Tech Tip # 1 Gerotor Seal Height
Did you know the HGA series gerotor seal is actually taller than the steel gerotor retaining ring? Even though it looks odd, it is taller! So if you think we shipped the incorrect seal because the seal is taller then the steel ring, chances are we shipped the correct seal. Before you trim the seal to fit please look at the photos and read this post!
The HGA gerotor seal is rubber and designed to be taller than the retaining ring. (Please see our Photo #1 Photo #2 ) When assembled the seal is compressed forming a complete seal.
We frequently receive calls stating the seal is taller than the seal that was removed. The rubber seal shrinks from age, and exposure to many heating and cooling cycles.
HGA | Seal retainer | Rotor Seal | Seal # |
HGA07 | 1.436″ | 1.585″ | 032625 |
HGA08 | 1.497″ | 1.648″ | 032626 |
HGA09 | 1.560″ | 1.717″ | HGA09RS |
HGA10 | 1.623″ | 1.786″ | 032618 |
HGA12 | 1.748″ | 1.923″ | 032619 |
HGA14 | 1.873″ | 2.066″ | 032627 |
HGA16 | 1.998″ | 2.203″ | 032628 |
HGA20 | 2.248″ | 2.511″ | 032620 |
HGA24 | 2.498″ | 2.753″ | 032629 |
HGA28 | 2.747″ | 3.026″ | 032621 |
HGA32 | 2.998″ | 3.313″ | 032759 |
Chart is in US inches
Please see exploded view
Service Manual is available here
If you have any questions or any suggestions for future posts please contact us sales@mwdirectional.com or call us @ 1.800.237.5048