Dmf tolerances

2.8jonmy · 3rd September 2016, 13:26

How is the free play on my cdti dmf checked please?

Do I simply by hand move them in opposite directions and measure the difference at the ring rear?
Cheers Jon

EastPete · 3rd September 2016, 13:47

There should be two white paint marks adjacent to each other on the inner and outer masses of the DMF - the inner part is the central ring with 8 bolt holes in it. The two marks are at about 10 o'clock on the attached picture. Twist the two masses (outer/inner) against each other, and the white marks should not move more than 25mm (about one inch) apart. More than 25mm, and you have excessive play in the DMF.

In reality, it is rare for the DMF to fail on these cars - if you do want another one, the one in the picture is actually for sale (only done 39,000 miles - well within spec. with much less than 25mm play).

Pete

FrenchMike · 3rd September 2016, 14:25

a paper from Luk gives for the 415 0237 10

20 degrees or 6 teeth and a rock of 1.6 mm

Mike

2.8jonmy · 3rd September 2016, 14:38

Comprehensive answers guys, much appreciated.
Jon

3rd September 2016, 13:26	#1
2.8jonmy Regular poster Rover 75 tourer Join Date: Aug 2016 Location: Redruth Posts: 79 Thanks: 18 Thanked 12 Times in 7 Posts	Dmf tolerances How is the free play on my cdti dmf checked please? Do I simply by hand move them in opposite directions and measure the difference at the ring rear? Cheers Jon

3rd September 2016, 14:25	#3
FrenchMike This is my second home Rover 75 Saloon Join Date: Aug 2007 Location: Avignon Posts: 4,466 Thanks: 94 Thanked 661 Times in 554 Posts	a paper from Luk gives for the 415 0237 10 20 degrees or 6 teeth and a rock of 1.6 mm Mike

3rd September 2016, 14:38	#4
2.8jonmy Regular poster Rover 75 tourer Join Date: Aug 2016 Location: Redruth Posts: 79 Thanks: 18 Thanked 12 Times in 7 Posts	Comprehensive answers guys, much appreciated. Jon