C'mon folks help me out here. I need to tear apart a couple of OD'd
tomorrow.
Mike
-------- Original Message --------
Subject: Re: J O.D.
Date: Wed, 03 May 2000 22:07:03 -0600
From: Mike Ginter <mginter@concentric.net>
To: "John J. Black" <transmancat@bbnow.net>,Spit list
<spitfires@autox.team.net>
References: <NEBBJLIBKLGHDKOPDHIIIEKBCFAA.transmancat@bbnow.net>
Thanks John, I appreciate the response very much. From the diagrams
I've seen, I think your referring to a D type OD. Mine is a J type and
the only check ball that requires "seating" is the non return valve
which is similar to what you describe but in the J type it is one of the
bottom orifices not on the top as is the case with the D type. Anyway,
what is the importance of seating the check ball in the valve plate? I
did service all of the orifice o-rings and filters, but when I put the
non return valve back in I could not get the check ball to stay in the
spherical hole in the valve plate. Does it have to "stick and stay" in
the plate? It would appear that the spherical hole in the plate is too
large or the check ball is too small.
"John J. Black" wrote:
>
> Hi Mike
> At the rear of the OD on the top right hand side you will find a brass plug,
> remove this plug and it will give you access to the operating valve, remove
> it and the ball bearing, after cleaning both of them and the hole that they
> go into they should be reseated. This is done by replacing them both in the
> hole and giving them a GENTLE tap with a hammer and punch, this will reseat
> the ball.
> That is my best suggestion with the information that you have given us.
> Regards
> John J Black
> Waterloo Drivetrain Systems
> www.waterloo-dtr.com
>
> -----Original Message-----
> From: owner-spitfires@autox.team.net
> [mailto:owner-spitfires@autox.team.net]On Behalf Of Mike Ginter
> Sent: Tuesday, May 02, 2000 10:01 PM
> To: Spit list
> Subject: J O.D.
>
> Here's another one.
>
> My OD works fine when the gearbox is cold. It will continue to work
> even after the gearbox heats up provided it is not disengaged when hot.
> The first time it is disengaged when hot, it will not re-engage. When
> the gearbox is hot and the OD is turned on, it will engage with no
> load. As soon as the throttle is applied under this condition, the OD
> slips out again. When I let up on the throttle (no load) it will
> re-engage and so on and so on...
>
> After I replaced the clutch, I refilled the gearbox with 30w motor oil
> (my 79 has had 30w in it for 5 years and operates flawlessly). I
> services the OD filter and replaced all the o-rings I could get to
> without removing the unit. I even swapped out a solenoid. Same
> results. This morning I drained the 30w and replaced it with 85w140.
> It does the same thing, but it operates a little longer than it did
> before, and now after only cooling down for a couple of hours it will
> operate normally until of course, the gearbox heats up again. It is a
> tiny bit better though.
>
> I have two theories (BTW - The day after I bought this car last October
> it began this behavior and has been this way ever since.)
>
> 1) Someone at some point put synthetic fluid (fluif? Joe you
> listening?) in the gearbox and maybe after enough gear oil changes I
> can finally get it flushed out and it will behave normally all the time
> (wishful thinking I know).
>
> 2) This appears to me to be a fluid/pressure issue. Could it be the OD
> clutch linings? What are the odds on one or the other?
>
> Any opinions/brainstorming are welcome.
>
> Mike
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