 | Home > Series Land Rovers > Removing 109 6cylinder head |
 
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5834   
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After removing 20 odd bolts, we think we have them all. The head is still firmly attached (not run for many years and engine appears seized)
Any tips on removing a stubborn head? Also, any ideas on the size of the nut for the bottom pulley? 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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15th May 2017 10:12am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17307 
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It's a long while since I took the head off one of these! The 1.6 and 2.0 four cylinder, and 2.6 six cylinder IOE engines are essentially the same.
As I recall all the head bolts and studs are obvious, so once the inlet manifold and rocker shaft is off and the head bolts removed the head should be free. There is an external oil pipe at the rear of the head which sometimes gets overlooked. If the head is stuck you could try giving it a good biff with a hardwood block on a solid area. I'm afraid I can't offhand remember the size of the bottom pulley retaining bolt, but it will probably be a Whitworth/BSF sized socket. I know that I have a 3/4" drive socket that fits, if you could measure the AF dimension with reasonable accuracy I can translate it to the approprate tool size for you. It's a cracking engine when in good condition, by the way, exceptionally smooth and by the standards of the time quite powerful. Also quite scarce now. |
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15th May 2017 10:43am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5834
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Cheers for the reply.
The rocker shaft is still in place so maybe this is the key bit we missed.? 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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15th May 2017 10:48am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5834
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A picture of the head
 Click image to enlarge 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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15th May 2017 10:50am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17307
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Goodness, it shows how long since I messed with one of these, I had fogotten that the rocker shaft runs directly in the head.
You've removed the nuts on the two studs that hold the cover on, I presume? |
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15th May 2017 11:17am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5834
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The ones circled in yellow?
Click image to enlarge 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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15th May 2017 11:26am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17307
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I was meaning these (below), I *think* they go right through the head.
I have the 2.6 WSM at home, I'll have a look for further clues this evening. Click image to enlarge |
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15th May 2017 11:35am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5834
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Ahhh right. We thought those are just studs for the rocker cover.
Appreciate if you can have a look in the WSM cheers 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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15th May 2017 11:37am |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
ideas on the size of the nut for the bottom pulley 1``13/16 socket deep I think
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15th May 2017 11:46am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17307
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You're right and I am wrong, they don't hold the head down. You might find these links useful:- http://www.landroverweb.com/Pdf-files/Manu...Part_2.pdf http://www.landroverweb.com/Pdf-files/Manu...Part_3.pdf The 2.6 engine starts on page 50 of the part 2 PDF and continues in Part 3. Both of these links are from here:- http://www.landroverweb.com/landrover/pdf-land-rover-manuals/ ... which has a useful selection of PDF manuals. It seems as though you're head may simply be stuck, in which case the usual techniques of biffing with a wooden block, lifting with an engine crane under the thermostat housing, or lift and biffing in combination, may be the recourse. |
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15th May 2017 12:11pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5834
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Looking at the WSM. I think we have missed out possibly 2 bolts, the ones circled in yellow which look to go into the block as well, which if we have, wont help much! 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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15th May 2017 12:39pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5834
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Finally got the head off just the three middle rocker bolts holding the head in place.
Cheers BW for the link to the PDF WSM. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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26th May 2017 8:18pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5834
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The cylinder head will be making progress over the water to a new life in Texas! 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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9th Jun 2017 1:07pm |
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