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Disco 4 3.0 sdv6 crankshaft sprocket

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tungi

Member Since: 08 May 2018
Location: Lytham
Posts: 32

2009 Discovery 4 3.0 TDV6 HSE Lux Auto Bali Blue

Disco 4 3.0 sdv6 crankshaft sprocket

I’ve just removed the sprocket off my crankshaft, and can see 2 grooves in the sprocket bores but no locating pin in the crankshaft, can this be right? How can you correctly position the sprocket in relation to the pistons? Some help would be gratefully appreciated.

1st Jun 2018 4:14 pm

Gareth
Site Moderator

Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26701

You need the timing pins I believe. One in the flywheel (starter removed) and one in each cam sprocket.

1st Jun 2018 4:51 pm

tungi

Member Since: 08 May 2018
Location: Lytham
Posts: 32

Hi thanks for the reply. What about the front crankshaft sprocket

1st Jun 2018 6:07 pm

Gareth
Site Moderator

Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26701

Well I’ve never done a timing belt personally, but I think so long as the pins are in, then fit the sprocket and belt. The engine will be timed as the pins will have set the crank and the cams to the correct position. The sprocket just needs to be bloody tight!

1st Jun 2018 7:39 pm

defector

Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1420

2008 Discovery 3 TDV6 HSE Auto Zermatt Silver

Sprocket does not have any locating pins or half moon key.
It is just tightened up when the cambelt is in position and timed up with the cams and crank flywheel.

Just remember to remove the camshaft timing pins when tightening crank pulley.

2nd Jun 2018 5:14 am

tungi

Member Since: 08 May 2018
Location: Lytham
Posts: 32

Many thanks Defector. Seems like a design oversight, but haho. I will do as you have said

2nd Jun 2018 8:24 am

Flack

Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6234

2007 Discovery 3 TDV6 XS Auto Stornoway Grey

Did you not lock the crank to get it off ?.. why did you take it off, Oil Pump change?, no need to ,to do the belts if thats all you have done. Make sure its tightened to the correct amount or it will slip. 100nm then another 90 degrees.

Flack

2nd Jun 2018 8:34 am

Disco_Mikey

Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20731

2005 Discovery 3 TDV6 HSE Auto Cairns Blue

Except the 3.0 bolt is much tighter than that Mick... My D3 Build Thread

TDV8 Retrofit Build Thread

2nd Jun 2018 8:44 am

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