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M47 replacement: What to do while I'm in there 200 1991

posted by  Epic2112 on  Sun May 14 17:22 CST 2023
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last visit: Mon Oct 20 12:15 CST 2014
[RELATED]

The M47 in my car finally blew up, after making noise for probably about 20K miles. I have a spare handy, but would love for someone else to double check my list of stuff I should do while I'm in there and let me know if there's anything I'm forgetting, since I'm putting together my shopping list. Here's what I've got so far:

*Clutch (disc, pp, pilot bearing, throwout bearing)
*Rear main seal
*Guibo
*Driveshaft bearing/bushing/spring/etc. (this has also been making noise)
*All the little bushings/cup things for the shifter
*Those little pins that go in the barrel that attach the shifter to the transmission (anyone have a part number for these?)
*Foam shifter insulator
*Clutch cable/bushing/spring/weight as needed (there's no indication of any clutch cable issues, but just to be safe)
*Shifter cage bushings (how often do these actually go bad?)

Thanks!








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    M47 replacement: What to do while I'm in there 200 1991

    posted by  Dave Stevens on  Sun May 14 18:24 CST 2023
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    last visit: Sun Jan 1 02:36 CST 2012
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    Apparently two similar shifter pins used: plain p/n 381528, notched p/n 1232457,
    Both still available in the Volvo parts chain, including Tasca. The Skandix link here is where I first found them as that site is often an easier starting point for odd parts
    https://www.skandix.de/en/spare-parts/drive-train/transmission/manual-transmission/transmission-control/pin-shift-rod/1299/
    --
    Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now








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      M47 replacement: What to do while I'm in there 200 1991

      posted by  Epic2112 on  Mon May 15 10:47 CST 2023
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      last visit: Mon Oct 20 12:15 CST 2014
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      Thanks! Any idea what the difference is between the notched and unnotched? I've never seen the notched ones.








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        M47 replacement: What to do while I'm in there 200 1991

        posted by  Dave Stevens on  Mon May 15 11:50 CST 2023
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        last visit: Sun Jan 1 02:36 CST 2012
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        I'm not sure why the difference, but I'd expect something like a circlip or more likely a ridge on the shifter rod acts as a retainer, perhaps less likely a ball bearing to prevent wear. I note the notched one is later production, so likely yours. I just went to that Skandix link again without having gone through the vehicle selector for an M47 and another plain pin pops up, p/n 1239660, this for early 240s prior to M47. The pic suggests a slightly curved middle area. Early on I had M41 in my 122S and 144GL, but never worked on them beyond a fluid change.
        --
        Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now








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          M47 replacement: What to do while I'm in there 200 1991

          posted by  Epic2112 on  Mon May 15 12:00 CST 2023
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          last visit: Mon Oct 20 12:15 CST 2014
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          My car has the unnotched. Sadly this will be my 2nd M47 in this car (the car started out as an auto). These transmissions are somewhat less stout than the rest of the car, apparently. I've been using the unnotched pins, so that's probably what I'll go with this time as well.








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            M47 replacement: What to do while I'm in there 200 1991

            posted by  Dave Stevens on  Mon May 15 13:20 CST 2023
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            last visit: Sun Jan 1 02:36 CST 2012
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            Here's the schematic with the notched pin. I should have looked for it earlier. There's a set screw #41 that goes into the notch.


            The schematic for the plain pin comes up the same, showing the notched pin. I now imagine either pin can be used with any matching shifter in the M series trans. The set screw in the notch would act as a better retainer, less likely to loosen and let the pin work loose. Also, the metal used with the notched pin looks different in pictures, perhaps harder to lessen wear, the set screw no longer grabbing as well into harder metal, hence the notch to prevent it all working loose. I was starting to think of thread locker, but then whoa, not with a set screw, you'd never get it out.
            --
            Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now








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              M47 replacement: What to do while I'm in there 200 1991

              posted by  Epic2112 on  Mon May 15 22:21 CST 2023
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              last visit: Mon Oct 20 12:15 CST 2014
              [RELATED]

              Aha, I pulled the transmission this afternoon, and as soon as I got under the car to remove the shifter I realized what that notched pin was. The pins I'm after are #9 in this diagram. Those are much thinner and get noticeably worn out, which introduces a significant amount of slop at the shifter. Happily, as I started to dig through my parts stash, I found I have a pair of new ones. I must have ordered some extras the last time I swapped a transmission.

              Thanks!







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