8D3786 MOUNTING Caterpillar parts
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, 14G, 14H NA, 160G, 160H, 160H ES, 160H NA, 160K, 163H ...
Rating:
Alternative (cross code) number:
CA8D3786
8D-3786
8D3786
CA8D3786
8D-3786
8D3786
Weight: 0.09 pounds 0 kg.
GENERATOR SET, WHEEL TRACTOR,
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2024-07-09
2024-03-13
2022-10-25
2019-09-03
2018-01-01
Compatible equipment models: 8D3786:
GENERATOR SET
C13 XQ350
MOTOR GRADER
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
14G
14H NA
160G
160H
160H ES
160H NA
160K
163H NA
16G
16H NA
24H
PETROLEUM PACKAGE
CX31-C13I
CX31-C15I
CX31-C18I
CX35-C18I
CX35-P800
TH35-C11I
TH35-C13I
TH35-C13T
TH35-C15I
TH35-C15T
PETROLEUM TRANSMISSION
TH35-E81
PIPELAYER
561D
TRACK-TYPE TRACTOR
D10N
D10R
D10T
D10T2
D11R
D3C III
D4C III
D4E
D4E SR
D5B
D5C III
D5E
D6D
D6D SR
D6E
D6E SR
D8K
TRUCK
769C
769D
770
770G
770G OEM
772
772G
772G OEM
773B
773D
773E
773F
773G
773G LRC
773G OEM
775F
775G
775G LRC
775G OEM
777C
777D
777F
777G
793D
793F
793F CMD
793F OEM
793F XQ
797
797B
797F
TRUCK ENGINE
C13
UNDERGROUND ART TRUCK
AD60
Information:
3406B (8TC3565-Up, 5YG, 2EK) PEEC;
3406B (4CK1-845) PEEC III;
3406C (4CK846-Up) PEEC III Truck EnginesThis information is applicable to 3406B (8TC3565-Up, 5YG1 -Up, 2EK1 -Up) PEEC, and 3406B (4CK1 -845) PEEC III, 3406C (4CK846-Up) PEEC III Truck Engines and, 3406B (8TC) PEEC Truck Engines that have had a Personality Module with serial number 20,000 or greater installed.
Symptoms
Electrical noise (voltage spikes) in the truck electrical system has been found to cause malfunctions in the 3406B PEEC Truck Engines equipped with permanent fault logging. Typical sources of the electrical noise are relays or solenoids (such as those controlling engine cooling fans, compression/exhaust brakes, and air conditioner compressors) switching on or off. Symptoms caused by the electrical noise are:* Engine speed "burps" or* ECM restarts or* erroneously logged fault codes
These symptoms occur ONLY on those PEEC truck engines equipped with permanent fault logging. These include 3406B Truck Engines 8TC3565-Up, 5YG1Up, 2EK1 -Up, 4CK1 -845, and 3406C 4CK846-Up, or any 8TC PEEC engine that has been retrofitted with a personality module having a serial number above 20,000. No component failures have been confirmed to be caused by this noise, only the above malfunctions.
Symptoms associated with electronic control module (ECM) restarts are similar to those associated with intermittent electrical power. Typically, the diagnostic lamp comes on for a few seconds and no faults are logged. If vehicle speed is above 30 mph, the engine resumes normal power after a second or two. If vehicle speed is less than 30 mph, PEEC goes through its cold mode checks again. During the cold mode checks, engine speed is limited to 1700 rpm, timing advance is inhibited and power is severely limited.
Any fault can be logged erroneously as a result of this electrical noise, including Fault Code 48 (Excessive Engine Power), the code used to log the occurrence of tampering.
One indication of erroneous logging is any logged occurrence of Fault Codes 00, 31, 33, 34, 35, 53, 56, or 57. None of which are intentionally logged. Another indication is numerous, unrelated faults logged at the same time on the PEEC diagnostic clock.
Solution
As the field population of trucks age, checking and cleaning of both the power and ground circuits associated with the PEEC system should be part of the troubleshooting process. This includes running wires from Pin B on the Road Speed Buffer and Throttle Position Sensor to the same ground point as the ECM.
Connecting an inexpensive diode across the coil of the relay or solenoid, as shown in Illustration 1, will prevent voltage spikes from occurring. The diode should be rated for at least 200 volts at 2 amps. An applicable 5N4988 Diode is available from Caterpillar. Freightliner part number A06-1 7895-003 is also applicable. Similar diodes are available at most electronic supply stores.
Illustration 1. Typical schematic of diode (1) installed on relay (2) and solenoid (3).
