malc-c Posted July 17, 2008 Report Share Posted July 17, 2008 Where is the clutch? I wanna do it myself but need to no where it is first.The clutch is part of the pulley that's on the end of the compressor, its basically an electro-magnet and a metal plate. The metal plate is attached to the shaft of the compressor, and the gap between the plate and the edge of the pulley is set by shims between the plate and shaft. The gap should be 0.3mm to 0.5mm to ensure that when the coil is energised the plate is drawn in against the pulley and thus drives the compressor.This image may helpMalcolm Link to comment Share on other sites More sharing options...
malc-c Posted July 17, 2008 Report Share Posted July 17, 2008 This is what the shims look likeThe gap on my V70 is just over 1mm and if the weather holds I'm having mine re-shilled this weekend by a mate who's more of a car mechanic than I am ! Its easier for me to give him a few beers than to struggle in such a tight space. I've been told those that have experience in doing this can do it in less than an hour, but for a DIY job its worth setting aside a good morning or afternoon to do the job Link to comment Share on other sites More sharing options...
malc-c Posted July 17, 2008 Report Share Posted July 17, 2008 This pictorial "how to" shows how it's done on an 850, but the V70 should be more or less the same depending on the compressor mountinghttp://www.lomaxelectrical.co.uk/Volvo/vol...c_pump_shim.htm Link to comment Share on other sites More sharing options...
ViriiGuy Posted July 19, 2008 Report Share Posted July 19, 2008 Mine was doing the exact same thing a couple months ago. A friend and I popped the hood to have a look and saw he clutch was not engaging. We spun it by hand and watched the gap on it only to see that it was further out in some spots than others. Like it was warped. My friend then took a flathead screwdriver and found the low point on the clutch and shoved int he screwdriver and pulled. He did that until the clutch looked evenly spaced all the way around. We also jammed it full of penetrating oil at the same time. Since then, I have only had to kick start my clutch with a strong smack once. I plan of replacing it when the weather cools down. Link to comment Share on other sites More sharing options...
malc-c Posted July 19, 2008 Report Share Posted July 19, 2008 Ok guys, just wanted to pass on this info:I've just had a chap who does mobile A/C come round to do the "simple" job of re-shimming the compressor on my 1999 V70. He estimated the job to take no more than a couple of hours, and started at 9:30 this morning - he has just left at 4:30 this afetrnoon !First problem was the lack of space in order to get at the centre bolts and to fit any type of puller on. This was with the wheel and inner wheel arch pulled back. It seems there is a difference between the 850's and V70 in this area. Then, having managed to un-bolt the compressor to get better access he found there wasn't enough clearance against the plastic shrouding that caries wiring down and past the mainfold, so this had to be un-bolted and moved to give more clearance. At this point we found that the holes in the clutch plate on the compressor wer not threaded, so we couldn't fit the bolts in to free the plate.Just in case we damaged anything, I had found the same model of compressor on e-bay on a buy now option - I purchased it and it arrived yesterday morning. We therefore had the option to fit a replacement compressor, which given the issue with not being able to remove the clutch plate on the one on the car, was our only option. However, removing the old compresser from its shoe-horned position proved a hard task, resulting in the dryer being removed too. Eventually he freed the old compressor from the car. In the meantime I had shimmed the one off e-bay to give a 0.6m gap and made sure the pulley was free to rotate, and then he went about the task of fitting the replacement back in the car. This was where our luck turned and the re-fit went in better than the old one came out. He then placed more oil in the system, and then game the moment of truth. With the gas ready to fill we started the car and turned on the A/C - the clutch made a suttle click, click, click due to the low gas, which slowed as the gas was drawn in to the system. As it approched 760g the compressor was running with the clutch engaged, and stayed that way. The fan kicked in and the car began to cool - moments later the condensation began forming on the pipework. We turned off the A/c and the clutch dis-engaged, then turning the AC back on and a few seconds later the clutch re-engaged. I now have a working system We continued to run the A/c whilst we cleared up, and put away the tools, and I noticed that the car was cool even in right at the rear of the car where the dog sits. So hopefully, barring any small leaks in the system (it is a 9 year old car) we have resolved the problem with the A/C. I was also lucky in that the guy had quoted me a price so I got my moneys worth, but seeing the trouble he had, there is no way in the world would I say this is a job for the average DIY'er.If you are going to attempt this, make sure the clutch plate holes are threaded before you start. If they accept a M5 bolt then you might be lucky, if not then like me you will have no alternative but to replace the compressor as there is little room for any other form of puller in that space. Link to comment Share on other sites More sharing options...
booyaolian Posted July 22, 2008 Report Share Posted July 22, 2008 malc-c:how much shall i be looking into if i want to have my compressor replaced with a new one + labor? Link to comment Share on other sites More sharing options...
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