[Healeys] overdrive problem

john harper ah100tech at gmail.com
Tue May 11 03:02:02 MDT 2021

Maybe there is too much clearance between the bottom of the solenoid
plunger and the 'backstop'. There are two versions of this backstop. A
small rubber bung and an adjustable back screw. If it were rubber, it will
perish and fall away or the adjustment not correct.

Don't leave the plunger out too long. As you say  *'if I push a little on
right side arm it*
*engages** immediately'* means that the high current is still flowing and
if left any length of time will burn out the solenoid.

On Tue, 11 May 2021 at 04:09, healeymanjim <healeymanjim at hansencc.net>

> changed a leaking gasket on side of BT7 o/d.  also replaced synthetic oil
> with 30ND.  now cannot get o/d to engage.
> solenoid worked fine on static check but would not engage o/d while
> driving.  ordered new solenoid and same situation.
> started out with book instructions, no luck.  tried other positions and
> will not engage.  if i push a little on right side arm it
> engages immedietely.  again, it was working fine before we changed the
> gasket on the side plate and replaced o rings on
> both sides of shaft.  one thing i did notice was that o-ring on pax side
> was flat and replacement was round.  the solenoid
> does not seem to be able to lift the arm while moving, but will when
> checking it while stopped. any ideas?
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