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A/C Compressor not lining up to crank pulley 200

uid 29404's pic
posted by  punk240 on  Sat Dec 23 15:57 CST 2006
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last visit: Mon Jul 14 15:23 CST 2014
[RELATED]

Today i removed the entire PS+AC bracket to replace all the accesory mount bushings - took about 30-40 mins.
Upon reassembly I couldn't get the pulleys to line up - consulted both Bently and Chilton and noted that the previous owner had some real "African Engineering" in the pulley config.
While following the Belt layout things just got worse.
The dual pulley for the AC was protruding way to far to the front (15-18mm).
Started looking at the cresent brackets under the compressor and noticed that they were on the inside of the flange-ears
Moved them to the outer side of the ears and i had about a 10 mm over-expansion to the bushings and the pulley was cock-eyed.
Threw a wratchet strap on the crank and AC pulleys and zipped it closer to line but crawled under to see the mounts were being warped!

Should the cresent brackets be on corresponding sides (fore /fore) or oppositional (fore/aft) ???

TIM








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    A/C Compressor not lining up to crank pulley 200

    uid 29404's pic
    posted by  punk240 on  Sat Dec 23 16:25 CST 2006
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    last visit: Mon Jul 14 15:23 CST 2014
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    I pulled the main bracket off with the PS+AC still attached to their lines and sat it in front of the car with a fist full of AMB's from Groton and systematically removed one then replaced it with a new one.
    I made a brain note that they were all inserted from the outer rather than the inner...
    What sucks is that the junk yard is closed tomorrow whereas I could go there and check out some other volvos and be damn sure of config's...

    Anyway - my little attempt of removed road crud from the radiator killed the core - the tapping "slid" the tubes forward a bit inadvertently fissuring the ends of the tubes - sob sob
    The rad is 20 years old (Volvo plackard still on the top) and the fins were plugged really well - time for a new one.

    The Volvo continues Dry Dock status for another week i pressume... sigh
    I already miss it!

    Thanks,
    TIM








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      re. Junkyard radiators 200

      uid 25912's pic
      posted by  Sven's Maintainer on  Sat Dec 23 16:40 CST 2006
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      last visit: Sun Sep 16 20:44 CST 2012
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      I've had decent luck with used radiators.

      The later Volvo/Blackstone ones had some improvements to the plastic hose necks.
      You will find either:

      Yellow/white nylon type plastic at the wide hose connections (not for the smallest hose).
      - or
      Metal sleeve inside the plastic hose neck.

      I don't have any hard information on this but it looks like these are the newer ones. I'd have good confidence in one of these used if it looks OK otherwise and holds pressure. Right after buying it at the yard, take it to a radiator shop and ask them to test it. If no good, go back to the yard. Yard likes happy customers, so it's usually OK doing it that way.

      As your experience shows, the Volvo/Blackstone radiators last a LONG time. Sometimes we gripe about the plastic end caps etc etc but at the end of the day, those are very reliable radiators. I'd take a decent used one over a new no-name. The aluminum construction is very lightweight, and transfers heat very efficiently.

      The other really respected brand is Nissens. You'll find three row and two row Nissens, either should be good.
      --
      Sven: '89 245 NA, 951 ECU, open-front airbox, E-fan, 205/65-15's, IPD sways, E-Codes, amber front corner reflectors. Wifemobile '89 245 NA stock. 90 244 NA spare, runs.








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    A/C Compressor not lining up to crank pulley 200

    uid 25912's pic
    posted by  Sven's Maintainer on  Sat Dec 23 16:10 CST 2006
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    last visit: Sun Sep 16 20:44 CST 2012
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    Someone else will have to answer re. the position of the compressor's brackets + ears.

    Usually they install pointed inwards; that is you slide it into position towards the accessory. Wide part of bushing goes away from the accessory. That's how the alt bushings are, anyway.

    HOWEVER you should know that the crank pulley is manufactured as a 3-piece assembly which can delaminate. Pulley can move forward or rearward from its hub. This may be happening on your car.

    Crank pulley has a metal hub which installs on the end of the crankshaft. Next is a rubber ring. The pulley is the outer portion, bonded to the rubber ring. When the bond of rubber to metal lets go, the pulley can go forward or rearward. Neither is good, and can cause much more trouble than squeaky belts. Forward = flies off into the radiator fan and ??. Rearward = it cuts into the timing belt cover and damages the timing belt.

    Lastly, the pulley can also rotate on the rubber/hub. This has no effect on the belt operation, however it messes up the timing mark. As the timing mark is on the outside of the pulley it is now NOT at top dead center, and if you use the mark to adjust ignition timing it will be set wrong. This last does not apply on '89 and later cars as their timing is set by the crank position sensor at rear of engine, and is not adjustable.

    --
    Sven: '89 245 NA, 951 ECU, open-front airbox, E-fan, 205/65-15's, IPD sways, E-Codes, amber front corner reflectors. Wifemobile '89 245 NA stock. 90 244 NA spare, runs.








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    A/C Compressor not lining up to crank pulley 200

    posted by  Jorrell on  Sat Dec 23 16:09 CST 2006
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    last visit: Thu Dec 27 03:00 CST 2012
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    Best guess, the rubber bushings (at least a few), are installed from the wrong direction. Look at the offset of the pulleys, from there, look at the bushings and see if inserting them from the other direction will resolve the problem.

    By the way, 45 minutes for that job ain't bad!

    jorrell
    --
    92 245 245K miles, IPD'd to the hilt, 06 XC70, 00 Eclipse custom Turbo setup...currently in pieces








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      A/C Compressor not lining up to crank pulley 200

      posted by  loose_moose on  Tue Jul 12 07:50 CST 2011
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      last visit: Sat Apr 6 11:51 CST 2013
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      45 MINUTES!!! No doubt. You must have small hands...lol. I'm having basically the same issue. A/C pulley is 'leaning' toward the crank pulley. I thought I discovered the problem last night, being that the adjustment bracket on the front side of the compressor was on the inside of compressor casting where the bolt goes through. It looked like it was blocking the compressor from coming all the way back. My thinking was that it should look like the alternator adjustment bracket, i.e. long bolt in front of compressor. This causes the bracket to pushed out about 1/2" or so from its mounting bushing next to the engine. Maybe, as someone posted above, posting some pictures might help. I've got the time, so I think I will.

      Loose Moose
      Nashville, TN







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