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Technical Replacing dual mass flywheel 1.9JTD how do you lock theflywheel

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Technical Replacing dual mass flywheel 1.9JTD how do you lock theflywheel

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SillyBilly

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Hi
I'm in the middle of replacing my clutch and dual mass flywheel. Have the gearbox out and the clutch off. The dual mass flywheel is held on by 6 21mm bolts. How do I lock the flywheel to undo these bolts?
I bought myself a lasertools 3471 timing kit which includes the only googled flywheel locking tool, but this is no use because I find it is held in place by the clutch housing which is no longer there! Is there another tool for this which bolts on the engine?:idea:
Also if I ever get them off what is the torque setting for putting them back!
Thanks
 
Perhaps I am the only person trying this at home!
I have made my own tool and have the dmf off. I checked the torque on 2 of the six bolts when undoing them by gradually raising the torque wrench setting until it no longer 'clicked over'. They were at 160Nm so that is what I will fit them to unless someone knows better! I want to refit today while it is dry so an early relpy would be much appreciated
Thanks
 
I only have eLEARN fot the Stilo but assuming the JTD engines are the same:

There's a different flywheel locking tool for use with the engine or removed as in this diagram. I doubt it would have been any use to you anyway because it bolts onto the Fiat engine stand.

The flywheel bolt torques are shown as 16 daNm for the 16 valve JTD and 14.7 - 21.2 daNm for the 8 valve engine so your assumption of 160Nm appears to be correct in this instance. However, your method is not usualy an accurate way to check it because bolts 'stick' and generaly require more torque to remove them than to refit them.

The flywheel bolts should be replaced with new ones that have locking sealant on the threads. If you're going to use the old ones, clean them and apply locking sealant or you may get oil leaks from the crankshaft threads.
 

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Hi
I'm talking to myself again!
Been in touch with Valeo who say that the bolts used are stretch bolts and have to be replaced. They didn't have the setting on file. When I asked about the six T40 bolts on the pressure plate they said that they had to be replaced as well. I asked what the torque settings were and they said 160Nm which is what the six big dmf flywheel bolts were when I undid them. I find it difficult to believe as the T40 bit would not withstand that sort of torque and they came out easily!!
Anyone got a file of Multipla torque settings for these bits or can advise on the need to replace the bolts?
 
Last edited:
Sorry Davren, I didn't refresh the screen before posting again!
Thanks for the info. One is never too confident about what you are told or read. You would hope that the manufacturer would have the info but part of it was absurd. Before I saw your post I rang the local stealer and asked if they had the 6 bolts in stock and what the torque was. I was put through to the workshop and the mechanic looked it up and said 136-168Mn and he would go to the top end and 160Nm would be fine. I asked him about replacing the 'stretch' bolts. He said he had done dozens of them. He didn't think they were stretch bolts and 'if he was doing it for himself' he would clean them up and use loctite. (I didn't press him to see if the workshop did the same!) He said the new ones come with dry loctite on them. I asked about the torque of the six pressure plate bolts and he said there wasn't anything stated for them and to loctite them and tighten them up with a small ratchet which is what I was planning to do!
 
I've never thought of them as stretch bolts and I don't think they are.

They are pre treated with a locking sealant compound and it's always best practice to replace that type of bolt rather that re apply the locking sealant. Probably just because it's usually difficult to remove the old compound. I have reused them after cleaning the old compound out with a threading die.
 
186A8.000 relates to the Multipla version of the JTD engine but I'm not sure whether it's the 8 or 16 valve version. If you look under engine cover, the 8 valve engine has one black plastic cam cover whereas the 16 valve engine has two alloy cam covers.

Doesn't really matter if you just want to know which torque figure to use. If one is 14.7 to 21.2 and the other is 16 daNm. then 16 daNm (160 Nm) is OK for both.
 
I've been talking to myself (about mpg) on this forum for weeks so thought i'd say hello!!

Don't know how to do your flywheel only I'd get a solid one and not a dual mass one!!

I've got clutch judder so think mine will need doing soon, feel free to pop over to the wirral with your tools once you've mastered it!!

st1vo
 
Hi
You have to be patient sometimes but it is difficult when the car is in bits and it might rain again tomorrow:)!
I hope it will be a long time before I have to do my clutch again..
Hope you get your mpg sorted - don't forget to do a brim to brim check rather than use the computer's value
 
I replaced my bolts when i did mine but not because they were stretch but because the clutch had been fitted the wrong way around a year before and the clutch itself was wearing down the dmf bolts :bang:.
 
Hi
This has happened to many people. The Valeo website has a 10782776164AD33EA4AC143.pdf saying which way round. Cambio Lato or Lato Cambio printed on the clutch plate apparently means 'Gearbox Side'.
The trouble is they shrink wrap the plate and cover, with the plate the wrong way so the long stub is inside the cover so you can see why it happens:)
Mine is on the right way round.
Do you happen to know where I can get an exact profile of the 1.860.846.000 countertorque or brace needed to lock the flywheel to remove the 6 bolts. I made my own tool but know I could fabricate one.
There are only 4 google worlwide items for this. Fiat don't sell it and noone makes one for the aftermarket.
 
The tool is listed in ePER, the spare parts catalogue, but the part number has changed to 1860846001 costs about £7 and is orderable from Fiat.

As I posted at #3, it's unlikely to be of any use to you though because it's designed to bolt to the Fiat engine stand, not the engine.
 
I basicly used a prybar lodged into the flywheel tooth, not the best but it worked.
 
By far the simplest way of locking your flywheel is to use one of the lifting brackets fitted to the engine/gearbox. there's usually one attached to the front gearbox mounting or one of the bellhousing bolts. I have a few of these I have liberated from various Fiats. Use a clutch bolt to screw the small end of the bracket to the flywheel, you should now be able to insert a large phillips screwdriver into the large hole and through a bellhousing bolthole. This will lock your flywheel. I use this on various makes and works fine. I agree that the flywheel bolts are not stretch bolts as often claimed. Dont stress over torque for clutch bolts, just nip them up securely but not too tight, they won't come loose. More trouble is caused by overtightening.
 
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