Illustration 2. Electrical (1) and physical (4) representation of a diode. Electrical current flows in the direction of the arrows.If Fault Code 48 is logged, DO NOT immediately assume that tampering has
3406B (4CK1-845) PEEC III;
3406C (4CK846-Up) PEEC III Truck EnginesThis information is applicable to 3406B (8TC3565-Up, 5YG1 -Up, 2EK1 -Up) PEEC, and 3406B (4CK1 -845) PEEC III, 3406C (4CK846-Up) PEEC III Truck Engines and, 3406B (8TC) PEEC Truck Engines that have had a Personality Module with serial number 20,000 or greater installed.
Symptoms
Electrical noise (voltage spikes) in the truck electrical system has been found to cause malfunctions in the 3406B PEEC Truck Engines equipped with permanent fault logging. Typical sources of the electrical noise are relays or solenoids (such as those controlling engine cooling fans, compression/exhaust brakes, and air conditioner compressors) switching on or off. Symptoms caused by the electrical noise are:* Engine speed "burps" or* ECM restarts or* erroneously logged fault codes
These symptoms occur ONLY on those PEEC truck engines equipped with permanent fault logging. These include 3406B Truck Engines 8TC3565-Up, 5YG1Up, 2EK1 -Up, 4CK1 -845, and 3406C 4CK846-Up, or any 8TC PEEC engine that has been retrofitted with a personality module having a serial number above 20,000. No component failures have been confirmed to be caused by this noise, only the above malfunctions.
Symptoms associated with electronic control module (ECM) restarts are similar to those associated with intermittent electrical power. Typically, the diagnostic lamp comes on for a few seconds and no faults are logged. If vehicle speed is above 30 mph, the engine resumes normal power after a second or two. If vehicle speed is less than 30 mph, PEEC goes through its cold mode checks again. During the cold mode checks, engine speed is limited to 1700 rpm, timing advance is inhibited and power is severely limited.
Any fault can be logged erroneously as a result of this electrical noise, including Fault Code 48 (Excessive Engine Power), the code used to log the occurrence of tampering.
One indication of erroneous logging is any logged occurrence of Fault Codes 00, 31, 33, 34, 35, 53, 56, or 57. None of which are intentionally logged. Another indication is numerous, unrelated faults logged at the same time on the PEEC diagnostic clock.
Solution
As the field population of trucks age, checking and cleaning of both the power and ground circuits associated with the PEEC system should be part of the troubleshooting process. This includes running wires from Pin B on the Road Speed Buffer and Throttle Position Sensor to the same ground point as the ECM.
Connecting an inexpensive diode across the coil of the relay or solenoid, as shown in Illustration 1, will prevent voltage spikes from occurring. The diode should be rated for at least 200 volts at 2 amps. An applicable 5N4988 Diode is available from Caterpillar. Freightliner part number A06-1 7895-003 is also applicable. Similar diodes are available at most electronic supply stores.
Illustration 1. Typical schematic of diode (1) installed on relay (2) and solenoid (3).
Illustration 2. Electrical (1) and physical (4) representation of a diode. Electrical current flows in the direction of the arrows.If Fault Code 48 is logged, DO NOT immediately assume that tampering has
Cat SIS web machinery list:
Parts mounting Caterpillar catalog:
9P3066
MOUNTING
304, 305, 305.5, 305.5E, 306, 306E, 561N, 572R, 572R II, 578, 583R, 587R, 587T, 589, 918F, 924F, 928F, 938F, 938G, 938G II, 973D, D10, D10N, D10R, D10T, D10T2, D5N, D5R LGP, D6G2 LGP, D6G2 XL, D6H, D6...
304, 305, 305.5, 305.5E, 306, 306E, 561N, 572R, 572R II, 578, 583R, 587R, 587T, 589, 918F, 924F, 928F, 938F, 938G, 938G II, 973D, D10, D10N, D10R, D10T, D10T2, D5N, D5R LGP, D6G2 LGP, D6G2 XL, D6H, D6...
9D7924
MOUNTING AS
120G, 120H, 120H ES, 120H NA, 12G, 12H, 12H ES, 12H NA, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 143H, 14G, 14H NA, 160G, 160H, 160H ES, 160H NA, 163H, 163H NA, 16G, 16H NA, 303.5C, 303.5D, ...
120G, 120H, 120H ES, 120H NA, 12G, 12H, 12H ES, 12H NA, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 143H, 14G, 14H NA, 160G, 160H, 160H ES, 160H NA, 163H, 163H NA, 16G, 16H NA, 303.5C, 303.5D, ...
9S5187
MOUNTING
320C, 517, 527, 933C, 939, 939C, D3C III, D4C III, D4E, D4H, D4H XL, D4HTSK II, D4HTSK III, D5B, D5C III, D5H, D5H XL, D5HTSK II, D5M, D5N, D5R LGP, D6D, D6G2 XL, D6H, D6H II, D6H XL, D6H XR, D6M, D6N...
