Introduction
This manual provides essential information for the proper installation, operation, and maintenance of the Baldwin Filters F919-C Heavy Duty Wound Cotton Fuel/Hydraulic Sock. This filter is designed to protect your engine and hydraulic systems from contaminants present in fuel and hydraulic fluids. Adhering to these instructions will help ensure optimal performance and longevity of your equipment.
Safety Information
WARNING:
- Always wear appropriate personal protective equipment (PPE) such as gloves and eye protection when handling fuel or hydraulic fluids.
- Ensure the engine is turned off and cooled down before attempting any filter installation or maintenance.
- Relieve system pressure before opening any fuel or hydraulic lines to prevent injury.
- Dispose of used filters and contaminated fluids according to local environmental regulations.
- Fuel and hydraulic fluids are flammable. Keep away from open flames, sparks, and other ignition sources.
Installation Instructions
The Baldwin F919-C filter sock is designed for specific fuel or hydraulic filter housings. Refer to your equipment's service manual for exact installation procedures and housing compatibility.
- Preparation: Ensure the vehicle or equipment is on a level surface, the engine is off, and the system pressure is relieved. Place a drain pan beneath the filter housing to collect any spilled fluid.
- Remove Old Filter: Carefully open the filter housing according to your equipment's manual. Remove the old filter element and any associated seals or gaskets.
- Clean Housing: Thoroughly clean the inside of the filter housing, removing any debris or sludge. Inspect the housing for damage.
- Install New Filter: Insert the new Baldwin F919-C wound cotton filter sock into the housing. Ensure it is seated correctly and securely. Replace any O-rings or gaskets as recommended by the equipment manufacturer.
- Secure Housing: Close and tighten the filter housing to the manufacturer's specifications. Do not overtighten.
- Prime System (if necessary): For fuel systems, it may be necessary to prime the system to remove air. Consult your equipment's manual for priming procedures.
- Check for Leaks: Start the engine and allow it to run for a few minutes. Carefully inspect the filter housing area for any signs of leaks. If leaks are detected, shut off the engine immediately and re-check the installation.

Image: Baldwin Filters F919-C Wound Cotton Fuel/Hydraulic Sock. This image shows the cylindrical, off-white wound cotton filter sock, designed for fuel or hydraulic filtration.
Operation
Once properly installed, the Baldwin F919-C filter operates passively within your fuel or hydraulic system. Its wound cotton media effectively captures particulate contaminants, preventing them from reaching sensitive engine components or hydraulic parts. The filter continuously cleans the fluid as it passes through, maintaining system purity.
Maintenance
Regular filter replacement is crucial for maintaining the performance and longevity of your equipment. The service interval for the F919-C filter sock depends on the specific application, operating conditions, and fluid quality.
- Replacement Schedule: Always refer to your equipment manufacturer's service manual for recommended filter replacement intervals. These intervals are typically based on operating hours, mileage, or a time-based schedule.
- Signs of Clogging: A clogged filter can lead to reduced fuel flow, decreased engine performance, or impaired hydraulic function. If you notice any of these symptoms, inspect and potentially replace the filter.
- Disposal: Used filters contain hazardous materials. Dispose of them responsibly according to all applicable local, state, and federal regulations.
Troubleshooting
If you experience issues after installing or during the use of the F919-C filter, consider the following:
- Fluid Leaks:
- Ensure the filter housing is properly sealed and tightened to specifications.
- Check that all O-rings and gaskets are correctly seated and not damaged.
- Reduced Flow/Performance:
- The filter may be clogged due to excessive contamination. Replace the filter.
- Verify that the correct filter model (F919-C) is installed for your application.
- Check for air in the system, especially after fuel filter replacement.
- Engine Stalling/Rough Running (Fuel Systems):
- This could indicate a severely clogged fuel filter restricting fuel supply. Replace the filter.
- Ensure the fuel system is properly primed and free of air.
If problems persist, consult a qualified service technician or refer to your equipment's service manual.
Specifications
| Brand | Baldwin Filters |
| Model | F919-C (Hydraulic/Fuel Filter, 7-7/8 x 1-3/4 In) |
| Product Grade | Performance Part |
| Vehicle Service Type | Truck |
| Style | Heavy Duty, Wound Cotton Sock |
| Item Weight | 4.54 ounces (approx. 128.7 grams) |
| Product Dimensions | 7.7 x 1.8 x 1.8 inches (approx. 19.56 x 4.57 x 4.57 cm) |
| Manufacturer Part Number | F919-C |
| UPC | 791440010147 |
Note: Specifications are subject to change without notice. Always verify compatibility with your specific application.
Warranty Information
For detailed warranty information regarding the Baldwin Filters F919-C, please refer to the official Baldwin Filters website or contact their customer service directly. Warranty terms and conditions may vary.
Customer Support
If you have questions about the Baldwin Filters F919-C or require technical assistance, please visit the official Baldwin Filters website or contact their customer support department. Contact information can typically be found on their website or product packaging.
Baldwin Filters Official Website: www.baldwinfilters.com





