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#551 |
Newbie
Join Date: Mar 2013
Location: Charlotte, NC
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![]() Hi TB!
I just installed an M90 in my 1993 945T and I can't get the clutch to disengage. What's the best way to adjust the engagement point of the clutch? In 1st gear with the rear end off the ground, the wheels spin the same even if the clutch pedal is fully depressed. The clutch setup is off another TBer's 945T, with a flat flywheel, 850 clutch disc, and a pressure plate - though I couldn't say which one (I imagine it came with the flat flywheel). Since its last installation, the clutch disc was replaced (damaged in shipping) and the flywheel was refaced. The clutch fork sticks out of the bellhousing perpendicular to the input shaft, and the pivot ball is already spaced on 4 washers. The slave cylinder rod is ~4 inches long. With the slave installed, the throwout bearing rests against the pressure plate. With the clutch pedal fully depressed, the slave moves the clutch fork ~1cm. The hydraulic system was bled by pressing the pedal & bleeding the slave. I tried a reverse pressure bleed but it didn't go anywhere. The master cylinder rod that attaches to the clutch pedal will spin, but that doesn't appear to adjust the rod length. Where should I start adjusting? I can post a video of the clutch actuating if it would help with diagnosis! Thank you! |
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#552 |
<Master Tech>
Join Date: Nov 2002
Location: California
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![]() I would really really really bleed the clutch. I did a Mini Cooper transmission recently and it called for a special tool to compress the slave cylinder during bleeding and I was, like, " I don't need that ****!" And I was wrong. Couldn't get the cclutch to relase. Wouldn't even go into gear. I made a special tool, rebleed, and got it to work.
I doubt you could even smash a dog dish pressure plate against a flat wheel, but maybe. Plate could also have bent or worn fingers. A fresh one should have been installed. I forget exact spec for clutch pedal throw, but 1 cm may not be enough.
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No Start Thread |
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#553 |
Newbie
Join Date: Jan 2016
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![]() Just wondering if I can pick your collective brains?
![]() So, I'm building a 240 with a T6 and whiteblock M90. What would the best clutch set up be for 370-400bhp and 460ishNm? 850t5 240mm solid flywheel with shorter bolts. 850r clutch and a either a 850r pressure plate or Sachs 707 (is this a direct bolt on fit?). Maintain the original external slave cylinder, fork and bearing or go to a concentric slave? Is there a better set-up that doesn't cost the earth? Any recommendations for UK suppliers? I'm waiting to hear back from TTV. Cheers for your help. ![]() |
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#554 | |
Board Member
Join Date: Dec 2007
Location: Shropshire, England, UK
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#555 | |
Newbie
Join Date: Jan 2016
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Concentric master cylinder it is then. I'll have a look at the ones you recommend but maybe I can go Volvo 850? Just thought I would clarify. I don't mind the prices of Volvo and Sachs new, so don't mind spending a few £££. I'm not in the position to spend on a custom clutch I don't think. I think the 850R organic plate will be fine. It's more the pressure plate really and what's best. Last edited by Mule; 01-21-2017 at 12:25 AM.. |
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#556 |
Newbie
Join Date: Nov 2016
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![]() Hi guys, can somebody ensure me, the gearbox on picture
http://www.prestolholding.cz/admin/u...2fdd4b8013.jpg is M90 whiteblock? Thanks a lot Last edited by pujdeme_domu; 02-24-2017 at 04:21 AM.. |
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#557 |
Newbie
Join Date: Dec 2013
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![]() Hi! Where on M90 I can find identification plate? I found number 6942485 on back side, it enough for detect modification M90?
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#558 | |
Volvo upgrades
Join Date: Sep 2005
Location: North Wales
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#559 |
Volvo upgrades
Join Date: Sep 2005
Location: North Wales
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#560 |
Newbie
Join Date: Nov 2016
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#561 |
Newbie
Join Date: Apr 2017
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![]() I am planning to put a M90 on my 1994 940 b200ft.
can i use the pressure plate from the m46 setup with a TDI clutch? It has the same specs as far as i can see but im not sure. Is there a difference between the m46 and the TDI pressure plate? both are 228mm |
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#562 |
Våga Vägra 8V
Join Date: Apr 2006
Location: Lower Saxony
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![]() oh.. my.. god.. i opened it... this... is.. a mess :D
does anyone have plans of the m90? ;) This is the first time i opened something and fearing not being able to put it together again :D Last edited by MadDog_945; 11-21-2019 at 04:44 AM.. |
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#563 |
Board Member
Join Date: Aug 2011
Location: Hungary
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![]() Good pics, keep them coming!
