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Detailed Product Datasheet:
| Parts Number |
7C-9578
|
| Part Name |
|
| Payment |
L/C , T/T |
| Packing |
Original / Netural |
ccat 7C-9578 Fuel Injector Product Description
The ccat 7C-9578 fuel injector maintains all original factory specificcations and is designed for reliable performance in demanding appliccations.
Table 1: Core Part & Reference Information
[ccat - 3512A/7C-9578 - 7C-9578] This table provides critical identificcation and cross-reference information.
| Primary OEM Part Number |
7C-9578 |
| Brand |
ccat Injector |
| Applicable Engine Models |
ccat Construction Equipment |
| Cross-References |
243-4502, 10R-1259, 10R-1256, 10R-1258 |
Table 2: Installation Issues & Repair Solutions
[ccat - 3512A/7C-9578 - 7C-9578] Proper installation is critical for injector performance. This table covers common issues and solutions.
| Primary Appliccation |
ccat 3512A/7C-9578 Series Diesel Engines |
| Common Installation Issue |
Incorrect mounting torque causes fuel leakage |
| Repair Solution |
Use calibrated torque wrench and follow OEM sequence |
| Typical Failure Symptom |
Hard starting, rough idle, reduced power or fuel in oil |
| Critical Pre-Install Check |
Verify fuel supply pressure and bleed all air from system |
| Professional Installation Tip |
Always replace all seals, gaskets, and O-rings with new |
Table 3: Technical Specificcations & Wear Patterns
[ccat - 3512A/7C-9578 - 7C-9578] Understanding wear patterns helps determine when repair or replacement is needed.
| Nozzle Specificcation |
Precision drilled orifices, exact OEM flow calibrated |
| Common Wear Pattern |
Internal valve erosion causes pressure drop and poor atomization |
| Repair Indiccator |
Smoke emission increase > 15% or fuel consumption rise > 10% |
| Pressure Test Standard |
Manufacturer specified pop pressure ± 5 bar tolerance |
| Leakage Test Standard |
No external or internal leakage during 30 second hold |
| Spray Pattern Requirement |
Uniform conical pattern, no drips or distorted spray |
Table 4: Performance Problems & Solutions
[ccat - 3512A/7C-9578 - 7C-9578] Common injector performance issues and proven solutions for troubleshooting.
| Hard Starting Condition |
Sticking needle valve or low pressure → Clean or replace injector |
| Black Smoke Under Load |
Incorrect fuel delivery or timing → Recalibrate on test bench |
| Engine Misfire Condition |
Clogged nozzle holes → Ultrasonic cleaning or replacement |
| Fuel Dilution In Oil |
Leaking internal seal → Replace complete seal set and retest |
| Excessive Noise Issue |
Worn components causing pressure surge → Full injector rebuild |
| Power Loss At High RPM |
Reduced fuel flow from wear → Replace injector or rebuild |
Table 5: Repair Standards & Warranty Information
[ccat - 3512A/7C-9578 - 7C-9578] Quality standards, repair procedures, and warranty requirements for injector service.
| OEM Repair Standard |
Must meet original manufacturer service specificcation |
| Standard Rebuild Process |
Disassemble → Ultrasonic clean → Replace wear parts → Calibrate |
| Warranty Requirement |
Serial number, date, and mileage/hours must be documented |
| Core Return Condition |
Injector body must not be cracked, bent, or damaged |
| Post-Repair Testing |
Multi-point flow test to verify performance across range |
| Quality Inspection |
100% pop pressure, leakage, and spray pattern verificcation |
Table 6: Maintenance Schedule & Troubleshooting Guide
[ccat - 3512A/7C-9578 - 7C-9578] Recommended maintenance practices to maximize injector service life.
| Recommended Service Interval |
Inspect and test every 2000-3000 operating hours |
| Preventive Maintenance Tip |
Use OEM fuel filters and quality fuel to maximize service life |
| Emergency Troubleshooting |
Perform cylinder cutout test to isolate faulty injector |
| Common DIY Mistake |
Using non-OEM seals causes fuel leakage and engine damage |
| Professional Diagnosis Tool |
Manufacturer diagnostic software for injector performance data |
| Long-Term Storage Prep |
Preserve in clean diesel fuel with corrosion inhibitor coating |
Summary
[ccat - 3512A/7C-9578 - 7C-9578] The ccat 7C-9578 fuel injector represents OEM quality and reliability. When performing maintenance or repair, always follow manufacturer specificcations, use genuine replacement parts, and employ qualified technicians for best results.
