Hydraulic FMK Cartridge Assembly

The FMK series are strong and durable medium pressure in-line filters with a tempered aluminum head and aluminum bowl. The cartridge style allows for easy servicing.

Features

• Mix and match, stocked heads and filters
• Date & time functionality on some versions
• Operating pressure up to 120 bar / 1740 psi
• Static pressure testing up to 180 bar / 2610 psi
• Collapse resistance up to 20 bar / 290 psi
• Flow rate ranges from 40 to 80 lpm / 10.6 to 15.9 gpm
• Service indicators available

Benefits

• Designed to handle heavy-duty applications
• Wide range of cleanliness ratings

Applications

• Hydrostatic charge pumps
• Hydrostatic transmission
• Pilot control circuits

Available Media Types

• Donaldson exclusive Synteq™ – synthetic fiber media for greater filtration efficiency and higher dust-holding capacity
• Natural fiber cellulose
• Stainless steel wire-mesh

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 power off and bleed pressure
   Ensure that the hydraulic system is turned off.
   Check that there is no pressure present.
   
   
3. Remove the housing cover
   
   
4. Remove the used filter, gasket and spring (if applicable)
   Properly dispose of the cartridge according to local regulations.
   
   
5. Clean the filter mount, cap and inside the 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. Lubricate the filter gasket with a thin layer of clean motor oil
   
   
8. Install new filter cartridge and spring (if applicable)
   Install filter into the housing.
   
   
9. Reinstall the housing cover
   
   
10. Bleed the system and check for leaks