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XC70 haldex 5 demand pump

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Old May 23rd, 2020, 10:14   #1
Msmith2566
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Default XC70 haldex 5 demand pump

Hi,

I need to change the demand pump on the haldex 5 unit on my 64 plate XC70.

Has anyone done this and can tell me how much AOC oil is required to refill the unit after the pump as been replaced?

I have a litre of the oil but don't want to buy more if I don't need it as it only has a 2 year shelf life.

The volvo tech manual does not state the amount.

Cheers
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Old May 23rd, 2020, 12:04   #2
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Quote:
Originally Posted by Msmith2566 View Post
Hi,

I need to change the demand pump on the haldex 5 unit on my 64 plate XC70.

Has anyone done this and can tell me how much AOC oil is required to refill the unit after the pump as been replaced?

I have a litre of the oil but don't want to buy more if I don't need it as it only has a 2 year shelf life.

The volvo tech manual does not state the amount.

Cheers
Although there is no mention of quantity in this video..

https://m.youtube.com/watchv=r4mb-e-3r7m

...the contributor shows what he drained out at the end and doesn't appear to be more than a litre there.

When you refer to the oils shelf life of 2 years, is this because it is hydroscopic?
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Old May 23rd, 2020, 16:19   #3
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I can’t remember exactly, but you will be fine with 1L and will have some spare. Run the haldex pump air ‘purge’ function in Vida afterwards.
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Old May 23rd, 2020, 18:16   #4
Msmith2566
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Thanks for the replies and the video link.

I'm guessing it is hydroscopic, the container is date stamped and states it only has a 2 year shelf life from that date.

I've looked through Vida so I will purge it after then top up, cheers.
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Old May 24th, 2020, 09:37   #5
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...the container is date stamped and states it only has a 2 year shelf life from that date.
As

Interesting that the oil has a shelf life of 2 yrs.

What's the service period for the oil change?

I wonder how many cars fitted with Haldex 5 are floating around with oil past its shelf life never mind the service period.

My own car had a new pump at around 48k miles. It was under warranty. It's highly likely that oil past its shelf life was contributory to the failure.
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Old May 24th, 2020, 09:47   #6
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How much moisture can there be in the air space above the oil in a sealed container? The manufacturer could ensure minimum humidity when bottling the oil and so I doubt that the shelf life date is due to the hygroscopic nature of the oil. It's my experience that shelf lives are often there to guarantee reordering and provide a liability loophole. Does oil in the Haldex unit get completely changed every two years?
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Old May 25th, 2020, 23:33   #7
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There's no oil change in the service papers. I do it anyway, both on our Haldex 4 and Haldex 5 cars.
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