How to look after a dual mass flywheel?

How to look after a dual mass flywheel?

Author
Discussion

itiejim

Original Poster:

1,821 posts

204 months

Sunday 19th October 2014
quotequote all
I've just had the DMF changed under warranty (thankfully) on our 2010 Hyundai Santa Fe with 50k miles. The list price of the part alone was £1600, and, as I anticipate keeping the car another 50-60K, I'm rather keen not to have to change it again.

Is there any general consensus on how to reduce wear on these things (or what sort of use tends to shorten or extend their life)?

Locknut

653 posts

136 months

Sunday 19th October 2014
quotequote all
Running the engine at low revs while pulling hard is not good.

stevieturbo

17,229 posts

246 months

Monday 20th October 2014
quotequote all
If you dont run the engine, they'll last a very long time.

But the reality is they're st. They fail

Drive gently, engage drive via the clutch gently etc etc

No off/on throttle unnecessarily. Avoid anything that loads/unloads/loads/unloads etc the DMF.

But they're still st.

mybrainhurts

90,809 posts

254 months

Monday 20th October 2014
quotequote all
Car Mechanics mag said:
Avoid...
Labouring in too high a gear.
Overloading by towing a heavy trailer.
Ignoring ignition problems such as misfires.
Remapping.
Hyanddry are taking the piddle with that price.

Just had a 2008 Volvo V70 done for £960. DMF, clutch, bearing, new gearbox oil, labour and VAT. 250,000 miles.



Edited by mybrainhurts on Monday 20th October 00:33

BritishRacinGrin

24,602 posts

159 months

Monday 20th October 2014
quotequote all
The part they fitted may be a new and improved version, they're still trying to make DMFs which don't fall apart every 50k.

Avoid laboring the engine at low revvs- use revvs and run the gears longer so that you slot into the next gear up at slightly higher RPM. If you've slowed and need to move off again, downshift to the right gear.

Sardonicus

18,928 posts

220 months

Monday 20th October 2014
quotequote all
stevieturbo said:
If you dont run the engine, they'll last a very long time.

But the reality is they're st. They fail

Drive gently, engage drive via the clutch gently etc etc

No off/on throttle unnecessarily. Avoid anything that loads/unloads/loads/unloads etc the DMF.

But they're still st.
This ^ summed up don't drive like a tit ................ but yes it will still fail eventually frown

Bennachie

1,090 posts

150 months

Monday 20th October 2014
quotequote all
Drive it properly like a petrol engined vehicle. Rev it as you start from rest rather than just letting the clutch out and the torque taking it and it will last a long time.
The DMF failures are almost exclusively on diesels. There are lots of DMF on petrol vehicles that give little trouble. Admittedly it is the characteristics of the diesel engine that kills DMF but driving style can ameliorate failures to a great degree.

itiejim

Original Poster:

1,821 posts

204 months

Thursday 23rd October 2014
quotequote all
Thanks for the replies folks, sounds like sensible advice. Prepare for a re-post in (hopefully) 100k time saying it's still going strong!

shoehorn

686 posts

142 months

Thursday 23rd October 2014
quotequote all
How do they have the bare faced audacity to ask £1600 for a flywheel and clutch,the thieving bds?
Or were they in fact wearing scarves over their faces,Dick Turpin style?
My old pal has done 3 or 4 of those this year,the parts come to roughly 400 quid to him.
Diabolical theft.

jontysafe

2,351 posts

177 months

Thursday 23rd October 2014
quotequote all
I have a DMF in my VW and nary a bit of bother. I look after it my buying it flowers and taking it for the occasional dinner though. seems to work

Bennachie

1,090 posts

150 months

Thursday 23rd October 2014
quotequote all
Dodgy Male Friend?



or a flywheel ?

:-)

crossy67

1,570 posts

178 months

Thursday 23rd October 2014
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In the middle of changing one on an Astra 1.7cdti with 300,000km on it. It has gone really badly but with it covering 300,000km I think it's quite good.

S0 What

3,358 posts

171 months

Thursday 23rd October 2014
quotequote all
crossy67 said:
In the middle of changing one on an Astra 1.7cdti with 300,000km on it. It has gone really badly but with it covering 300,000km I think it's quite good.
I love em when they have totaly gone and the outer has spun round covering the bolt heads so you have to cut the Bstds off with a grinder furious
especialy when it's one of those jobs where the box is still in the bay and you now have to drop the subframe to remove it to get the grinder in there cry

crossy67

1,570 posts

178 months

Friday 24th October 2014
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I was a bit lucky, it had spun but I could just about get a Torx bit in there. Box and subframe off though frown

Sardonicus

18,928 posts

220 months

Friday 24th October 2014
quotequote all
S0 What said:
I love em when they have totaly gone and the outer has spun round covering the bolt heads so you have to cut the Bstds off with a grinder furious
especialy when it's one of those jobs where the box is still in the bay and you now have to drop the subframe to remove it to get the grinder in there cry
And they call it progress headache bloody things rolleyes mind you I never liked clutches or gearbox replacement (auto or manual) as a job anyway this hasn't improved with age either frown