XC70: Electrical - Noisy air conditioning compressor - Page 2

c70man · Nov 6th, 2014, 09:07

is there anybody on here that could help please.

c70man · Nov 24th, 2014, 15:16

still no help [SIZE="7"][SIZE="7"]HELP PLEASE[

Model flyer · Nov 24th, 2014, 18:13

Hi here is a exploded view of AC compressor clutch . I have not actually stripped one of these but have stripped and replaced a clutch on a VW AC pump . From memory it looks very similar .
http://www.swedishautoparts.com/V70/...-ac-parts.html

The pulley should rotate freely on its bearing with AC off and is locked to the driven plate by an electro magnet to turn the pump shaft. Remove your AC belt to check the pulley bearing first , if it rough or noisy then replace either the bearing or pulley. The only other part of the clutch that could make a noise is s loose driven plate rattling on its shaft . This is locked on the shaft with the small bolt in the center. If its loose try tightening if it works then remove , clean and reassemble using some thread lock on the bolt. It was a few years ago that I did this but it may help. Have you had the gas pressure checked ? As a low gas and lubricant pressure could make the pump noisy .I recently thought the AC pump on my wifes Kia Rio had gone but having the gas replaced cured the noise completely. If it doesn't get really cold then its a fair bet that the gas is low . Ask a AC specialist to check it out.

blackogo · Nov 25th, 2014, 13:33

When I had this problem earlier in the year, main dealer re-gassed system and whine dissappeared. Apparently, low gas can couse whine and if ignored can damage the aircon system - they suggested I turn air con off if the whine re-appeared. Hope this helps.

c70man · Nov 27th, 2014, 09:29

Hi,
thank you for the advice,
the air con is running nice and cold no prioblem there.
its just rattling its head of. ?
The bolt is tight ?
i will try taking it of and checking it all out i was just not sure how it comes of so thank you so much for you advice.
watch this space.
steve.

Lewy · Jan 9th, 2015, 18:42

Had whining problem on mine (57 plate V70 D5) compressor replaced by local garage, still the same. Garage then brought in aircon specialist who tested gas and found moisture in it which he said causes whining. Evacuated all old gas then recharged - perfect

Specialist told me moisture in gas causing a whine is a common problem on the v70s so may be worth trying before paying out a fortune for a compressor that may not be needed.

GrantA · Jan 9th, 2015, 20:44

Quote:

Originally Posted by Lewy

Had whining problem on mine (57 plate V70 D5) compressor replaced by local garage, still the same. Garage then brought in aircon specialist who tested gas and found moisture in it which he said causes whining. Evacuated all old gas then recharged - perfect

Specialist told me moisture in gas causing a whine is a common problem on the v70s so may be worth trying before paying out a fortune for a compressor that may not be needed.

In addition to that A/C gas holds the lubricating oil used to lubricate the system in suspension i.e. the oil goes around with the gas to lubricate the innards of the compressor hence, if there is moisture in the gas as above, time to get it all sucked out and replaced with new gas (which will contain the oil).

PS. c70man if you posted your problem in the correct Section you may have had a better / quicker response than you have had on here. Although the A/C bits are probably the same this Section is for S80 '06> / V70 '07> / XC70 '07> Volvos, we are a helpful bunch but there may be others with a '53 XC70 like yours in your Section who have had similar problems.

Derkins · Mar 21st, 2015, 15:58

Quote:

Originally Posted by blackogo

When I had this problem earlier in the year, main dealer re-gassed system and whine dissappeared. Apparently, low gas can couse whine and if ignored can damage the aircon system - they suggested I turn air con off if the whine re-appeared. Hope this helps.

Seems a very common issue. Whines when running but otherwise seems OK.
I had a can of R134a with pressure gauge knocking around in my stores of car related detritus... Lifted up the scuttle at the LHS, attached the can and it was reading a little low but not void. Emptied the can and now all I can hear is the click of the clutch kicking in. Happy days!

Nov 6th, 2014, 09:07	#11
c70man Member Last Online: Apr 24th, 2024 00:09 Join Date: Sep 2014 Location: derbyshire	Still no help on this matter is there anybody on here that could help please.

Nov 24th, 2014, 15:16	#12
c70man Member Last Online: Apr 24th, 2024 00:09 Join Date: Sep 2014 Location: derbyshire	still have a problem still no help [SIZE="7"][SIZE="7"]HELP PLEASE[

Nov 24th, 2014, 18:13	#13
Model flyer Master Member Last Online: Dec 15th, 2023 18:46 Join Date: Jan 2006 Location: Kent,pothole capital of UK.	Hi here is a exploded view of AC compressor clutch . I have not actually stripped one of these but have stripped and replaced a clutch on a VW AC pump . From memory it looks very similar . http://www.swedishautoparts.com/V70/...-ac-parts.html The pulley should rotate freely on its bearing with AC off and is locked to the driven plate by an electro magnet to turn the pump shaft. Remove your AC belt to check the pulley bearing first , if it rough or noisy then replace either the bearing or pulley. The only other part of the clutch that could make a noise is s loose driven plate rattling on its shaft . This is locked on the shaft with the small bolt in the center. If its loose try tightening if it works then remove , clean and reassemble using some thread lock on the bolt. It was a few years ago that I did this but it may help. Have you had the gas pressure checked ? As a low gas and lubricant pressure could make the pump noisy .I recently thought the AC pump on my wifes Kia Rio had gone but having the gas replaced cured the noise completely. If it doesn't get really cold then its a fair bet that the gas is low . Ask a AC specialist to check it out. __________________ The secret of flight is to aim at the ground and miss ! Previous Volvos 740 GLE . V40 CD ,V70 2.4 SE LPT.V70 D5 P2. V70 D5 Se Lux P3. Current Jaguar XF Sportbrake but still like Volvos Last edited by Model flyer; Nov 24th, 2014 at 18:20.

Nov 25th, 2014, 13:33	#14
blackogo VOC Member Last Online: Feb 7th, 2021 13:45 Join Date: Aug 2007 Location: Newport	When I had this problem earlier in the year, main dealer re-gassed system and whine dissappeared. Apparently, low gas can couse whine and if ignored can damage the aircon system - they suggested I turn air con off if the whine re-appeared. Hope this helps. __________________ 2014 V70 D5 SE LUX Geartronic

Nov 27th, 2014, 09:29	#15
c70man Member Last Online: Apr 24th, 2024 00:09 Join Date: Sep 2014 Location: derbyshire	xc70 Aircon pump problem. Hi, thank you for the advice, the air con is running nice and cold no prioblem there. its just rattling its head of. ? The bolt is tight ? i will try taking it of and checking it all out i was just not sure how it comes of so thank you so much for you advice. watch this space. steve.

Jan 9th, 2015, 18:42	#16
Lewy New Member Last Online: Dec 1st, 2018 13:23 Join Date: Feb 2011 Location: chester	Had whining problem on mine (57 plate V70 D5) compressor replaced by local garage, still the same. Garage then brought in aircon specialist who tested gas and found moisture in it which he said causes whining. Evacuated all old gas then recharged - perfect Specialist told me moisture in gas causing a whine is a common problem on the v70s so may be worth trying before paying out a fortune for a compressor that may not be needed.

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