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Separating Auto Box and 2.7 TDV6 Engine

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Dogeggs2000

Member Since: 31 Oct 2012
Location: Highlands
Posts: 30

2008 Discovery 3 TDV6 XS Auto Barolo Black

Separating Auto Box and 2.7 TDV6 Engine

Hi,

Body is off so looking for any pointers please on separating the TDV6 and auto box so I can lift the engine out and leave box in. Just wondering about how to or where best (if required at all) to disconnect the fluid cooling pipes and if there are any hidden bell housing bolts to worry about or anything I need to undo on the torque converter? A very basic 'how to' would be handy.

Thanks in advance

Carl

27th Mar 2018 10:12 am

BrettKaz

Member Since: 11 Nov 2013
Location: Canberra
Posts: 209

2007 Discovery 3 TDV6 HSE Auto Stornoway Grey

It’s pretty straightforward. Cross over pipe brackets off (take photo of orientation). BH bolts. Exhaust / turbo bracket.

To get to the TC bolts you need to take out the starter. Remove fuel cooler. Red lead off in situ... black when out. Now Easier w/2x people... Turn crank w/ 3ft extension until you see a bolt through the starter hole. Undo ... rotate crank to the next ... there are 4 bolts in all. Note to align the tc with the flex plate on reinstall there is an inspection rubber grommet in the shape of a ‘D’ (on it’s back) at the rear bottom of BHousing there is a mark on the TC in the shape of a D ... align the marking in the window/grommet hole and one bolt hole in starter hole and you are away. Don’t torque the 1st 2nd or third until the last bolt is in.

Put a block of wood under BH prior to removal of engine ... if that’s coming out.

Can’t remember where the trans fluid cooler comes off ... think at the box itself. Don’t try to remove the breathers at the box tho.

Take a photo of how the fuel pipes route. Remember the trans cooler pipes attach to one of of the aux belt pumps (lower LHS ... a/c?) photo that routing before removal.

27th Mar 2018 12:50 pm

Dogeggs2000

Member Since: 31 Oct 2012
Location: Highlands
Posts: 30

Brettkaz, thanks so much for this. I knew there was more to it and just needed the right person to guide me. I'm glad I asked now as I really can't afford to be breaking anything!! I have the starter off already as I removed it for the flywheel locking tool in my earlier diagnostics which established the engine is :censored:ed

I have photographed and labelled everything so it will end up on here as a complete guide when complete.

Thanks again for you reply.

Carl

27th Mar 2018 5:27 pm

BrettKaz

Member Since: 11 Nov 2013
Location: Canberra
Posts: 209

By far the biggest problem with putting an engine in yourself is not taking stuff off but putting it back on in the correct order and where it came from. I pulled my engine out the top but decided to take the body off for reinstall. thank goodness. Still took me about 2hours just to route the fuel pipes again with total access.

Also snapped 3x bolts from over torquing. 1x not bothering to look up correct torque, 1x cheap wrench at outer limit of range, 1x not reading setting properly.

Here are torque specs you will need - these are cross referenced to the manual so you can check them - I have checked about 10x but let me know if you notice any errors - it's the sort of information you think twice about posting so you don't ruin somebody's day/week.

https://www.disco3.co.uk/gallery/thumbnails.php?album=33034

27th Mar 2018 10:29 pm

Dogeggs2000

Member Since: 31 Oct 2012
Location: Highlands
Posts: 30

Yet again, thanks very much, I didn't have this information and would have needed to look it up. I have a full set of manuals on the way so will cross check the values and I think buy a new calibrated torque wrench!

Thanks again

Carl

28th Mar 2018 10:22 am

Fireburst

Member Since: 02 Nov 2017
Location: Hertfordshire
Posts: 187

2012 Discovery 4 3.0 SDV6 HSE Auto Orkney Grey

Hi
I have just been looking at the torque figure chart and think there is a typo regarding the flexplate figure,
I think it should read 1/4 turn not 1/2 turn.

This would have been noticed if you were using a degree dial when tightening the bolts so no big deal.

28th Mar 2018 11:04 am

BrettKaz

Member Since: 11 Nov 2013
Location: Canberra
Posts: 209

Oops yes I added that at the last minute. Now corrected. Funny (sic) story. My brother and I had been at it for 11 hours and I read the torque spec for the front prop shaft - says x nm and then 90 degrees. So my brother goes "ok then x nm then half a turn" ... I said yes... for some reason. We start tightening and we are both looking at each other going 'heck' that's tight. We get to the last bolt (of 12 I think) and 'snap'. Within 1 milli-second I recomputed the math and though darn ... we went and bought all new bolts immediately.

We both did university math ... not an ounce of common sense between us! so don't ask me for a conversion.

28th Mar 2018 11:56 am

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