XK8 convertable roof fluid....
XK8 convertable roof fluid....
Author
Discussion

NikB

Original Poster:

1,834 posts

291 months

Monday 10th November 2003
quotequote all
Has anybody got any experience of changing the hydraulic fluid in the XK8's roof mechanism? A friend has an early XK8 nad is having problems with the roof and thinks that changing the fluid is the solution......

Thanks in advance

Nik

esv683

109 posts

293 months

Tuesday 11th November 2003
quotequote all
I have the same problem on 1998 xkr i am told it is a common fault something to do with the type of oil used. Perhaps a latent defect from jaguar as they now use a different type of fluid.?

NikB

Original Poster:

1,834 posts

291 months

Friday 14th November 2003
quotequote all
I have got hold of the Jag technical bulletin for this problem. It looks like the fluid either evapourates or turns into a gel hence causing the problems. The solution is to flush the system and put different fluid in.

If you want a copy of the bulletin let me know I'll mail it to you.

Cheers

Nik

Davel

8,982 posts

284 months

Friday 14th November 2003
quotequote all
Would you mind letting me have a copy?

No problems yet, but it'll be useful to know.

Ta

NikB

Original Poster:

1,834 posts

291 months

Monday 17th November 2003
quotequote all
Hi Guys,

Have mailed you both about the tech bulletin on doing this job.

We did this on my friends XK yesterday and it was quite an easy job, and it made a hell of a difference.
The problem is that the hydraulic fluid in the latch mechanism turns into gel because of the heat it is subjected to from the roof. once you have cleaned the latch mechanism out and flushed the system it works a treat. Whole job took about 3 hours.

Cheers

Nik

esv683

109 posts

293 months

Monday 17th November 2003
quotequote all
Nik any chance of resending info to steve@jamesarnold.fsnet.co.uk
is the fluid called pentosin. if so where can i get it & how much ?

regards steve

Davel

8,982 posts

284 months

Tuesday 18th November 2003
quotequote all
Thanks for the e-mailed brochure.

Might be very useful!

NikB

Original Poster:

1,834 posts

291 months

Tuesday 18th November 2003
quotequote all
Steve,

Just resent, it bounced back the first time.

Pentosin is the stuff, Jag charge about £28/litre, but my friend managed to source it a lot cheaper, but to do that had to buy a box full. Give me a shout when you want to do the job, I'll put you in contact with him.
I think you need about 2 litres to do the job.

Cheers

Nik

lux_r

26 posts

269 months

Tuesday 20th January 2004
quotequote all
Please would one of you forward that bullitin to me

Thnaks

legin

49 posts

276 months

Monday 29th March 2004
quotequote all
Guys,
My father-in-law has just bought an XK8 and is having problems with slow/non operation of the roof catches.

Does this sound like the problem you were having with the fluid?

If so, I'd really appreciate it if you could you email me with the info.

Thanks.................

apprentice

1,219 posts

286 months

Monday 29th March 2004
quotequote all
Replacing the fluid is not always the solution - the pipes can become sufficiently furred-up that the only effective long term solution is replacement of the hydraulic pipes.

NikB

Original Poster:

1,834 posts

291 months

Wednesday 31st March 2004
quotequote all
Chaps,

I have had a few requests for this document, but it is 4.36M so it keeps bouncing from mail accounts. I have posted it on the web here for you to download at your leisure!

www.petrolart.com/files/Roof_instructions.pdf

legin

49 posts

276 months

Friday 2nd April 2004
quotequote all
Thanks Nick

DeeJ

2 posts

267 months

Tuesday 11th May 2004
quotequote all
A bit long winded this one, but worth it for anyone with a malfunctioning XK8 roof;

Firstly, A HUGE THANK YOU to Nik for persevering in providing the technical bulletin on this.

When my roof failed to open and I approached a Jag main dealer, they told what the problem was likely to be, that it wasn't a major job and would cost £200-300+ to fix. I challenged this, believing that as Jag had mis-specc'd the fluid, it should be a 'recall' type job - ie, that Jag should pick up the tab. They refused.

I then came across Nik's message re the technical bulletin, got sight of it and noticed the instruction to Jag dealers to carry out the work "This should be performed on a customer complaint basis only..."

Not having the basic technical nous to do the work myself and being pompous enough to believe I shouldn't have to, I spoke to Jag Customer Services who, after not too much resistance, agreed to pay 100% for the work. A week later, I have a sunburnt forehead = A result!

I'd recommend that anyone who is in a similar position should give Jag a call on 02476 203834 and don't take no for an answer.

Good Luck,
Darren

VICTOR GOOD

2 posts

252 months

Thursday 16th June 2005
quotequote all
Help - am getting the same problem on my 2001 XKR - hood very slow to close - sometimes gets half way and stops.

Advice please - cant access the website as the link wont connect

jonscz

1,211 posts

263 months

Friday 17th June 2005
quotequote all
Hi all, you may like to trawl through this link and pick out the relevant sections....this is an excellent forum for things like this..... Hope it helps, Cheers, Jon http://forums1.roadfly.com/jaguar/forums/xk8/search.php?st=changing+convertible+roof+fluid&ps=20&m=natural&o=default

Nigel W

1 posts

240 months

Tuesday 6th June 2006
quotequote all
Hi Nik

Any chance you could send me a copy of the technical bulitin relating to the XK8 roof problems, unfortuatley the one you posted is no longer available

Cheers

Nigel

A5 XKC

30 posts

245 months

Wednesday 7th June 2006
quotequote all
Have had similar problems and sorted, for info only the oil required is Pentosil CHF 11S, if you buy from Jag £32 same from BMW £10, massive cost difference so save yourself some money

AtlantaJag

1 posts

240 months

Friday 30th June 2006
quotequote all
My 2001 XK8 convertible sprang a hydraulic oil leak under the roof latch, dripping down through the ultrasonic sensor screen, etc. Very messy & also disturbing given my car is pampered (only 33k miles). I do drop the top a lot here in Atlanta since the weather is ideal for convertibles. But come on! The latch hydraulics ought to have 'life-of-the-vehicle' durability. (Fortunately, I am still under Jaguar extended factory warranty through 2007.) I remember recently reading about an XK8 owner who had this same leakage, and he contemplated re-crimping the braided hose in the windshield frame. Is this a Teflon hose or a braided rubber hose? The fluid appeared greenish in color. Any Technical Service Bulletins I can read on this?

A5 XKC

30 posts

245 months

Saturday 15th July 2006
quotequote all
Have you thought it could be a leaking roof cylinder, have had to change both sides on mine in last 12 months, way to tell, top up fluid if level goes down substantially in a few weeks or you see fluid below rear wheels then definately cylinders, cost about £120 each to replace, self fit relatively straight forward. If you want more info I will be happy to assist. Fluid buy from BMW CHF 11S £20/liter cheaper than Jag. Good Luck