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Patrol Diffloc and potential to ruin your week.

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Patrol Diffloc and potential to ruin your week.

Postby biggles » 18 Jun 2017 11:21

I was chatting to my dad and he mentioned a story where an engine was destroyed due to a vaccuum operated difflock.

So one of the diffloc vaccuum lines had a break in it. So the whole time it was sucking air into the manifold. Not a major issue until the car started doing some wading. The engine proceeded to fill up with water until it died.

So be aware and check those lines!! If your diffloc is not working check or blank off the lines.
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Re: Patrol Diffloc and potential to ruin your week.

Postby Peter Connan » 18 Jun 2017 15:46

Did he witness this first-hand?

I find it hard to belive that enough water to make a difference can get through the small holes in the solenoid.
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Re: Patrol Diffloc and potential to ruin your week.

Postby biggles » 18 Jun 2017 16:42

It was not a patrol. It was one of his work mates cars... battling to remember the make now. Pretty sure it was a defender.
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Re: Patrol Diffloc and potential to ruin your week.

Postby Michael » 19 Jun 2017 11:28

Dies the 4.8 and 4.5 draw vacuum from the inlet manifold or from a vacuum pump like the diesel's?
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Re: Patrol Diffloc and potential to ruin your week.

Postby Wilkie » 19 Jun 2017 12:10

Michael wrote:Dies the 4.8 and 4.5 draw vacuum from the inlet manifold or from a vacuum pump like the diesel's?


Petrol engine trek van manifold af en dan deur sy selanoids na difflocks toe en hy gaan baie lank moet suig om daai tanks vol te kty en dan manifolds toe :think: :think:
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Re: Patrol Diffloc and potential to ruin your week.

Postby Peter Connan » 19 Jun 2017 14:59

biggles wrote:It was not a patrol. It was one of his work mates cars... battling to remember the make now. Pretty sure it was a defender.


Would be nice if you could find out for us. Defenders don't have diff locks (apart from the centre diff) as standard.
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Re: Patrol Diffloc and potential to ruin your week.

Postby Dustin » 20 Jun 2017 08:06

Let's look at facts here.
Land Rover Defenders break for no apparent reason, even if the wind changes direction :lol:
I should know because I had one before I realized the error of my ways and bought a proper 4x4.

Peter is correct in saying that they don't come standard with rear diff locks.
I also find it highly unlikely that such a marginal amount of water sucked through the vacuum line would be enough to kill an engine, unless it was spending a prolonged time submerged under water.

I agree with Biggles that it's not a bad idea to keep checking the vacuum lines from time to time.
I generally check mine at every 2nd service.
I have a vacuum leak before and it was not a fun experience, especially because I was in the sticks and needed the diff lock to get me out of the trouble and back home.
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