[Healeys] Clutch plate
bspidell at comcast.net
Sun Nov 7 09:34:57 MST 2021
re: "the clutch plate would have to be stuck [to the] transmission shaft"
The most plausible explanation yet. Sitting for years, esp. in a damp
climate, the splines could very well 'rust-weld' together given their
small clearance. I don't know if it's common practice, but I always put
some tenacious grease, usually wheel bearing grease, on those splines
(thin coat only).
On 11/7/2021 7:59 AM, Harold Manifold via Healeys wrote:
> I would sort out the hydraulics first and then if it still doesn’t
> move the clutch pressure plate mechanism may be seized. The clutch
> plate would have to be stuck to both the pressure plate and the
> flywheel and or the transmission shaft to prevent movement.
> *From: *Simon Lachlan via Healeys <mailto:healeys at autox.team.net>
> *Sent: *Sunday, November 7, 2021 1:43 AM
> *Cc: *Healeys <mailto:healeys at autox.team.net>
> *Subject: *Re: [Healeys] Clutch plate
> After/during a protracted battle with my clutch, I can confirm that it
> takes a lot of effort to move the fork by hand. A LOT. I used a lever
> and got virtually nowhere, but then, it seems, I’d been sold the wrong
> clutch cover.
> What did impress me was the comparison between how hard/impossible it
> was to move by hand and how easy it was to get it to move with the
> pedal once the hydraulics were 100%.
> Certainly, I’d want to convince myself that the hydraulics were 100%
> before assuming that the disk was stuck.
> *From:* Healeys <healeys-bounces at autox.team.net> *On Behalf Of *Bob
> Spidell via Healeys
> *Sent:* 07 November 2021 03:56
> *To:* healeys at autox.team.net
> *Subject:* Re: [Healeys] Clutch plate
> re: "Would this happen if the clutch disc was stuck to the flywheel?"
> I think if it was just the clutch disk stuck to flywheel you'd still
> get at least some movement of the pedal. Early cars used coil springs
> in the cover plate to hold the disk firm to the flywheel, and later
> cars used diaphragm 'springs.' I think with either you'd at least be
> able to move the pedal until the springs reached their limit of travel
> (or you left leg reached its limit of strength).
> It's a long shot SWAG, but since the car has sat for a long time it's
> conceivable the fluid in the line has gelled and/or crystallized to
> the point it prevents flow to the slave cylinder (I have had BF gell
> up). I'm not sure you can move the release bearing fork much by hand,
> though I haven't tried; those are some strong springs in the cover plate.
> On 11/6/2021 7:52 PM, Don via Healeys wrote:
> Sorry I didn’t finish my story about the fixes I’ve done so far .
> When I first got the car and I tried to push the clutch pedal it
> wouldn’t move. After removing the carbs , which I’m going to
> rebuild I was able to access the clutch master cylinder. After
> removing the lines to the master cylinder i was able to push the
> pedal to the floor . I’m replacing the lines to both the clutch
> and brake master cylinder. I’m replacing both master cylinders .
> I’m replacing the hydraulic fluid tank as it leaks. When I got
> under the car and looked at the clutch slave cylinder, which I’m
> replacing I can’t move the clutch fork. I can’t budge it , I can’t
> move the piston rod . I’m going to finish rebuilding, replacing
> everything in both the clutch and brake hydraulics system. I’m
> just Puzzled as to why won’t move . Would this happen if the
> clutch disc was stuck to the flywheel? I may answer my own
> question the farther I get into the rebuild. I don’t want to need
> to replace the clutch.
> Sent from my iPhone
> On Nov 6, 2021, at 10:08 PM, gradea1 at charter.net wrote:
> Twelve years could have built up some "goo" in the clutch
> master cylinder and prevent it from moving the piston. As
> Perry says, could also be the same issue in the slave.
> However, the clutch is hydraulic and the pedal does not move
> any mechanics (other than the piston rod) so it can't be
> mechanically hung up. The clutch disc is another issue which
> may show up later, and I would wonder if the brakes are
> functioning? Moisture really plays havoc with hydraulics
> especially if the car is not in a conditioned space.
> This is a good time to change all the fluid, replace hoses,
> rebuild or replace cylinders-fun stuff. Hank
> From: "Perry Small via Healeys"
> To: "Don Day"
> Cc: "healey list"
> Sent: Saturday November 6 2021 6:48:37PM
> Subject: Re: [Healeys] Clutch plate
> Maybe the slave cylinder is locked up. Pull the pin at the
> slave and see if the clutch pedal will move.
> Sent from my iPhone
> > On Nov 6, 2021, at 7:36 PM, Don Day via Healeys
> <healeys at autox.team.net> <mailto:healeys at autox.team.net> wrote:
> > Hi List
> > If a 65 1/2 BJ8Healey has been sitting for over 12 years ,
> Allegedly in a garage and I’m thinking the clutch plate could
> be stuck to the flywheel, can’t push clutch pedal in , can it
> be freed up .
> > Thanks Don
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