Removing 1st gear from mainshaft of OD Spit?

#11

Quote:

Sounds like you want a BL workshop manual - essential for working on any
car like this. They give full overhaul procedures for everything unlike
the Haynes 'take it to your dealer' crap.

Generally, you have to remove the layshaft first so the laygear drops to
the bottom of the housing. After removing circlips etc you drift the third
motion shaft forwards which pushes out the first motion shaft. When that's
out, collect any bearing between the two and remove the third motion
shaft. There's often some form of plungers to restrict first gear forward
motion on the third motion shaft (non synchro type) - after that is off
the others come free.

Dunno what you mean by a chuck key. Most common type of removable drive is
a Woodruff key. This is may be drifted out.

I do have both the Haynes & Bentley manual, but, well, I wanted to be
sure of things for a replacement mainshaft is not cheap.

#12

Quote:

OTOH The Haynes Spitfire is excellent and gives full details of all 3
gearboxes and complete rebuilding instructions, down to the "machining
needed" level. I presume (from the poster's email) that this is the
last box, the all-synchro single-rail as fitted to the 1500.

Ah - right. Of course earlier Haynes were a bit better. But all the ones
I've ever owned have that magic phrase somewhere. ;-)

The transmission(OD aside) is fully apart. That was easier than I
thought. Oh well. Better to ask on USENET than break anything. Thanks.

This clean-up work on the parts is going to take forever.

#13

Hi,
Just overhauled my Spitfire 1500 overdrive box and took photos of each stage
of the operation. If its any use I could email you copies of photos and
explanations.
At face value from what you are indicating, once you have removed the speedo
cam, spring clip and woodruff key, the main bearing / thrust washer etc,
should slide off, followed by first gear.
Slightly puzzled as to your problem?
Could you start again with a clearer explanation of the problem - using
Haynes should help descriptions?

Regards,
Tom

"S1500" <s1500 (AT) comcast (DOT) net.nospam> wrote

Quote:

Wow, my tranny rebuild has come off to a hellish start.

There's no way in hell I've been able to just tilt & ease out the
mainshaft and I'm done. Nope, things got in the way. No clearance.

So, with that in mind, how do you get the 1st gear off the mainshaft? It
slides a bit as it should, but it stops when you get to the mainshaft
part where splines start up again. Yet, the diameter of the splines
seems to be similar to what it's riding on right now.

Ugh, this is hell.

And I can't remove things the other way due to the chuck key thing that
drives the overdrive cam.

#14

Tom Sharrocks wrote:

Quote:

Hi,
Just overhauled my Spitfire 1500 overdrive box and took photos of each stage
of the operation. If its any use I could email you copies of photos and
explanations.
At face value from what you are indicating, once you have removed the speedo
cam, spring clip and woodruff key, the main bearing / thrust washer etc,
should slide off, followed by first gear.
Slightly puzzled as to your problem?
Could you start again with a clearer explanation of the problem - using
Haynes should help descriptions?

The problem was between the user & keyboard(myself). I didn't know you
could drift out the chuck(for the OD cam pump thing), and now the whole
transmission is dismantled. I still have a few things left on the OD,
but I have a game plan.

Yes, I am interested in seeing your photos. I'm still snapping away
at photos of my dismantling process for notes on reassembly.
s1500 (AT) comcast (DOT) net

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Removing 1st gear from mainshaft of OD Spit?

Classic Cars (UK) Classic Cars in the UK (uk.rec.cars.classic)

Re: Removing 1st gear from mainshaft of OD Spit? - 12-08-2006 , 09:41 PM

Re: Removing 1st gear from mainshaft of OD Spit? - update - 12-09-2006 , 01:01 AM

Re: Removing 1st gear from mainshaft of OD Spit? - 12-10-2006 , 06:33 PM

Re: Removing 1st gear from mainshaft of OD Spit? - 12-11-2006 , 12:05 AM