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ALTERNATOR 3789640 - Caterpillar


3789640 ALTERNATOR Caterpillar parts C6.6, CS-56B, CS-74B, CW-34
Rating:
27
Alternative (cross code) number:
CA3789640
378-9640
3789640
Caterpillar 3789640 ALTERNATOR
Weight: 17 pounds 7 kg.

Buy ALTERNATOR 3789640 Caterpillar genuine, new aftermarket tractor parts with delivery
INDUSTRIAL ENGINE, VIBRATORY COMPACTOR,

Related part:
3789640  ALTERNATOR GP -B  20R4763  R

You can buy:

Alternator (C6.6-666)
$517,30

03 Jun 2025
Massy Machinery Ltd

Compare Prices: .

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$472.06

17 Oct 2025

CN: zhengzhoulaolei
ATG11622 Alternator for 2871A902 2871A903 3789640 11.203.102 11.203.502 11.203.694 11.203.702 MG142
DrTBMx Auto Starter|High Voltage Output:Delivers a robust 24V, ensuring reliable power for your vehicle's electrical needs. || Robust Amperage Capacity:With 100 amps, this alternator keeps your engine running smoothly and efficiently. || Wide OEM Compatibility:Cross-references with multiple OEMs, making it a versatile replacement option. || Quality: construction ensures durability and performance, meeting or exceeding OEM standards. || Easy Installation:Designed for a seamless fit, making installation a breeze for both professionals and DIY enthusiasts.
$378.42

17 Oct 2025

CN: shenfanglan mel
Aftermarket ATG11622 Alternator Compatible For PERKINS 2871A902 2871A903 3789640 11.203.102 11.203.502 11.203.694 11.203.702 MG142
RGAFLJIJ Built with high-quality materials and advanced engineering to withstand heat, vibration, and demanding operating conditions. || Delivers steady electricity to keep your battery charged and support all your vehicle’s electrical needs reliably. || Regulates voltage output to prevent overcharging and safeguard sensitive electronic components from damage. || Takes over from the battery to continuously power the vehicle's electrical system after the engine starts, reducing the battery load. || Voltage stabilization: Controls the output voltage via a regulator to prevent voltage fluctuations from damaging electrical components.
$410.94

17 Oct 2025

US: Yueyue Bird
VXTMXEWTPC 24V 100A Alternator fits Industrial Engines Pns 11203502 11203694 100-Amperage Internal-Fan Clockwise-Rotation
VXTMXEWTPC Part Number:11204337,AAN5546,11203502,AAN5124,11204244,2205660,AAN5595,686696455692,3789640,AAN5806,11204258,11204255,11203694 || Amperage:100 || Fan:Internal || Item Description:Alternator || Replaces:11.203.502 11.203.102 Aan5124 Aan5546 Aan5595 Aan5806 3789640 || Rotation:Clockwise || Feature1: English || Feature2: Show Navigationhide Navigation || Feature3: Newly Listed || Feature4: Ending Soon
Number on catalog scheme: 1
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Compatible equipment models: 3789640:

INDUSTRIAL ENGINE  C6.6  
PNEUMATIC COMPACTOR  CW-34  
VIBRATORY COMPACTOR  CS-56B   CS-74B   Caterpillar

Information:

Assembly Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     1P-0510     Driver Group     1    
B     1P-0808     Multipurpose Grease     -    
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01029786
Install bearing (4) in pulley (5) .
Install lip seal (3) with Tooling (A), as shown. Apply Tooling (B) to the lip of the seal.
Install spacer (2) so the end with the taper is toward the inside of pulley (5) .
Install spacer (6) and bearing (9) in the front of pulley (5) .
Position O-ring seal (7) on the front of pulley (5). Install the pulley on shaft assembly (1) .
Install retainer (10) and bolts (11). Tighten bolts (11) to a torque of 25 6 N m (18 4 lb ft).
Install the fan adapter on pulley (5). Tighten bolts (8) to a torque of 47 9 N m (35 7 lb ft).
Fill the fan drive with Tooling (B) .End By: Install the fan drive. Refer to Disassembly and Assembly, "Fan Drive - Install".

Caterpillar parts catalog:

Caterpillar parts catalog
C6.6 Industrial Engine 66600001-UP
CS56B,CP56B,CS68B,CP68B Vibratory Soil Compactor M4M00001-UP (MACHINE) POWERED BY C6.6 Engine
CW34 Pneumatic Compactor J3H00001-UP (MACHINE)
CS68B, CP68B Compactor 43900001-UP (MACHINE) POWERED BY C6.6 Engine
CS78B Compactor 44300001-UP (MACHINE) POWERED BY C6.6 Engine
CS56B Compactor 43700001-UP (MACHINE) POWERED BY C6.6 Engine
CS74B Compactor 44100001-UP (MACHINE) POWERED BY C6.6 Engine
CW34 Pneumatic Compactor C3400001-UP (MACHINE) POWERED BY C4.4 Engine
CS74B, CP74B, and CS78B Compactor-Vibratory Soil E7E00001-UP (MACHINE) POWERED BY C6.6 Engine
CS79B Vibratory Soil Compactor C7900001-UP (MACHINE) POWERED BY C6.6 Engine


Parts alternator Caterpillar catalog:

2267683 ALTERNATOR GP-CHARGING
140H, 143H, 14H, 160H, 163H, 16H, 2384C, 2470C, 2484C, 2570C, 2670C, 2864C, 374F L, 390F L, 553C, 559C, 563C, 573C, 579C, 586C, 770G, 772G, 773F, 775F, 777C, 777D, 777F, 844H, 953D, 963D, 990H, AD55B,...
2776080 ALTERNATOR GP-CHARGING
2470C, 553C, 953D, 963D, C6.6, D6K, D6K LGP, D6K XL, D6N, PL61, R1300G II
3832557 ALTERNATOR
3054C, 3054E, 3056E, 414E, 416D, 416E, 416F, 420D, 420E, 420F, 422E, 422F, 424D, 428D, 428E, 428F, 430D, 430E, 430F, 432D, 432E, 432F, 434E, 434F, 442D, 442E, 444E, 444F, 450E, C4.4, C6.6, CB-54B, D3K...
3832556 ALTERNATOR
414E, 416E, 422E, C4.4, C6.6
3991485 ALTERNATOR
3054C, 3054E, 420E, 914G, AP-600D, AP-655D, AP1000E, AP1055E, AP555E, BG500E, BG600D, BG655D, C4.4, C6.6, CP-56, CP-76, CS-54B, CS-64, CS-74, IT14G, IT14G2, M313D, M315C, M315D, M315D 2, M316D, M317D ...
2253147 ALTERNATOR GP-CHARGING
924G, 924GZ, 930G, C6.6, IT28G, M316C, M318C, M318C MH, M322C
2907110 ALTERNATOR GP-CHARGING
C6.6, CS-56B, CS-68B, CS-74B, CS-78B, CW-34
2907110 ALTERNATOR GP-CHARGING
C6.6, CS-56B, CS-68B, CS-74B, CS-78B, CW-34
2253147 ALTERNATOR GP-CHARGING
924G, 924GZ, 930G, C6.6, IT28G, M316C, M318C, M318C MH, M322C
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