1484751 SPACER Caterpillar parts
315C, 315D L, 318B, 318D L
Rating:
Alternative (cross code) number:
CA1484751
148-4751
1484751
CA1484751
148-4751
1484751
Weight: 0.57 pounds 0 kg.
EXCAVATOR,
Number on catalog scheme:
38
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Information:
System Operation
This engine is electronically controlled. Each cylinder has an electronic unit injector. The Electronic Control Module (ECM) sends a signal to each injector solenoid in order to control the operation of the fuel injection system.Electronic Controls
The electronic system consists of the following components: the ECM, the Mechanically Actuated Electronically Controlled Unit Injectors (MEUI), the wiring harness, the switches and the sensors. The ECM is the computer. The flash file is the software for the computer. The flash file contains the operating maps. The operating maps define the following characteristics of the engine:
Horsepower
Torque curvesThe ECM determines the timing and the amount of fuel that is delivered to the cylinders. These decisions are based on the actual conditions and/or on the desired conditions at any given time.The ECM compares the desired engine speed to the actual engine speed. The actual engine speed is determined through a signal from the engine speed/timing sensor. The desired engine speed is determined with the following factors:
Throttle signal
Other input signals from sensors
Certain diagnostic codesIf the desired engine speed is greater than the actual engine speed, the ECM injects more fuel in order to increase the actual engine speed.Cold Mode
The ECM limits engine power during cold mode operation and the ECM modifies injection timing during cold mode operation. Cold mode operation provides the following benefits:
Increased cold weather starting capability
Reduced warm-up time
Reduced white smokeCold mode is activated whenever the engine temperature falls below a predetermined value. Cold mode remains active until the engine temperature rises above a predetermined value or until a time limit is exceeded.Fuel Injection
The ECM controls the amount of fuel that is injected by varying the signals to the injectors. The injector will pump fuel only if the injector solenoid is energized. The ECM sends a high voltage signal to the solenoid. This high voltage signal energizes the solenoid. By controlling the timing and the duration of the high voltage signal, the ECM can control injection timing and the engine RPM.The flash file inside the ECM sets certain limits on the amount of fuel that can be injected. The "FRC Fuel Limit" is used to control the air/fuel ratio for control of emissions. The "FRC Fuel Limit" is a limit that is based on the turbocharger outlet pressure. A higher turbocharger outlet pressure indicates that there is more air in the cylinder. When the ECM senses a higher turbocharger outlet pressure, the ECM increases the "FRC Fuel Limit". When the ECM increases the "FRC Fuel Limit", the ECM allows more fuel into the cylinder. The "FRC Fuel Limit" is programmed into the ECM at the factory. The "FRC Fuel Limit" cannot be changed.The "Rated Fuel Limit" is a limit that is based on the power rating of the engine and on engine rpm. The "Rated Fuel Limit" is similar to the rack stops and to the torque spring on a mechanically governed engine. The "Rated Fuel Limit" provides the power curves and the torque curves for a specific engine family and for a
This engine is electronically controlled. Each cylinder has an electronic unit injector. The Electronic Control Module (ECM) sends a signal to each injector solenoid in order to control the operation of the fuel injection system.Electronic Controls
The electronic system consists of the following components: the ECM, the Mechanically Actuated Electronically Controlled Unit Injectors (MEUI), the wiring harness, the switches and the sensors. The ECM is the computer. The flash file is the software for the computer. The flash file contains the operating maps. The operating maps define the following characteristics of the engine:
Horsepower
Torque curvesThe ECM determines the timing and the amount of fuel that is delivered to the cylinders. These decisions are based on the actual conditions and/or on the desired conditions at any given time.The ECM compares the desired engine speed to the actual engine speed. The actual engine speed is determined through a signal from the engine speed/timing sensor. The desired engine speed is determined with the following factors:
Throttle signal
Other input signals from sensors
Certain diagnostic codesIf the desired engine speed is greater than the actual engine speed, the ECM injects more fuel in order to increase the actual engine speed.Cold Mode
The ECM limits engine power during cold mode operation and the ECM modifies injection timing during cold mode operation. Cold mode operation provides the following benefits:
Increased cold weather starting capability
Reduced warm-up time
Reduced white smokeCold mode is activated whenever the engine temperature falls below a predetermined value. Cold mode remains active until the engine temperature rises above a predetermined value or until a time limit is exceeded.Fuel Injection
The ECM controls the amount of fuel that is injected by varying the signals to the injectors. The injector will pump fuel only if the injector solenoid is energized. The ECM sends a high voltage signal to the solenoid. This high voltage signal energizes the solenoid. By controlling the timing and the duration of the high voltage signal, the ECM can control injection timing and the engine RPM.The flash file inside the ECM sets certain limits on the amount of fuel that can be injected. The "FRC Fuel Limit" is used to control the air/fuel ratio for control of emissions. The "FRC Fuel Limit" is a limit that is based on the turbocharger outlet pressure. A higher turbocharger outlet pressure indicates that there is more air in the cylinder. When the ECM senses a higher turbocharger outlet pressure, the ECM increases the "FRC Fuel Limit". When the ECM increases the "FRC Fuel Limit", the ECM allows more fuel into the cylinder. The "FRC Fuel Limit" is programmed into the ECM at the factory. The "FRC Fuel Limit" cannot be changed.The "Rated Fuel Limit" is a limit that is based on the power rating of the engine and on engine rpm. The "Rated Fuel Limit" is similar to the rack stops and to the torque spring on a mechanically governed engine. The "Rated Fuel Limit" provides the power curves and the torque curves for a specific engine family and for a
Caterpillar parts catalog:
Parts spacer Caterpillar catalog:
1090, 1190, 1190T, 1290T, 1390, 2290, 2390, 2391, 2491, 2590, 315C, 315D L, 318B, 318C, 318E L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320...
