[Healeys] Overdrive pressures

[Hank Leach]

Those higher pressures show a healthy OD and you are probably using
the modern rubber O-rings rather than the steel originals. However,
one thing to check is the bleed down-release of pressure. If after
stopping the unit the pressure should slowly leak down to 0 and/or if
you worked the lever a few times it would bleed out. If that does not
happen, there is dirt in the operating valve passage and must be
cleared to function properly. If left unattended, the unit will not
come out of overdrive and if the vehicle is backed up, damage would be
done to the unit. Hank

	-----------------------------------------From: "John and Kerry Rowe" 
To: "David Wirken"
Cc: healeys at autox.team.net
Sent: Wednesday August 9 2023 12:50:16AM
Subject: Re: [Healeys] Overdrive pressures

 I would be very happy with those pressures. I wish! 
 On Tue, Aug 8, 2023 at 1:39 PM David Wirken via Healeys  wrote:
  Recently overhauled OD when testing the pressure, it measured 500 to
550 psi on the gauge.The book says it should be 470 to 490 PSI and
drops about 80 PSI when engaged or disengaged and jumps back up to 470
PSI very quickly. Question is " should I be concerned about the high
numbers I am experiencing ? 
 THANKS for your input 
 Dave  _______________________________________________
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