8D8628 WASHER Caterpillar parts
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 135H, 135H NA
Rating:
Alternative (cross code) number:
CA8D8628
8D-8628
8D8628
CA8D8628
8D-8628
8D8628
Weight: 0.50 pounds 0 kg.
Information:
ID
49.3
mm
MATERIAL
Steel - Carbon
MATL THK
6.35
mm
OD
91.29
mm
MOTOR GRADER,
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Compatible equipment models: 8D8628:
Information:
Note: This section contains some general information about the engine electronic system and sensors. For more information, refer to Systems Operation/Testing and Adjusting.Electronic System
The Caterpillar Electronic System is a complete electronic control system for gas engines. The following benefits are the most significant advantages of the electronic system:
Air/Fuel ratio control
Extensive system diagnostics
Precise control of engine operation
Protection from detonation
Timing control of individual cylinders
Illustration 1 g00882978
Junction box
Most of the functions of the electronic system are provided by the Engine Control Module (ECM). The ECM is a sealed unit that is located inside a junction box at the rear of the engine.Five primary functions are supported by the ECM:
Governing of the engine rpm
Control of ignition
Control of the air/fuel ratio
Start/stop control
Monitoring and protection of the engineGoverning of the Engine RPM
The ECM receives a signal from the speed/timing sensor. The ECM maintains the desired engine rpm through electrical control of the engine's throttle.Control of Ignition
Each cylinder has an ignition transformer that is located on top of the valve cover. In order to initiate combustion in each cylinder, the ECM sends a pulse to the primary coil of the ignition transformer at the correct time. The time is based on firing order and engine speed. The transformer increases the voltage which creates a spark across the spark plug electrode.The transformers are grounded through the valve cover. Use caution when a valve cover is removed.Always disconnect the ignition harness from the transformer when a valve cover is removed.An ignition harness connects each transformer to the ECM.Control of Air/Fuel Ratio
The ECM determines the desired volumetric flow rate for fuel. The determination is based on the components: actual engine speed, actual load, MAP, MAT and internal maps. Next, the ECM sends information on the desired fuel flow to the fuel metering valve via the CAN data link. The ECM adjusts the signal to the fuel metering valve in order to maintain emissions. The process is repeated continuously during engine operation.Start/Stop Control
The ECM contains the logic and the inputs for controlling the starting and stopping of the engine. The logic for starting and stopping can be programmed by the customer. The ECM supplies positive "+" battery voltage to the starting motor relay and the gas shutoff valve.The engine uses an energize-to-run system. The gas shutoff valve must remain energized in order to supply fuel to the engine. If power is removed from the gas shutoff valve, the fuel is shut off. The gas shutoff valve may be controlled by the customer.Monitoring Engine Operation
Sensors are used in order to monitor engine operation. Wiring harnesses connect the sensors to the ECM. The ECM uses the information from the sensors in order to monitor the engine. The ECM also uses the information from the sensors in order to control the engine. The information is also used to generate event codes, and diagnostic codes. The codes can be read with a Caterpillar Electronic Technician (ET).Event - An event is a result of abnormal engine operation. If abnormal engine operation is detected, the ECM
The Caterpillar Electronic System is a complete electronic control system for gas engines. The following benefits are the most significant advantages of the electronic system:
Air/Fuel ratio control
Extensive system diagnostics
Precise control of engine operation
Protection from detonation
Timing control of individual cylinders
Illustration 1 g00882978
Junction box
Most of the functions of the electronic system are provided by the Engine Control Module (ECM). The ECM is a sealed unit that is located inside a junction box at the rear of the engine.Five primary functions are supported by the ECM:
Governing of the engine rpm
Control of ignition
Control of the air/fuel ratio
Start/stop control
Monitoring and protection of the engineGoverning of the Engine RPM
The ECM receives a signal from the speed/timing sensor. The ECM maintains the desired engine rpm through electrical control of the engine's throttle.Control of Ignition
