overdrive isolator switch?

[jagojules]

My stag has a straight six 2500s engine and box. My overdrive hasn't worked since changing the engine, so I decided to have a look ..
no power to solenoid , but when powered it does click.
power to switch and out of it.
so decided the problem must be the isolator , however the switch on the side is for the reversing lamps , and I cant find another switch.
So saying the switch is big and may have had 4 terminals (yet to remove it)
Can anyone tell me if any cars were fitted with a dual switch ?
or where is the other one?
When I removed the lead from the gear lever feed it had a broken terminal stuck in the end {under the car).
The overdrive solenoid is fitted to the n/s of the box - is that a type A ?
Ideas please !!

[jleyton]

If you go to: http://www.buckeyetriumphs.org/technical/technical.htm it will tell you all you'll ever need to know about both A type and J type overdrives.

Cheers

Julan

[jagojules]

Superstar!!
Just had a quick look and can see the isolator is on top of the gear change extension.
Thanks for the info, can get it working now,
Jules

[malc4d]

Whats the best way to get to the top switch. Is it through the rubber grommet under the centre consul ?

[jagojules]

Whats the best way to get to the top switch. Is it through the rubber grommet under the centre consul ?

I will let you know when the new switch arrives.

[malc4d]

Cool. I got heavy with cleaning the oil off the gearbox for MoT and seemed to have knocked a wire off. No Od at mo.

[tjk]

hI
I think you have to lower the back of the gearbox abit to get to switch, don't believe you can get to it by the grommet.

Sorry

Tim

[jleyton]

Whats the best way to get to the top switch. Is it through the rubber grommet under the centre consul ?

Unfortunately it's virtually impossible to access it via that hole. I have seen cars where another hole, to the right of that one has been cut to access the switch.

However, if it's only a wire off you can, just, get to it from underneath the car with the vehicle up on a lift, if you've got small dextrous hands.

Cheers

Julian

[malc4d]

Damm.. thanks all. So what is that big bung for ??

[jleyton]

IIRC It's for a workshop pressure gauge or somesuch for doing tests on an autobox.

Cheers

Julian

[jagojules]

My switch was fitted last night, the access hole in the tunnel has been modified on mine to a square hole the width of the console and about 2.5 inches front to rear. Has a large plate screwed over it, so changing switch was easy. So saying I did tweak the terminals on the new one to the horizontal so to give more clearance .
Glad to report the overdrive now works perfectly - nice smooth change up and down the box.
Sadly on the way to a show tonight the gremlins struck and the car started to misfire , got worse so stopped and changed the condenser - no improvement.
came home on a friends trailer.
I believe the coil is the cause - it has a nice shiny cover around it- when I took the coil off it was nearly to hot to hold . will fit new coil without shiny cover and hopefully it will dissipate more heat and behave itself.
Next task after that is to adjust and bleed rear brakes , long pedal - mainly I believe due to rear brakes being adjusted by tightening the handbrake cable.
Hopefully will be done by Sunday as due to go on a heritage drive out organised by the Delacy motor club (paid for by a pal whose 1800es I have just got running - Last used in 1987).
Will update after Sunday.
Jagojules

[Mike Stevens]

When you adjust the rear brakes, remember to disconnect the handbrake cable to let the adjusters 'click up'. Then re-attach the cable, adjusting the length as necessary.

Cheers,
Mike.