Diff locker switch question

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Diff locker switch question

Postby Basilsalty » 17 Apr 2015, 18:31

Hi all
I'm a bit of a newbie at this and am just starting to take a screwdriver and have a poke around. I've just taken the cover off the diff locker switches and one has a black plastic collar attached to a spring. I can't fathom what this is for, can anyone shed some light?

https://www.flickr.com/photos/131920453@N08/

Also whilst poking around I noticed that the hoses to the heater box are clamped, I am aiming to take the dash out in due course and replace the fan or matrix or both but can anyone hazard a guess as to why it is already clamped? Or are there so many reasons it's impossible to tell without dismantling? It does blow hot air onto me constantly once the engine warms up...great in winter less good in the near tropical English summer I am anticipating.
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Re: Diff locker switch question

Postby tforturton » 17 Apr 2015, 18:48

When you switch on that diff (the front one) you have to turn the knob to do it, because you only want that diff on in extreme conditions (it makes it hard to steer anything more than a straight line). The need to twist it means you can't really switch it on accidentally. The spring returns the switch to it's original position when you let go.
Last edited by tforturton on 17 Apr 2015, 18:51, edited 1 time in total.
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Re: Diff locker switch question

Postby lloydy » 17 Apr 2015, 18:51

It's because the front diff lock knob needs a 1/4 turn to be able to pull out. And that's the spring return for it. Look on the cover you have just removed and you will see a cut out/slot that will allow you to pull the knob out when it's turned.
As for the heater, if it's clamped then no heat should be able to get to it.
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Re: Diff locker switch question

Postby Basilsalty » 18 Apr 2015, 08:51

Thanks for the replies guys. I was looking for images of the locker switches and couldn't find a matching one though the cut out on the cover is clearly not a modification. As to the heater all I know is my knees are always very toasty, I'll post up what I discover when I take the dash off.
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Re: Diff locker switch question

Postby silverbullet » 18 Apr 2015, 09:04

I guess you are referring to the water hoses? Heater valve is possibly shot or the end of the valve control cable has dropped off (or the lever on the valve)
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Re: Diff locker switch question

Postby Basilsalty » 18 Apr 2015, 11:07

Yup the water hoses are clamped but still attached to the heater box

https://flic.kr/p/rUg9bX

The blower is not working but I've not looked into the electrics/fuses yet.
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Re: Diff locker switch question

Postby silverbullet » 18 Apr 2015, 17:40

Motor probably ovetheated and siezed. Lots of fun to remove, its a rite of passage.
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Re: Diff locker switch question

Postby BeakerFlo » 24 Dec 2017, 23:17

For future reference...
This is how the safe-guard looks like and should be.

IMG_1683.JPG
IMG_1683.JPG (118.73 KiB) Viewed 1262 times
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