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122 / 544 / 210 Heater Blower Motor - Permanent Fix / Repair 120-130

posted by  LowellBlvd on  Mon Mar 14 14:37 CST 2005
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I have had many 122s , 544s and a 210. They all had one thing in common, the blowers all sounded like they were trying to tear the car apart. I believe it has to do with worn shaft "bearings" which are just a saturn-like sphere rotating in a felt bushing all held in a pressed metal housing. Oiling only temporarilly soothed the beast.

I have discoved a permanent fix. The motor shaft is 7mm, the seats in the motor housing are 22mm. I bought (2) NACHI 627 ZZ C3 bearings (also the NSK part number) from Motion Industries (located all over the country) for $6.77 total.

The bearings are not just a good fit, they are a PERFECT FIT. (Although you will probably need to take 320 grade wet/dry and clean off offending light corrosion on the shaft).

The new sound is sweet, the rush of warm air is now the loudest sound. And I firmly belive that it now puts out more air flow as the bearings run smoother, letting the blower spin faster than ever.








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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    is there a good method for removing the fan?



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      posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]


      You might do better starting a new thread. This one is 19 years old.

      --
      Will I buy another Volvo??? We'll see....



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        posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

        The bearing number is still valid and is readily available still In the UK too.

        Nachi, 627-ZZ Shield, C3, 7mm ID, 22mm OD, 7mm WIDTH.



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          posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

          i got the bearings. The housing is 20mm, the bearings don't fit.... Off to search for bearings that fit.



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            posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

            Which heater fan motor do you have, early sealed or late open?

            Those bearings only work in sealed heater fan motors.

            All PV's and early 122 and 1800 got sealed motors with a 3 piece metal housing where you can't see the windings or magnets and came with a metal fan retained by a set screw.

            Later 122 and 1800 got open motors and came with a pressed on plastic fan.

            --
            Eric
            Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
            Torrance, CA 90502
            hiperformanceautoservice.com or oldvolvosonly.com



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              posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

              Delrin might work good there. I made throttle shaft bushings and the stuff fares so well without need for lube. I think it was Delrin,
              an almost black material I think, impregnated with graphite or similar.. it turns like cutting butter with a hot knife , on a lathe.

              I think early 240's had bushings and then they went to bearings and those are horrible to get to. the one in my 740 keeps filling with water. I got a new cheapo one from rock auto and it's similar 1 wire, but the flange is different so I'm trying to get it to seal and not fill again with water. the one in my 122 is an OEM electrolux ;-)



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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    This is one of those very RARE threads that really are way too few of in here! Good tip/trick/info! Thanks!

    Now - someone did it with the d..n 240 blower?? :-) -mine sounds like a big band of back alley cats!
    --
    /Soren



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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    That's great news. Now, should all of us 240/700 guys call you for a solution to the squeal of our motors????

    Thanks,

    Klaus
    --
    98 V70Rawd(101Kmi), 95 854T(85K mi), 75 164E(173K mi)



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