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Old 05-25-2018, 12:57 PM
Semerka Semerka is offline
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Having trouble removing the alternator, ASAP...

Hi guys. My 2007 X5 4.8i is our winter vehicle. So I am fixing it these days. I got an oil leak through oil thermostat gasket, so I am trying to change it. The procedure requires removing the alternator. Upon removal of all things like braces, wires, bolts etc. I have the alternator ready to go. But it won't... It moved about 12 mm (looking at the Top bolt hole I can see most of it). But it took too much effort and a pry bar to get there. I never heard anyone on Youtube mentioning this problem (hard to remove / install alternator once it is unbolted). Does anyone know?

Last edited by Semerka; 05-25-2018 at 12:59 PM.
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Old 05-25-2018, 01:02 PM
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Removing alternator. Www.NewTIS.info

newTIS.infobeta
Home / BMW E70 X5 4.8i SAV / Repair Manuals and Technical Data / 12 Engine electrical system / 12 31 Alternator with Drive and Mounting Parts / 12 31 020
Removing and installing or replacing alternator (N62)

https://www.newtis.info/tisv2/a/en/e...-parts/GUMKp5R
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Old 05-25-2018, 01:27 PM
Semerka Semerka is offline
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Thank you Doug. I haven't removed the passive tensioner, nor the refrigerant line holder yet. The thing is that the alternator doesn't drop off. Not that I don't have any room to pull it out, but it is just like stuck on the engine.
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Old 05-28-2018, 03:31 PM
Semerka Semerka is offline
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Originally Posted by Doug Huffman View Post
newTIS.infobeta
Home / BMW E70 X5 4.8i SAV / Repair Manuals and Technical Data / 12 Engine electrical system / 12 31 Alternator with Drive and Mounting Parts / 12 31 020
Removing and installing or replacing alternator (N62)

https://www.newtis.info/tisv2/a/en/e...-parts/GUMKp5R
Doug,

Thank you and others for helping me out with alternator the other day. I removed it, now the thermostat gasket thing... I am too new to the 'fest, so I can't figure out how to find here one probably simple answer to my very simple question: were is the camshaft position sensor is (are) for N62 BMW x5 4.8i E70 engine? One thing if you can advise how to search the database, and the other - if you have an answer to my technical question.
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Old 05-28-2018, 04:57 PM
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Doug,

Thank you and others for helping me out with alternator the other day. I removed it, now the thermostat gasket thing... I am too new to the 'fest, so I can't figure out how to find here one probably simple answer to my very simple question: were is the camshaft position sensor is (are) for N62 BMW x5 4.8i E70 engine? One thing if you can advise how to search the database, and the other - if you have an answer to my technical question.
Camshaft sensors (2 each bank, exhaust and intake) are under the valve cover towards the end near cylinder 4 and 8. Their connectors go through the valve cover.

Doug may extend my answer here for the search, but here is my method:

Start from here: https://www.newtis.info/tisv2/a/en/e70-x5-4.8i-sav/
I either walk though the categories or I use the search function on the right. Get's better once you gain experience there.
My other source is http://www.realoem.com where I search for the part number. Then I put this part number in google and search for images.

Example for the cps sensors:

search on NewTis https://www.newtis.info/tisv2/a/en/e...amshaft+sensor
here I click on "Wiring Diagram (SSP) Intake camshaft" Wiring Diagram (SSP) Intake camshaft
On the wiring diagram I click on the blue label of the part: B62241 NewTis link for B62241 and this brings me to related links. First one is "Installation location" Installation location B62241


As for how the part looks like (realoem became very slow recently): Realoem
search for camshaft: Camshaft

then put it in google and search for images: Google search for cps
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Old 05-25-2018, 01:40 PM
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Did ya whack it gently - apply mechanical hysteresis - to break corrosion alternator frame to engine block?
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Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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Old 05-25-2018, 01:48 PM
Semerka Semerka is offline
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Yes I did wack it with a 16 oz. hammer through a 2 x 2 piece of wood. I don't see any corrosion marks on the engine though. Of course the corrosion may be on the alternator mounting fork itself.

Last edited by Semerka; 05-25-2018 at 01:51 PM.
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  #8  
Old 05-25-2018, 01:52 PM
ArgentoCarNut ArgentoCarNut is offline
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Bigger hammer?


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Old 05-25-2018, 01:55 PM
Semerka Semerka is offline
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I am a bit scared, but of course have considered that. Have you had this problem and applied this solution?
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Old 05-25-2018, 02:34 PM
ArgentoCarNut ArgentoCarNut is offline
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I am a bit scared, but of course have considered that. Have you had this problem and applied this solution?


