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      11-18-2014, 04:36 AM   #1
Sparky68
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Alternator swap out advice

Had a strange noise coming from the engine bay last week which turned out to be the alternator bearing.

Sourced a new alternator and a new belt ready for install.

Space is at a premium on the 335i [ as you can imagine] so any tips for completing the job.
Looks like the easiest way would be to remove the radiator shroud and front turbo inlet pipe ?

Anyone had a go at this before ?
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      11-18-2014, 09:45 AM   #2
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Might just be the pulley. Regardless - this may help.

http://workshop-manuals.com/bmw/3_se...r_belt_pulley/


http://workshop-manuals.com/bmw/3_se...ernator_(n54)/
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      11-18-2014, 10:26 AM   #3
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Quote:
Originally Posted by tmarshall57 View Post
Might just be the pulley.
+1. I'd check the clutch pulley before suspecting the internal bearings...
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      11-19-2014, 03:01 AM   #4
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Pulley from the front of the alternator can be moved about like a loose tooth and smoke was coming from the alternator where it was falling apart internally.

There is very little room to even remove the air duct let alone get to the rest, pig of a job this is going to be!

Thanks for the info guys.
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      11-22-2014, 12:22 PM   #5
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AC compressor pulley is kaput, fell off when we took the belt off.

This is going to be expensive!
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      11-22-2014, 06:10 PM   #6
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If anyone knows of a auto 335i being broken, please let me know.
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      11-24-2014, 10:15 AM   #7
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Can you damage a aircon compressor if its run without gas. Talking about a 2 mile trip to local Halfrauds.

old grey steve
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      11-24-2014, 10:34 AM   #8
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The compressor wont run without freon.
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      11-24-2014, 10:54 AM   #9
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So running it is a no no then WilliamS
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      11-24-2014, 11:48 AM   #10
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the AC cannot work without gas in the system, it needs the gas to enable the pressure sensor to activate the ac clutch in turn driving the pump, so it ok to drive without gas.
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      11-24-2014, 12:49 PM   #11
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Ah so as long as i dont try to run the AC i can drive a couple of miles to get regassed.
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      11-24-2014, 12:50 PM   #12
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Right, you cant run it, it simply wont do it. Even on low temp and ac on max it will never turn.
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      11-24-2014, 02:03 PM   #13
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So I can run the car ok as long as I dont use AC. Need to get it into MK aircon clinic for a regas.

Oh and for anyone who wants to know about the air con compressor, BMW have 1 in the entire UK and it costs 1200 supply only !!!
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      Today, 02:25 PM   #14
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Sorry PM'd you car can be driven as stated AC as others have stated without gas will not work, you're ok to drive car with AC switched off from the panel Sparky.

Re 1200 fur AC compressor, that'll be an exchange part, you could do a GSF Alternative just seems a hella of a lot for that component
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      Today, 02:39 PM   #15
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Got it mate, cheers.
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