Volvo RWD 700 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 10/2004 700 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

M46 Clutch slave cylinder 700 1989

I'm new to this forum although I've been using the tech help for some time now - thanks to all who have posted! It's an excellent resource!
I have an 87 780 into which the 230FT engine and M6 transmission form an 89 740 wagon has been transplanted — so I've got lots of 'challenges' to address.
One by one I've been getting things sorted out and I'm very enthusiastic about what this car will be like te drive once it's properly set up.
My current problem has got me a bit stumped - so I've decided to quit lurking in the background and come forward with a call for help.
Hopefully if someone can help me with this it may be useful to someone else as well.
My shifting has been very hard. After some investigation, I've concluded that this is due to air in the hydraulic clutch activation - it's one of those. The symptoms are right for air in the system - plus the bleed valve is broken off, which would explain why the air hasn't been bled out.
I've got a new slave cylinder (and lock ring - it's one of those) and figured I'd be all set to swap out the old one for the new one.
BUT: once I got down under the car and went to take out the old lock ring that holds the slavecylinder into the 'eye' bracket on the side of the bell housing, I realized that there was no lock ring there! Not as far as I can see at any rate.
The slave looks to me like it is being held in place purely through alloy-to -alloy corrosion. I've tried penetrating fluid and heat (cautiously so far) as well as tapping both the 'eye' and the slave cylinder with a hammer. It's still not budging.
I'm sure others must have encountered this situation before (although I take it this design is not common - and I can now see why). If anyone has found a good way to get this thing removed, I'd be very grateful if they could tell me how they did it.
regards to all
Bryan Colleran










  REPLY TO THIS MESSAGE    PRINT   SAVE 

M46 Clutch slave cylinder 700 1989

I think you're doing everything right. The only thing I would suggest is to put a little rotational force (a pipe wrench or*) on the slave while heating and tapping. Good luck and be careful!
Vibration and heat will probably be the key to breaking loose the aluminum oxide. I hesitate to suggest an air chisel but if all else fails you might be able to disassemble the slave at the plunger end and drive it out with the air chisel. Again be careful the last thing you want to do is damage the bell housing.

*Large vise grips could give you some back and forth motion once you see a little movement.








  REPLY TO THIS MESSAGE    PRINT   SAVE 

M46 Clutch slave cylinder 700 1989

Thanks to 'Rolyak' for the suggestions.
After wrestilng for an hour or so with torch, pipewrench, vise grips and hammer, it came down to using the air chisel and voila! There it went.
Cleaned corrosion out of hole and new cylinder slid in easy as you please.
Now all that I've got to do is get it bled.
Any tips?







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.