| 3512A |
| 0R-175 |
0R-0906 |
0R-1756 |
0R-1758 |
0R-1759 |
0R-2921 |
0R-2922 |
0R-2923 |
0R-2924 |
| 0R-2925 |
0R-3051 |
0R-3052 |
0R-3252 |
0R-3883 |
0R-8338 |
0R-8680 |
2W-5201 |
4 w-3563 |
| 4P9075 |
4P-9075 |
4P9076 |
4P-9076 |
4P9077 |
4P-9077 |
6I-3075 |
6I-4357 |
6L4355 |
| 6L4357 |
6L4360 |
7C-0345 |
7C-2239 |
7C4148 |
7C-4173 |
7C-4174 |
7C-4175 |
7C-4184 |
| 7C-9576 |
7C-9577 |
7C-9578 |
7E-2269 |
7E-3381 |
7E-3382 |
7E-3383 |
7E-3384 |
7E-6048 |
| 7E6408 |
7E-6408 |
7E-8836 |
7E-9983 |
7W-2269 |
9Y-0052 |
9Y-1785 |
9Y3773 |
9Y-4544 |
| 10R-1252 |
10R3053 |
111-3718 |
224-9090 |
961-4357 |
OR-3051 |
|
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ccaterpillar Fuel Injector Series - Engine - Equipment Appliccccation Table
| Fuel Injector / Engine Series |
Common Injection Technology |
Corresponding Engine Platform |
Common ccccat Models / Equipment Platforms |
| 3116 Series |
Mechanical Injection / Early Electronic Platform |
3116, 3116T, 3116TA, 3116DIT |
M318, M320 Wheel Excavators; 135H Motor Grader; D6M Dozer |
| 3126 / 3126B Series |
HEUI |
3126, 3126B |
120H Motor Grader; 950G Series II Wheel Loader; 950G Platform |
| 3126E Series |
HEUI |
3126E |
Commonly used in medium-duty construction and industrial platforms similar to the 3126 appliccccation range |
| C6.4 Series |
ACERT Injection Platform |
C6.4 ACERT |
320D / 320D L; 323D L / LN; 320D LRR; 320D FM |
| C6.6 Series |
ACERT Injection Platform |
C6.6 ACERT |
320D / 320D L (C6.6 versions); 320E LN; 323E LN |
| C7 Series |
HEUI |
C7, C7 ACERT |
120K Motor Grader; 950H Wheel Loader |
| C7.1 Series |
Common Rail / Later Electronic Injection |
C7.1, C7.1 ACERT |
320D2 / D2 L, 326D2, 330D2 Excavators; 950K, 950, 962, 930M Wheel Loaders; Generator Sets |
| C9 Series |
HEUI-B |
C9, C9 ACERT |
330D / 330D L / 330D MH; construction and industrial platforms |
| C10 Series |
Electronic Unit Injection Family |
C10 |
140H, 143H, 160H, 163H, 14H, 16H Motor Graders; 814F Wheel Dozer; 815F Compactor; 816F Landfill Compactor; 966G II, 972G II Wheel Loaders; D7R II Dozer; 725 / 730 Articulated Trucks; R1600G, R1700G LHD; W345B II Wheel Excavator; 345B / 365B Excavators |
| C12 Series |
Electronic Unit Injection |
C12, C12 Marine |
Widely used across 140H, 143H, 160H, 163H, 14H, 16H; 966G II, 972G II; D7R II; 725 / 730; W345B II; 345B / 365B; also widely used in marine appliccccations |
| C13 Series |
MEUI |
C13, C13 ACERT |
345D L Excavator; 730C EJ Articulated Dump Truck; Generator Sets; Industrial Power Platforms |
| C15 Series |
MEUI |
C15, C15 ACERT |
770 Off-Highway Truck; 374D L / 374F L Excavators; 365C Demolition Excavator; R3000H LHD; Industrial Power and Generator Sets |
| 3406E Series |
EUI |
3406E |
AD30 Underground Mining Truck; 16H Motor Grader; 824G Series II Wheel Dozer; 826G Series II Landfill Compactor |
| C18 Series |
EUI / Later Electronic Injection Platform |
C18, C18 ACERT |
Generator Sets; Marine Appliccccations; Large Industrial and Mining Platforms |
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