I'm curious about the bearing sizes, i hope they are not some special 'only for m90 only' ones. Getting the preload right with new bearings is going to be pita though, more likely because I don't even know if the factory specs exist in any greenbook.
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1980 Brown 244 GL ![]() |
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#564 | |
Våga Vägra 8V
Join Date: Apr 2006
Location: Lower Saxony
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#565 |
Board Member
Join Date: Jul 2010
Location: Belgium
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![]() So i got myself this M90 gearbox to install in my Amazon Combi B230 Turbo.
I am now running a M46, it is still holding up with the 227HP/373nm but i don't want to wait for d-day and prepair a stronger unit. Ofcorse more tunnel work and other mods will have to be done. My guess was it was a M90L2. Turing the input and count the revs in versus out, first and second gear confirmed it is indeed a L Type (L1 or L2). Then doing the same on fifth gear to know if it is the L1 or the L2. BUT... to my surprise it matches neither one of those ![]() ![]() ![]() The L1 type has a 5 ratio of 0.81 to 1 and the L2 type 0.7 to one. Mine has a 0.7525 to one ratio! I googled about an hour to find other gearing types for the box but ALL showed the same, know as 0.81 and 0.7 5th gear. I learned the internals *might* be interchangable between FWD M56/M66 and M90 boxes, so i looked that too (maybe someone switched the gearing on 5), but also for these boxes no 0.7525 or anything near that seem to exist. I'm sure i did the correct measuring: I first turned the input shaft until the out made a full turn. The in made about just 3/4 of a turn, just a tad more. To find out how much exactly, i then turned until the out made 4 turns. The in made then 3 turns and a bigger tad. So then i turned until the out made 16 turns, the in made 12 and about 14° extra. Then i made 12 times 12 turns (on input) and found that the mark i made on input then almost made 1/2 turn extra to align the out on it's mark. So i turned input again 12 times 12 turns (now total 24 x 12) and fount i needed to turn it once more 12 turns to get the input mark straight up (360 degrees) again. Margin of error reading marks is very small now the input shaft turned 301 times, so the fault is devided by that! 2x(12x12), +12 (+1 the mark turned 360° extra) while the out made 25 x 16 = 400 turns. 301/400 = 0.7525 gear ratio. Now i suspect ALL documentation is WRONG about the L2 being 0.7 in 5 Did anyone alread did the math turning and counting, or did anyone already OPEN THE BOX AND COUNT THE TEETH ON FIFTH GEAR GEARS? or do i just have an exotic and spooky M90 ![]() Last edited by RolinOldies; 10-23-2018 at 01:45 AM.. |
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#566 |
Board Member
Join Date: Jul 2010
Location: Belgium
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![]() Two days ago i bought myself another M90, this time a H1 type.
I did the test on all gears by turning and all are just like in the spec's. Next step will be opening the L2 box, since no one seem te have done this to count the teeth on 5th... I re-tested and re-calculated over and over, still come to 0.7525 / 1 or 270.9 degrees on the in for a full turn on out. ![]() |
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#567 |
Board Member
Join Date: Jul 2010
Location: Belgium
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![]() Hi MadDog, did you put yours back together?
![]() I also opened my L2 to check 5th gear and i was right!, drive gear is 46 teeth, driven gear is 30 teeht so 0.652174 ratio multiplied by the end ratio from secundary axle to outgoing axle (26 to 30 teeth) 1.153846 makes 0.7525084 SO ALL DOCUMENTATION IS WRONG!!!, or i have a special one ![]() on this image of you the 5th is (for an L2) 30 teeth on the right axle top gear, and 46 teeth on the middle axle top gear (left axle is upside down in your pic but not important for 5th) I didn't get the outgoing axle out of the housing tail, did you press it or just hammer? Is that middle part some removable bushing? Now i want to also open my H1 to check if i can swap first gear into the L2 ![]() Anyone ever tried this? |
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#568 |
Våga Vägra 8V
Join Date: Apr 2006
Location: Lower Saxony
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![]() mh.. sry long time ago.. i can remember i struggled hard on this one.. i had a guy helping me keeping the 2 shafts out of the way then just pull like a retard and it popped out..
