Removal of Engine in 2011 F20 2.0L N47 Engine

Terry0000000000 · 07-09-2022, 05:55 AM

I have the N47D20C (GS6-45DZ) 2.0L 85KW 115bhp engine in my 1 series. I need to replace the timing chains which unfortunately means removing the engine.
I've looked through all the instructions in the Service Workshop System and one of the final steps for removing the engine says to "release A/C compressor and place to one side." This then links to instructions for "Replacing air conditioning compressor (N47)" which I would not be able to do as I have no access or qualifications to deal with the air con.
My question is, is it just a case of undoing the two screws holding the compressor to the engine block and then the engine will come away leaving the compressor and air con system completely intact behind such that it does not need to be drawn off and recharged?
Any help much appreciated.

IJO · 07-09-2022, 08:36 AM

If the car is still driveable, take it to a nearby A/C specialist and have them suck out the refrigerant.

Make sure the A/C stays off until you have had it regassed.

Terry0000000000 · 07-09-2022, 12:03 PM

Yes, that's certainly an option if I do need to draw out the system, and thanks for the reply. I'm kinda hoping I don't have to though. I've seen a youtube video of an N47 in a 3 series and that had the compressor pulled aside without having to de-gas the air con. I'm really hoping it's the same for mine because when I get to that point in the engine removal it won't be drivable.

IJO · 07-09-2022, 01:01 PM

Quote:

Originally Posted by Terry0000000000

Yes, that's certainly an option if I do need to draw out the system, and thanks for the reply. I'm kinda hoping I don't have to though. I've seen a youtube video of an N47 in a 3 series and that had the compressor pulled aside without having to de-gas the air con. I'm really hoping it's the same for mine because when I get to that point in the engine removal it won't be drivable.

Worst case is that the gas might have to leak out......

Then have it regassed when the engine has been swapped.

Terry0000000000 · 07-10-2022, 05:44 AM

Yes, think you're right. Because the instructions say "Release" and not "Remove" I think I shouldn't have to degas the system. Hopefully no gas will escape if I'm careful.

07-09-2022, 05:55 AM	#1
Terry0000000000 Registered 0 Rep 3 Posts Drives: BMW 1 Series F20 116d 2.0L Join Date: Jul 2022 Location: Wiltshire iTrader: (0)	Removal of Engine in 2011 F20 2.0L N47 Engine I have the N47D20C (GS6-45DZ) 2.0L 85KW 115bhp engine in my 1 series. I need to replace the timing chains which unfortunately means removing the engine. I've looked through all the instructions in the Service Workshop System and one of the final steps for removing the engine says to "release A/C compressor and place to one side." This then links to instructions for "Replacing air conditioning compressor (N47)" which I would not be able to do as I have no access or qualifications to deal with the air con. My question is, is it just a case of undoing the two screws holding the compressor to the engine block and then the engine will come away leaving the compressor and air con system completely intact behind such that it does not need to be drawn off and recharged? Any help much appreciated.
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07-09-2022, 08:36 AM	#2
IJO Second Lieutenant 22 Rep 221 Posts Drives: BMW 116I F20 Join Date: Apr 2022 Location: UK iTrader: (0)	If the car is still driveable, take it to a nearby A/C specialist and have them suck out the refrigerant. Make sure the A/C stays off until you have had it regassed.
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07-09-2022, 12:03 PM	#3
Terry0000000000 Registered 0 Rep 3 Posts Drives: BMW 1 Series F20 116d 2.0L Join Date: Jul 2022 Location: Wiltshire iTrader: (0)	Yes, that's certainly an option if I do need to draw out the system, and thanks for the reply. I'm kinda hoping I don't have to though. I've seen a youtube video of an N47 in a 3 series and that had the compressor pulled aside without having to de-gas the air con. I'm really hoping it's the same for mine because when I get to that point in the engine removal it won't be drivable.
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07-10-2022, 05:44 AM	#5
Terry0000000000 Registered 0 Rep 3 Posts Drives: BMW 1 Series F20 116d 2.0L Join Date: Jul 2022 Location: Wiltshire iTrader: (0)	Yes, think you're right. Because the instructions say "Release" and not "Remove" I think I shouldn't have to degas the system. Hopefully no gas will escape if I'm careful.
	Appreciate 0 Quote