Each cylinder has an ignition transformer that is located on top of the valve cover. In order to initiate combustion in each cylinder, the ECM sends a pulse to the primary coil of the ignition transformer at the correct time. The time is based on firing order and engine speed. The transformer increases the voltage which creates a spark across the spark plug electrode.The transformers are grounded through the valve cover. Use caution when a valve cover is removed.Always disconnect the ignition harness from the transformer when a valve cover is removed.An ignition harness connects each transformer to the ECM.Control of Air/Fuel Ratio
The ECM determines the desired volumetric flow rate for fuel. The determination is based on the components: actual engine speed, actual load, MAP, MAT and internal maps. Next, the ECM sends information on the desired fuel flow to the fuel metering valve via the CAN data link. The ECM adjusts the signal to the fuel metering valve in order to maintain emissions. The process is repeated continuously during engine operation.Start/Stop Control
The ECM contains the logic and the inputs for controlling the starting and stopping of the engine. The logic for starting and stopping can be programmed by the customer. The ECM supplies positive "+" battery voltage to the starting motor relay and the gas shutoff valve.The engine uses an energize-to-run system. The gas shutoff valve must remain energized in order to supply fuel to the engine. If power is removed from the gas shutoff valve, the fuel is shut off. The gas shutoff valve may be controlled by the customer.Monitoring Engine Operation
Sensors are used in order to monitor engine operation. Wiring harnesses connect the sensors to the ECM. The ECM uses the information from the sensors in order to monitor the engine. The ECM also uses the information from the sensors in order to control the engine. The information is also used to generate event codes, and diagnostic codes. The codes can be read with a Caterpillar Electronic Technician (ET).Event - An event is a result of abnormal engine operation. If abnormal engine operation is detected, the ECM
Caterpillar parts catalog:
Parts washer Caterpillar catalog:
2G8626
WASHER-THRUST
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 14...
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 14...
8D7425
WASHER-THRUST
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 14...
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 14...
8D7423
WASHER-SPECIAL
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 14...
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 14...
8W4557
WASHER
120G, 12G, 130G, 140G, 14G, 160G, 16G
120G, 12G, 130G, 140G, 14G, 160G, 16G
9D1522
WASHER-THRUST
120G
120G
9D1523
WASHER-THRUST
120G
120G
7D8876
WASHER-THRUST
120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 140M 3, ...
120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 140M 3, ...
7D8877
WASHER-THRUST
120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 140M 3, ...
120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 140M 3, ...
7D8878
WASHER-THRUST
120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 140M 3, ...
120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 140M 3, ...
5D5206
WASHER-NOTCHED
120, 120B, 120G, 120H, 120K, 120K 2, 12E, 12F, 12G, 12H, 130G, 135H, 140, 140B, 140G, 140H, 140K, 14E, 160G, 160H, 160K
120, 120B, 120G, 120H, 120K, 120K 2, 12E, 12F, 12G, 12H, 130G, 135H, 140, 140B, 140G, 140H, 140K, 14E, 160G, 160H, 160K
8D5467
WASHER-NOTCHED
120G, 120H, 120K, 120K 2, 12G, 12H, 130G, 135H, 140G, 140H, 140K, 160G, 160H, 160K
120G, 120H, 120K, 120K 2, 12G, 12H, 130G, 135H, 140G, 140H, 140K, 160G, 160H, 160K
0M0393
WASHER-NOTCHED
120, 120G, 130G
120, 120G, 130G
8D3957
WASHER-THRUST
120G, 12G, 130G, 140G, 160G
120G, 12G, 130G, 140G, 160G
8D9756
WASHER-THRUST
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 135H, 135H NA
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 135H, 135H NA
8D9754
WASHER-THRUST
120G
120G
7D8347
WASHER-TAB
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 12G, 12H, 12H ES, 12H NA, 12K, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 143H, 160G, 160H, 160H ES, 160H NA, 160K, 163H, 163H NA
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 12G, 12H, 12H ES, 12H NA, 12K, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 143H, 160G, 160H, 160H ES, 160H NA, 160K, 163H, 163H NA
0T0432
WASHER
D7G
D7G
2G8615
WASHER-THRUST
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 14...
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 120M, 120M 2, 12G, 12H, 12H ES, 12H NA, 12K, 12M, 12M 2, 12M 3, 12M 3 AWD, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 140M, 140M 2, 14...
2G8665
WASHER-THRUST
120G
120G
2G8664
WASHER-THRUST
120G
120G
2P9186
WASHER
120G, 12G, 130G, 140G, 14G, 14H, 14H NA, 160G, 16G, 16H, 16H NA
120G, 12G, 130G, 140G, 14G, 14H, 14H NA, 160G, 16G, 16H, 16H NA
8X8376
WASHER
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 135H, 135H NA
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 135H, 135H NA
6G3205
WASHER-THRUST
120G
120G