Same issue. Different BMW (and Iíll admit, a couple too many brewskis).


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Old 05-25-2018, 02:05 PM
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Only when I was sure that that was the only impediment to the piece coming loose.

More gentle that a whack is an overnight soak in Coca-Cola dilute phosphoric acid (Coca-Cola Merchandise No. 4) solution - 2 pH. Soak a rag in coke and wrap it where it will do the most good.
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Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.

Last edited by Doug Huffman; 05-25-2018 at 02:09 PM.
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Old 05-25-2018, 02:30 PM
Semerka Semerka is offline
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Thanks, Doug. I don't think it is possible to wrap a soaked rag, but I will try. I believe that vinegar has the same acidity as Coca Cola, so I may as well use it?
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Old 05-25-2018, 02:33 PM
ArgentoCarNut ArgentoCarNut is offline
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Originally Posted by Semerka View Post
Thanks, Doug. I don't think it is possible to wrap a soaked rag, but I will try. I believe that vinegar has the same acidity as Coca Cola, so I may as well use it?


If located in US, try this




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Old 05-25-2018, 02:42 PM
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Thanks, Doug. I don't think it is possible to wrap a soaked rag, but I will try. I believe that vinegar has the same acidity as Coca Cola, so I may as well use it?
Absolutely. 1 M acetic acid is 2.4 pH. 1 M is about the concentration of household vinegar.
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Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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Old 05-25-2018, 02:47 PM
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Old 05-25-2018, 02:21 PM
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Can you post a pic of your alternator as it sits now?
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Old 05-25-2018, 02:52 PM
Semerka Semerka is offline
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Can you post a pic of your alternator as it sits now?
Sure. Just don't have a heart attack seeing it. The oil is leaking like crazy
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Old 05-26-2018, 12:54 PM
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Sure. Just don't have a heart attack seeing it. The oil is leaking like crazy
LOL Yeah thats kinda nasty . Hope you get it out.
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Old 05-25-2018, 03:03 PM
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I don't see any corrosion. It looks to me like it's cocked on the very tight parallel surfaces. I think judicious tapping and wriggling to get the alternator square on the mounting surfaces and it ought'a slide off.
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Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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Old 05-25-2018, 03:16 PM
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It looks to me like it's cocked on the very tight parallel surfaces.
+1, needs to get off evenly

I filed mine a bit before putting it back so it was easier. Otherwise it is even harder to put back than removing since there is no leverage point.
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Old 05-25-2018, 03:19 PM
Semerka Semerka is offline
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Thank you guys all. I really liked all the suggestions, and I think Doug ruled out the corrosion issue. I also like the Pelican suggestion where to put the pry bar to move the thing. If I can move it up than I can tap it down later, and so on. I really don't like the bushing on the back side of the alternator fork
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Old 05-25-2018, 03:22 PM
ArgentoCarNut ArgentoCarNut is offline
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Originally Posted by Doug Huffman View Post
I don't see any corrosion. It looks to me like it's cocked on the very tight parallel surfaces. I think judicious tapping and wriggling to get the alternator square on the mounting surfaces and it ought'a slide off.


This


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Old 05-25-2018, 03:42 PM
Semerka Semerka is offline
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Okay then. You guys have been a great help for me. Maybe you can suggest something on the following?

1. This infamous oil thermostat gasket. Should I use a Permatex oil-resistant silicone on a new gasket to have it done once and for all?
2. I am an engineer, but not electrical. When I get the alternator out, what is the best way to clean it without disassembly not worrying about its gut contamination?
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Old 05-27-2018, 01:58 PM
deroy deroy is online now
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Having trouble removing the alternator, ASAP...

Op are you absolutely positively sure the alternator has to come off? I think the x5 v8 has the alternator bolted to the engine block and the oil gasket thing is a completely separate part and may be better accessible from below or through the wheel well

http://www.realoem.com/bmw/enUS/show...diagId=11_3990


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Last edited by deroy; 05-27-2018 at 02:03 PM.
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Old 05-27-2018, 02:20 PM
Semerka Semerka is offline
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Op are you absolutely positively sure the alternator has to come off? I think the x5 v8 has the alternator bolted to the engine block and the oil gasket thing is a completely separate part and may be better accessible from below or through the wheel well

http://www.realoem.com/bmw/enUS/show...diagId=11_3990


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Yes, I am absolutely sure that N62 has the oil thermostat cover hidden under the alternator. All videos say that, here is one.

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4.8i, alternator, e70, gasket, leak, n62 oil leak, oil thermostat, x5


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