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DIY - Transfer Case Fluid Change

6612 Views 9 Replies 6 Participants Last post by  DudeCS
If you were able to DIY the differential fluid, you should be able to DIY the transfer case fluid. The transmission fluid change is a separate service that should be done about the same time. You will use less than 0.5 quarts of fluid for the transfer case.

Supplies:
  • 1 quart - Honda 08200-9014 Hypoid Gear Oil Hgo-1 Gl-5 75W-85 (current price with shipping between $25 to $30... Amazon, dealership, online seller)
  • 2 pieces - 20mm crush washer P/N 94109-20000 (same as one for the differential)
Tools:
  • 3/8" breaker bar
  • 3/8" torque wrench - set at 44Nm
  • 3/8" short extension, as needed
  • fluid pump for quart bottle or nozzle
  • small bucket or oil pan... and large scrap cardboard to catch the splatter
  • floor jack & jack stands... may not be necessary, but helps with clearance for the breaker bar and torque wrench
Procedure:
  • drive the car to warm up the transfer case
  • locate the transfer case - 1st photo (from the front), adjacent to the exhaust pipe
  • locate the fill plug - 2nd photo, front side of the transfer case
  • locate the drain plug - 2nd photo, bottom of the transfer case
  • if necessary, use the front center jack point (photo 3) to raise the vehicle and place jack stands on left front and right front jack points
  • in the following order: 1) loosen the side fill plug, 2) loosen the bottom drain plug
  • remove bottom drain plug and drain fluid into the oil pan
  • remove floor jack and jack stands to completely drain fluids... that is, level the car
  • replace bottom drain plug with a new crush washer and torque to 44Nm
  • fill transfer case with new fluids until it overflows... approximately 0.45 quarts
  • replace side fill drain plug with a new crush washer and torque to 44Nm (raise vehicle for clearance to complete torque, if necessary)
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I've never done the transfer case yet. Is it doable without raising the car since I can easily do the rear diff without raising it?
I've never done the transfer case yet. Is it doable without raising the car since I can easily do the rear diff without raising it?
It is possible, if you can apply enough force with a ratchet or breaker bar. The fill plug was the problem for me because I am a skinny runt ;) Be sure that you can loosen the fill plug first. Access to the drain plug is not a problem. Oh, a short 3/8" extension is helpful too.
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Appreciate you putting up these collections of DIY guides in the forum. You are definitely appreciated of your hard work!!
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Is the transfer case fluid the same as the rear diff. fluid? Honda Dual Pump Fluid II
Is the transfer case fluid the same as the rear diff. fluid? Honda Dual Pump Fluid II
No, see the first post... Honda 08200-9014 Hypoid Gear Oil Hgo-1 Gl-5 75W-85
Honda 08200-9014 Hypoid Gear Oil Hgo-1 Gl-5 75W-85
Thanks
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at what mileage should this fluid be changed?
at what mileage should this fluid be changed?
Do it in conjunction with the transmission fluid change... Maintenance Minder notification or between 30K to 60K miles, depending on your usage.
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