Brand: CAT Caterpillar
Model: 511-7975 / 5117975
Applicable engine: C9 series
Function: Responsible for delivering fuel to the engine, improving fuel injection efficiency and combustion efficiency
Origin: United States
Quality control: After strict quality control and testing, ensure perfect matching with the engine
Other related information
1. Preparation
Tool preparation: Make sure all necessary tools are ready, such as wrenches, screwdrivers, etc.
Environmental cleanliness: The working environment should be kept clean to prevent impurities from entering the fuel system.
2. Remove the old fuel pump
Operate carefully: When removing the old fuel pump, be careful to avoid damaging the surrounding parts.
Mark the connection parts: Pay attention to mark the positions of each connection part and line for subsequent installation.
3. Install the new fuel pump
Sealing gasket: Make sure the sealing gasket of the fuel pump is installed in place to prevent fuel leakage.
Fixing screws: Gently put the fuel pump into the installation position and tighten the fixing screws according to the specified torque.
Line connection: The line connection should be firm, ensure good contact, and avoid short circuit or open circuit.
Oil pipe connection: The connection of the oil pipe should be tight, and check whether the oil pipe is damaged or aged.
4. Test
Start the engine: After completing the installation, start the engine, observe the working status of the fuel pump, and check whether there are abnormal noises, oil leakage and other problems.
5. Safety precautions
Prevent debris from entering: During the installation process, all holes of the unit should be covered to prevent debris from falling into the machine.
Install the filter: To prevent debris in the pipeline from entering the pump, a filter should be installed at the pump inlet for the newly installed pipeline, and its effective cross-section should be greater than 2/3 times the suction pipe cross-section.
Check the suction pipeline: The installation height, length and pipe diameter of the oil pump suction pipe should meet the calculated values, and strive to be short and reduce unnecessary losses (such as elbows, etc.).
Bracket installation: The suction and discharge pipelines of the oil pump should have brackets, and the pump is not allowed to bear the load of the pipeline.
6. Final inspection
Trial run: After the unit is actually tested for 2-3 hours, a final inspection is carried out. If there is no adverse phenomenon, the installation is considered qualified.
Check the bearings: Check the temperature and vibration of the bearings during the trial run.