320C, 517, 527, 933C, 939, 939C, D3C III, D4C III, D4E, D4H, D4H XL, D4HTSK II, D4HTSK III, D5B, D5C III, D5H, D5H XL, D5HTSK II, D5M, D5N, D5R LGP, D6D, D6G2 XL, D6H, D6H II, D6H XL, D6H XR, D6M, D6N...
3W2568
MOUNTING
611, 615, 615C, 824G II, 824H, 834G, 834H, 943, 953, 988F, 988F II, D6R, D6R STD, D6T, D6T LGP, D6T XL, D7R XR
611, 615, 615C, 824G II, 824H, 834G, 834H, 943, 953, 988F, 988F II, D6R, D6R STD, D6T, D6T LGP, D6T XL, D7R XR
9G0162
MOUNTING
D10N, D10R, D10T, D7H, D8L, D9L, D9N
D10N, D10R, D10T, D7H, D8L, D9L, D9N
9D5496
MOUNTING AS
621B, 623B, 627B, 641B, 651E, 657B, 657E, 657G
621B, 623B, 627B, 641B, 651E, 657B, 657E, 657G
5D5654
MOUNTING
14G, 16, 657E, 69D, 768C, 769C, 769D, 770, 771C, 771D, 772, 772B, 773, 773B, 773D, 773E, 773F, 775B, 775D, 775E, 775F, 776, 776C, 776D, 777, 777B, 777D, 777F, 777G, 784B, 784C, 785, 785B, 785C, 785D, ...
14G, 16, 657E, 69D, 768C, 769C, 769D, 770, 771C, 771D, 772, 772B, 773, 773B, 773D, 773E, 773F, 775B, 775D, 775E, 775F, 776, 776C, 776D, 777, 777B, 777D, 777F, 777G, 784B, 784C, 785, 785B, 785C, 785D, ...
9D1589
MOUNTING
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, 14G, 14H, 14H NA, 160H, 160H ES, 160H NA, 160K, 163H, ...
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, 14G, 14H, 14H NA, 160H, 160H ES, 160H NA, 160K, 163H, ...
6G5159
MOUNTING
120G, 12G, 130G, 140G, 160G
120G, 12G, 130G, 140G, 160G
2G8098
MOUNTING
120G, 12G, 130G, 140G, 14G, 160G, 16G
120G, 12G, 130G, 140G, 14G, 160G, 16G
8W6598
MOUNTING AS
14G, 14H, 14H NA, 16G, 16H, 16H NA
14G, 14H, 14H NA, 16G, 16H, 16H NA
1034953
MOUNTING
120H, 120H ES, 120H NA, 120K, 120K 2, 12H, 12H ES, 12H NA, 12K, 135H, 135H NA, 140H, 140H ES, 140H NA, 140K, 140K 2, 143H, 14H, 14H NA, 160H, 160H ES, 160H NA, 160K, 163H, 163H NA, 16H, 16H NA
120H, 120H ES, 120H NA, 120K, 120K 2, 12H, 12H ES, 12H NA, 12K, 135H, 135H NA, 140H, 140H ES, 140H NA, 140K, 140K 2, 143H, 14H, 14H NA, 160H, 160H ES, 160H NA, 160K, 163H, 163H NA, 16H, 16H NA
3189355
MOUNTING-CABLE TIE
120M 2, 12M 2, 12M 3, 12M 3 AWD, 140M 2, 140M 3, 140M 3 AWD, 160M 2, 160M 3, 160M 3 AWD, 2570C, 2670C, 2864C, 336F L, 349E, 349E L, 349E L HVG, 349E L VG, 349F L, 3516C, 374F L, 390F L, 563C, 573C, 58...
120M 2, 12M 2, 12M 3, 12M 3 AWD, 140M 2, 140M 3, 140M 3 AWD, 160M 2, 160M 3, 160M 3 AWD, 2570C, 2670C, 2864C, 336F L, 349E, 349E L, 349E L HVG, 349E L VG, 349F L, 3516C, 374F L, 390F L, 563C, 573C, 58...
1345096
MOUNTING GP-TRANSFORMER
3612, 3616
3612, 3616
1353362
MOUNTING GP-TRANSFORMER
3606, 3608, 3612, 3616, G3612, G3616
3606, 3608, 3612, 3616, G3612, G3616
4169046
MOUNTING GP-CIRCUIT BREAKER
C15 I6, C18 I6
C15 I6, C18 I6
4373522
MOUNTING
XQC1200, XQC1600
XQC1200, XQC1600