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MANIFOLD, EXHAUST MIDDLE 7099296C2 - Caterpillar



7099296C2 MANIFOLD, EXHAUST MIDDLE Caterpillar parts MANIFOLD
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71
Alternative (cross code) number:
CA7099296C2
70992-96C2
7099296C2
Caterpillar 7099296C2 MANIFOLD, EXHAUST MIDDLE

Buy MANIFOLD, EXHAUST MIDDLE 7099296C2 Caterpillar genuine, new aftermarket tractor parts with delivery

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Cleaning of the Fuel Injection Nozzles
Before a fuel injection nozzle is tested, remove any loose carbon from the tip of the fuel injection nozzle. Do not use abrasive material or a wire brush in order to clean the nozzle. The fuel injection nozzle is not a serviceable part. Disassembling or adjusting the nozzle will violate the standards for emissions. Note: Extra care should be used in handling the fuel injection nozzle in order to prevent damage to the nozzle tip. A scratch or a burr could cause needle leakage or spray distortion. Dirt in the orifices of the nozzle tip can damage engine components. Dirt can also distort the spray pattern of the nozzle. Test the Spray Pattern
Ensure that you wear eye protection at all times during testing. When fuel injection nozzles are tested, test fluids travel through the orifices of the nozzle tip with high pressure. Under this amount of pressure, the test fluid can pierce the skin and cause serious injury to the operator. Always keep the tip of the fuel injection nozzle pointed away from the operator and into the fuel collector and extension.
Illustration 2 g00322083
Correct spray pattern for a fuel injection nozzle
Connect fuel injection nozzle (3) to the tooling that is shown in Illustration 3. Position the fuel injection nozzle so that the fuel spray is directed into the 1U-8857 Extension (4) and the 8S-2270 Fuel Collector (6).
Close the gauge protector valve and the shutoff valve. Open the pump isolator valve.
Pump the nozzle tester at approximately 60 strokes per minute and look at the spray pattern when the fluid begins to flow through the orifices of the fuel injection nozzle. The spray, which flows from all of the orifices, must have the same pattern. The fuel injection nozzle is faulty if there is a difference in the vertical patterns or a difference in the horizontal patterns. Refer to the correct spray pattern in Illustration 2. Note: If the nozzle tester is pumped too slowly, the fuel injection nozzle can develop a hydraulic lock. If this situation occurs, release the nozzle cap nut in order to release the pressure and then tighten the nozzle cap nut to a torque of 34 3 N m (25 2 lb ft). Test the spray pattern again.Note: Be sure that the gauge protector valve is closed before the fuel injection nozzle is removed from the nozzle tester. Closing the valve will prevent damage to the pressure gauge.Pressure Test
Ensure that you wear eye protection at all times during testing. When fuel injection nozzles are tested, test fluids travel through the orifices of the nozzle tip with high pressure. Under this amount of pressure, the test fluid can pierce the skin and cause serious injury to the operator. Always keep the tip of the fuel injection nozzle pointed away from the operator and into the fuel collector and extension.
Illustration 3 g01141684
5P-4150 Nozzle Testing Group
(1) 5P-4718 Adapter
(2) 6V-2170 Tube assembly
(3) Fuel injection nozzle
(4) 1U-8857 Extension
(5) 8T-5313

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