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DISCO3.CO.UK > Maintenance & Mods (D3)

2.7TDV6 new timing belt tensioner reset after initial rotati
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twr7cx
 


Member Since: 03 Mar 2019
Location: Tasmania
Posts: 168

Australia 2012 Discovery 4 TDV6 Base 5 Seat Auto Nara BronzeDiscovery 4
2.7TDV6 new timing belt tensioner reset after initial rotati

Following on from the point raised by PROFSR G and Flack in https://www.disco3.co.uk/forum/topic208066...1b5ec30629 regarding resetting the timing belt tensioner after the initial rotations, I noted the following in a recent replacement:

New timing belt and tensioner fitted, engine rotated twice and tensioner setting has changed to:



Looks like it's over tightened/tensioning?

Reset timing belt tensioner for notch in window, a further two engine rotations and it's remained in correct position:



An additional two rotations were then completed and there was no further movement of the timing belt tensioner setting. Mine - MY09 L319 D3 HSE Lion 2.7 TDV6 and modified MY03 LT L318 Discovery 2a HSE Td5 15P
Hers - MY12 L319 D4 Lion 2.7L TDV6
Dads - MY12 L319 D4 Lion 2.7L TDV6  
Post #236946923rd May 2024 11:19 am
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6267

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

Thats why the two rotations after setting it all up is important, not only to make sure the engine does not lock up, but the belt tension is correct.

Flack Thumbs Up  
Post #236953924th May 2024 9:42 am
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twr7cx
 


Member Since: 03 Mar 2019
Location: Tasmania
Posts: 168

Australia 2012 Discovery 4 TDV6 Base 5 Seat Auto Nara BronzeDiscovery 4

Am I correct that the tension has actually increased following the first two rotations (as the window has gone anti clockwise past the notch)? When reseting it it looks like the tension was reduced. Mine - MY09 L319 D3 HSE Lion 2.7 TDV6 and modified MY03 LT L318 Discovery 2a HSE Td5 15P
Hers - MY12 L319 D4 Lion 2.7L TDV6
Dads - MY12 L319 D4 Lion 2.7L TDV6  
Post #236971327th May 2024 2:32 am
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6267

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

@twr7cx Yes it does, the more anti-clockwise the tensioner moves away from the square raised bit on the backing of the the tensioner the tighter the belt is.

Flack Thumbs Up  
Post #236972927th May 2024 9:12 am
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