315C, 315D L, 318B, 318C, 318E L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 3...
305.5, 305.5E, 306, 307C, 307D, 307E, 308E, 308E CR, 308E SR, 308E2 CR, 312E, 312E L, 315B, 316E L, 317B LN, 318B, 318C, 318E L, 319C, 320B, 320B FM LL, 320B U, 320C, 320C FM, 320C L, 320D, 320D FM, 3...
311C, 313D2 LGP, 315C, 315D L, 316E L, 318B, 318C, 318D L, 318D2 L, 318E L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320B FM LL, 320B L, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320...
311, 311B, 311C, 311D LRR, 312B, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318C, 318D L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320C FM, 320C L, 320D, 320D FM, 320D F...
311, 311B, 311C, 311D LRR, 312, 312B, 312C, 312C L, 312D, 312D L, 313D, 314C, 314D CR, 314D LCR, 315D L, 318C, 318D L, 319C, 319D, 319D L, 319D LN, 320, 320 L, 320B, 320B L, 320C, 320C FM, 320C L, 320...
311C, 311D LRR, 311F LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 313D2 LGP, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR, 315C, 315D L, 316E L, 318D L, 318D2 L,...
315C, 315D L, 318C, 319C, 319D, 319D LN, 320 L, 320B, 320B FM LL, 320B L, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E,...
312C, 312D, 312E, 312E L, 314E CR, 314E LCR, 315C, 315D L, 316E L, 318C, 318E L, 319C, 319D, 320C, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 322C, 323D L, 323D LN, 323E L, 324D, 324D L, 324D LN, 324E,...
315D L, 318E L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 321D LCR, 323D L, 323D LN, 323D2 ...
315C, 315D L, D3C III, D3G, D3K XL, D3K2 LGP, D4C III, D4G, D4K XL, D4K2 XL, D5C, D5C III, D5G, D5K LGP, D5K2 XL
315C, 315D L, D3C III, D3G, D3K XL, D3K2 LGP, D4C, D4C II, D4C III, D4G, D4K XL, D4K2 XL, D5C, D5C III, D5G, D5K LGP, D5K2 XL
315C, 315D L, 318B, 318D L
1484754
SPACER
315C, 315D L, 318B, 318D L
315C, 315D L, 318B, 318D L
1484755
SPACER
315C, 315D L, 318B, 318D L
315C, 315D L, 318B, 318D L
1484756
SPACER
315C, 315D L, 318B, 318D L
315C, 315D L, 318B, 318D L
1484757
SPACER
315C, 315D L, 318B, 318D L
315C, 315D L, 318B, 318D L
1484758
SPACER
315C, 315D L, 318B, 318D L
315C, 315D L, 318B, 318D L
311C, 313D2 LGP, 315C, 315D L, 316E L, 318B, 318C, 318D L, 318D2 L, 318E L, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320B FM LL, 320B L, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320...
1568131
SPACER
317B LN, 318B
317B LN, 318B
1623858
SPACER
317B LN, 318B, 793D, 797F, 824H, 826H, 834G, 834H, 836G, 836H, 844, 988G, 988H, 990 II, 990H, 993K, CW-34
317B LN, 318B, 793D, 797F, 824H, 826H, 834G, 834H, 836G, 836H, 844, 988G, 988H, 990 II, 990H, 993K, CW-34
8X7933
SPACER
318B, 318C, 319C, 319D, 319D LN, 320 L, 320B, 320C, 322 LN, 322B LN, 322C, 323D L, 323D LN, 324D, 324D LN, 325 L, 325 LN, 325B L, 325C, 325D, 325D L, 328D LCR, 330 L, 330B L, 330C, 330C L, 330D L, 330...
318B, 318C, 319C, 319D, 319D LN, 320 L, 320B, 320C, 322 LN, 322B LN, 322C, 323D L, 323D LN, 324D, 324D LN, 325 L, 325 LN, 325B L, 325C, 325D, 325D L, 328D LCR, 330 L, 330B L, 330C, 330C L, 330D L, 330...
318B
1557864
SPACER
318B, 986H
318B, 986H