XJ XJ8 / XJR ( X308 ) 1997 - 2003

How to open transmission filling bolt ?.

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Old 12-19-2019, 04:28 PM
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Default How to open transmission filling bolt ?.

Hi guys today tried to open the filling bolt couldn't open it its too tight . Should i heat it before open it ? Or spray something?
 
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Old 12-19-2019, 05:07 PM
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You can give it a shot of penetrating fluid, and let it sit overnight, it won't hurt your effort.

Anyways, check out this video...if all your interested in is the fill plug, go to the 16:14 minute mark and watch it from there...
**NOTE: Always use a 6 point wrench when applying torque, especially on equipment that hasn't been functioned in awhile, you'll see why in the video. Also note he keeps applying inward pressure on the hex socket to keep it in the well of the plug for maximum torque and contact application.
**NOTE: I would use the specified fluid by Jaguar, unless someone else on site can say otherwise vs. what is said in the video.

Here's another thread for review (don't skip the link in Post #35), you may heavily consider it before doing this task and once you see the above video... https://www.jaguarforums.com/forum/x...appeal-211002/
 
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Old 12-20-2019, 09:41 AM
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Good to check that you can FILL it before removing the drain or pan complete!!

I sometimes need to use a 'cold-chisel' on an edge to get it to break loose and then replace it with a NEW plug.
You can 'walk' the plug out a little on the edge but don't damage the Allen HEX with the chisel.
 
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Old 12-20-2019, 02:37 PM
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Originally Posted by Highhorse
You can give it a shot of penetrating fluid, and let it sit overnight, it won't hurt your effort.

Anyways, check out this video...if all your interested in is the fill plug, go to the 16:14 minute mark and watch it from there... https://www.youtube.com/watch?v=qL4ZhDlZAF4
**NOTE: Always use a 6 point wrench when applying torque, especially on equipment that hasn't been functioned in awhile, you'll see why in the video. Also note he keeps applying inward pressure on the hex socket to keep it in the well of the plug for maximum torque and contact application.
**NOTE: I would use the specified fluid by Jaguar, unless someone else on site can say otherwise vs. what is said in the video.

Here's another thread for review (don't skip the link in Post #35), you may heavily consider it before doing this task and once you see the above video... https://www.jaguarforums.com/forum/x...appeal-211002/
Thanks for the great video and link . I think i will be able to open it that way .
 
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Old 12-20-2019, 03:06 PM
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I finally watched the video and I hate to disagree with the guy but he really should have ensured that the FILL plug came loose BEFORE he drained the fluid.
Worst case would be that the car would need to go to a repair shop and the car will NOT drive because NO FLUID!!!




I also have found that the pan bottom is NOT an accurate place to measure TEMP. (plastic is a pretty good insulator)
It would take a longer time for the heat to 'soak' through the pan and stabilize the temp on the pan bottom.

I have used WDS/IDS and the non-contact IR thermometer at various places. The most accurate was the fluid cooler OUTLET pipe on the side of the gearbox.
The temps (IDS and IR thermometer) were the closest at the aluminum pipe to the cooler. The return line was obviously cooler.

bob
 
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Old 12-22-2019, 04:52 PM
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Originally Posted by motorcarman
I finally watched the video and I hate to disagree with the guy but he really should have ensured that the FILL plug came loose BEFORE he drained the fluid.
Worst case would be that the car would need to go to a repair shop and the car will NOT drive because NO FLUID!!!




I also have found that the pan bottom is NOT an accurate place to measure TEMP. (plastic is a pretty good insulator)
It would take a longer time for the heat to 'soak' through the pan and stabilize the temp on the pan bottom.

I have used WDS/IDS and the non-contact IR thermometer at various places. The most accurate was the fluid cooler OUTLET pipe on the side of the gearbox.
The temps (IDS and IR thermometer) were the closest at the aluminum pipe to the cooler. The return line was obviously cooler.

bob
For some reason we couldn't open that bolt i think the only way is to heat it little bit then try to open it again . They really built it sealed for life the bolt doesn't move at all !
 
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Old 12-22-2019, 06:33 PM
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Normally the plug is VERY TIGHT from the factory!!
I don't tighten the fill plug as tight upon re-installation. I snug it enough to seal it!!
 
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Old 12-25-2019, 01:48 PM
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Opened it today but we runined the bolt the oil is black and didn't pull the filter yet . I hope the mag 1 low viscosity atf work for the zf5 . The transmission is in bad condition i wouldn't spend more on the zf lg5 hopefully works well and using premium guard filter. Not bad combination for too old transmission. And i would like to see the results
 
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Old 12-25-2019, 03:02 PM
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Couldn't open the oil sump the bolts are also stuck and i was done with the filling plug so just drained 3 liters and then added about 4 liter the transmission was on low fluid . After filling it the oil came out thinly then tightened the filling bolt then shift the transmission from p to all the gears . With hope drive it around heard some grinding noise from the torque converter area then disappeared i noticed smother downshifts . There was little water into the fluid barley can see it on the oil surface when drain it .

Thanks for help guys . Next fluid change will pull that filter too. Thanks again.

 
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