[Healeys] o/d problem

[Bert Van Brande]

I had to do this myself when I rebuild the OD,  I had intermittent oil
pressure and this got me stumped at first.  The procedure is to use a a long
punch and give the
(new) ball in the check valve (pump valve, non-return
valve) a gentle whack.  The aluminum of the OD housing is soft and will
conform to the ball.  I tossed the ball (they're cheap) and installed a new
one without scars or scratches as I did not have a copper drift (not cheap). 
Results were consistent oil pressure and engagement of OD.


Check page 7 of
the manual here:
http://www.tonydrews.com/Overdrive/A-type%20OD%20manual.pdf

Bert
________________________________
 From: Willig <willig at wtnet.de>
To: 'David
Nock British Car Specialists' <healeydoc at sbcglobal.net>;
healeymanjim at hansencc.net 
Cc: healeys at autox.team.net 
Sent: Friday, August
30, 2013 11:48 AM
Subject: Re: [Healeys] o/d problem
 

David,

I have the
same problem with my OD. A new ball cured the problem when the
OD-oil is cold.
The hotter the oil gets, the slower the OD is to engage. How
do I re-cut the
seat?

Regards


Thomas Willig