Hydraulic W451 Cartridge Assembly

The W451 base-mounted filter series provides for easy servicing featuring top cover access for filter changeout. Ductile iron filter head design provides for SAE ports along with optional space saving manifold mounting. This product features the popular HF4 automotive filter. 

Features

• Meets HF4 specification
• Differential pressure indicator line works with an assortment of by-pass valves
• Thermal lockout and surge control are available in many of the differential pressure indicators
• High collapse filter available for use with non-by-pass applications
• Three housing length options for design flexibility
• Range of indicators: visual pop-up, electrical/visual and electrical options
• Ductile iron filter head design provides for SAE ports along with optional space saving manifold mounting
• Top cover access for easy servicing
• Base drain plug
• Cover bleed/fill plug
• Fluorocarbon seals are standard
• Working pressure to: 310 bar / 4500 psi
• Rated static burst to: 931 bar / 13,500 psi
• Fatigue pressure rating: 207 bar / 3000 psi
• Flow range to: 568 lpm / 150 gpm
• Porting size options: 
  • SAE-24 o-ring
  • 1-½" 4-Bolt Flange Code 61 or 62
  • Manifold mounting
• Standard by-pass ratings of: 
  • 3.5 bar / 50 psi
  • 6.2 bar / 90 psi
  • No by-pass

Benefits

• Rugged construction for reliable performance – cast iron base and cover combined with a steel cylinder for strength and reliability
• Highly configurable – with a variety of assembly, cartridge and indicator choices
• Featuring our high-performance DT filters with multiple efficiency options – allowing you to achieve the performance you need for most any application

Applications

• High pressure circuits
• Mobile equipment
• In-plant systems

Available Media Types

• Donaldson high-performance DT cartridges with exclusive Synteq™ – synthetic fiber media for greater filtration efficiency and higher dust-holding capacity
• Many different efficiency grades from which to choose
• Water absorbing media

This servicing information is provided as a best practices guide. It is not intended to replace or supersede the service instructions supplied by your engine or vehicle manufacturer.

Cartridge Servicing

1. Check the filter service indicator
   Check to see that the OEM specified service interval has been reached or that the service indicator shows that the filter is due for servicing.
   
   
2. Turn system off and release pressure
   Ensure that the hydraulic system is turned off.
   Check that there is no pressure present.
   
   
3. Remove the cartridge housing
   
   
4. Remove the used filter and gasket, if applicable
   Properly dispose of the cartridge according to local regulations.
   
   
5. Clean the head seal area and housing
   Clean out any sediment from the inside of the filter housing.
   
   
6. Inspect the new filter cartridge for damage
   Check the new filter you will be installing for any shipping and handling damage. Do not install a damaged filter.
   
   
7. Install and lubricate seals, gaskets and threads. 
   Lubricate the o-rings, gaskets, housing seals and threads with clean system oil.
   
   
8. Install new cartridge into the housing
   
   
9. Align threads. Spin filter until gasket contacts
   Fit the housing to the filter head as instructions on the housing.
   
   
10. Install housing according to manufacturer instructions
    
    
11. Bleed the hydraulic system and check for leaks