 12F, 140B, 14E
9D5368
SPACER
12G, 16G
12G, 16G
8J6714
SPACER
120G, 12G, 130G, 16G
120G, 12G, 130G, 16G
8J6708
SPACER
120G, 12G, 130G, 16G
120G, 12G, 130G, 16G
7D9374
SPACER
14E
14E
8D4876
SPACER (4.94 in. long)
120, 140
120, 140