Duramax® HMK03 Hydraulic Spin-On Assembly

HMK03 Series Duramax® spin-on filters offer twice the capacity of competitive filters, yet they are physically smaller than traditional housing/cartridge filter assemblies. They deliver a strong, durable die cast aluminum head construction and a unique radial seal o-ring gasket design that eliminates leakage.

Features

• Strong, durable die cast aluminum head
• Special radial seal o-ring gasket design that eliminates leakage
• Variety of media type and configuration options
• Variety of indicator types and by-pass options
• Working pressures to: 69 bar / 1000 psi
• Rated static burst to: 138 bar /2000 psi
• Flow range to: 95 lpm / 25 gpm
• Porting size: SAE-12 o-ring
• Standard by-pass ratings:
  • 3.5 bar / 50 psi
  • No by-pass

Benefits

• Proven Duramax filters deliver dependable performance 
• Twice the contaminant holding capacity of competitive filters
• Unique, compact space-saving configuration
• Flexible mix and match system of in-stock heads and housings – so you can get exactly what you need

Applications

• Hydrostatic charge pumps
• Hydrostatic transmission
• Pilot control circuits
• Refrigeration compressor circuits

Available Media Types

• Donaldson exclusive Synteq™ – synthetic fiber media for greater filtration efficiency and higher dust-holding capacity
• Many different efficiency grades from which to choose

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.

Spin-On Filter 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. Unscrew and remove the old filter and gasket
   Properly dispose of the used filter according to local regulations.
    
4. Wipe the filter head with a clean cloth
   
   
5. Inspect the new filter for damage
   Check the new filter you will be installing for any shipping and handling damage. Do not install a damaged filter.
   
   
6. Lubricate threads
   
   
7. Apply a thin film of motor oil to the gasket
   
   
8. Align threads – spin filter until gasket contact
   Fit the housing to the filter head as instructed on the housing.
   
   
9. Follow the icons on the filter to tighten
   Do not over-tighten.
   
   
10. Bleed the system and check for leaks