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#569 |
Board Member
Join Date: Jul 2010
Location: Belgium
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![]() Ok, i'll get it off somehow
![]() Here is an image i found on the web i added some extra info and translate to another unspeakable langue ![]() ![]() Also found that third gear is NOT 1.38 but 1.35, could be 1.38 if gear 16 had 42 teeth instead 41, i think someone miscount making the info, i count it at least 5 times ![]() and Reverse is NOT 3.00 but 3.80, chequed also by turning, but who cares about reverse ![]() Here's the ratios i calculated on my L2 box: 1st: 3.9053254 2nd: 2.1978022 3th: 1.3516484 4th: 1 5th: 0.7525084 R: 3.8051889 Based on the number of teeth in the pic you can do the math. After (if) i open my H1 box i'll post results here too. cheers! Last edited by RolinOldies; 01-02-2019 at 05:57 PM.. |
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#570 |
Ring apprentice
Join Date: Aug 2004
Location: Belgium, Gruitrode
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![]() Does anyone have the pictures of the gearbox parts in the first post?
Just picked up another M90L2 and need some parts replaced. Don't want to bother the dealer with all my questions about stuff they don't know. Thanks.
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2019 Peugeot Expert 2005 V70 - 2.4D 1992 740 B230FD 1982 242 B230FK |
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#571 |
Board Member
Join Date: Mar 2009
Location: St. Louis, Misery, the dookey hole.
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![]() On a facebook article:
https://www.facebook.com/groups/2376...9103561083561/ Someone selling an M90 in Indiana. ![]() Volvo M90 Gearbox Volvo PN 1023650-8 Post here to show this part number exists in the Volvo M90 all I want and need to know, verily!
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Volvo "Buttermilk" MacDuff -- I've owned only Volvo 240s since 1985. RIP, yet beloved: 1975 244 DL (B20, M40) 1976 242 DL (B21, M46, Moonroof - an SRO?) 1979 245 DL (B21, M46) 1979 242 GT (B21, M46, Moonroof - an SRO? Grey Market from Holland) Currently owned, beloved, operating, driven, if occasionally: 1990 240 (245) DL (B230, M47 II) 1991 240 (244) (B230, M47 II, Moonroof. Grey Market from Germany) 1992 240 (244) GL (B230, M47 II, L-jet 3.1, Moonroof) |
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#572 |
Newbie
Join Date: Nov 2015
Location: Silesia
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![]() Hi, does anyone maybe have pictures from the first post of this topic?
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#573 |
<Master Tech>
Join Date: Nov 2002
Location: California
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![]() I just finished my M90 install today and went for a successful test drive!
Resurfaced dogdish flywheel, Sachs/LUK diesel pressure plate and disc, 2 quarts of Syncromesh MTL. I shimmed the clutch fork pivot pin with three washers. I bled the clutch several times by vacuum from below and I have a GOOD pedal feel. Can somebody post pics of how the shifter assembly mounts to the body (two thru bolts/nuts?) and the order of the bushings/rubbers below the shift knob? Last edited by ZVOLV; 03-12-2021 at 12:59 PM.. |
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#574 |
The Librarian
Join Date: Nov 2011
Location: So Cal
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![]() Does this help?
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#575 |
Ryan's spanner monkey
Join Date: Jan 2004
Location: Lincoln, UK
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![]() Component 19 doesn't look quite like that in reality. The 'hook' bracket is wider, and is held in place by the same two bolts which hold in plate 33.
cheers James
__________________
'13 V70 D4 '89 740 Turbo Intercooler '88 360 Turbo Intercooler '84 360 GLT '81 343 GLS R-Sport '80 343 DL '70 164 - Under Restoration PM me if you're looking for Euro parts!
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