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Hi, I have a 2011 xf 3.0 deisel which has done 110k, been reading abit about servicing the gearbox. I think it's a 6HP26 that's in my model and wondered if anyone had done this job themselves and if there were any tips that might help me. From what I have gathered, it looks like it's due at 112k or ten years and both are imminent on my car. Thought I might do it myself. Got a bit of time on my hands right now 馃槈Seen a couple of YouTube videos and it doesn't look that hard.love to hear you experiences and comments??
Thanks
Colin.
 

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The 112k/10yrs figure is for replacing the cambelt.
Jag say the oil in the gearbox is for life, not many believe this & often change the oil after 60/70k. If you change the oil yourself you need to measure exactly what comes out, so you know how much you need to refill to the correct level. The sump you remove contains the filter, so you need a new sump. You will not get all the oil out by draning, as there will be a large amount retained in the torque converter. Some companies offer a flushing service, so you know all the oil is replaced.
 

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I believe the oil has to be warmed to a certain temperature as well before filling and is there also something about some procedure going through the gears? I'm not sure but it sounds more hassle than I'm willing to do, so for a few hundred quid labour mine is going into the Jaguar indy once COVID-19 has buggered off.
 

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Oil change is not that hard on the ZF gearboxes, but before you drain the oil , please make sure you can OPEN the fill plug.
I ended cutting a Hex key to be able to squize it between the gearbox and the car body. On BMW there is a bit more space but on jaguar there is not so much.

Get at least 8 liters of oil.
When you drain the oil , let it drain as much as you can.
Then START the engine and let it idle for 5-10 sec, no more.
Drain some more.
Start car and idle for 5 sec or so.
Drain some more.

This will "spit" some more oil out of the torque converter.
If you want to drain even more, you will have to remove the valve body and push some air trough the oil converter suction hole (recommended if you also want to change the bridge seal between gearbox and valve body).

When refilling , follow the procedure for filling and move the gearbox trough gears so it sucks some oil in torque converter and oil cooler then fill some more while car at idle.
Not complicated , will just take some time.
 

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Are you not supposed to also change the sump pan which houses the filter?
 
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Got mine done in the north west in Leigh they have a fancy machine 拢400 ish it was a while ago.

The oil itself is pretty expensive?

I thought about trying it but like they say lots of it is in the torque converter so its not 100% change

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Oil change is not that hard on the ZF gearboxes, but before you drain the oil , please make sure you can OPEN the fill plug.
I ended cutting a Hex key to be able to squize it between the gearbox and the car body. On BMW there is a bit more space but on jaguar there is not so much.

Get at least 8 liters of oil.
When you drain the oil , let it drain as much as you can.
Then START the engine and let it idle for 5-10 sec, no more.
Drain some more.
Start car and idle for 5 sec or so.
Drain some more.

This will "spit" some more oil out of the torque converter.
If you want to drain even more, you will have to remove the valve body and push some air trough the oil converter suction hole (recommended if you also want to change the bridge seal between gearbox and valve body).

When refilling , follow the procedure for filling and move the gearbox trough gears so it sucks some oil in torque converter and oil cooler then fill some more while car at idle.
Not complicated , will just take some time.
Have you done this?
How much oil could you get out of it roughly?
 

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just for information, i had my transmission fluid changed today in my 59 3.0d xf at a jaguar specialist, 拢174 . no mention of a sump on the receipt.
seems the oil is quite pricey though.
I can't believe they changed the fluid without replacing the filter, that's just stupid. Phil
 
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Got mine done in the north west in Leigh they have a fancy machine 拢400 ish it was a while ago.

The oil itself is pretty expensive?

I thought about trying it but like they say lots of it is in the torque converter so its not 100% change

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I can't believe they changed the fluid without replacing the filter, that's just stupid. Phil

The machine they used was most likely a power flushing machine. ZF's latest recommendation is that this type of flush is not done as it's been shown to cause failures later on.

It's not to say the sump wasn't changed, but at that price then it seems to cheap for them to have changed it.

Agreed it's a bit daft, but better than nothing I guess.
 

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jlr consider it to be a sealed for life gearbox? , i鈥檓 not aware that it breathes or ingests dirt from external sources like an engine, plus given the change of sump at least doubles the cost i鈥檓 happy that i鈥檝e done my bit to prolong the life of the car until i鈥檓 ready to change it.
i suppose in my mind viscosity was more important than cleanliness
 

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Ignore what Jaguar says as it's quite simply wrong. The manufacturer of the gearbox recommends it's changed at much more regular intervals.

You're right in that it doesn't have any combustion gases like an engine sump. But it does still have components that wear over time and particles of this will get carried round the oil/fluid.

Not to mention the general degredation of the fluid due to heat and age.

Changing it is better than nothing, but you've got to take the sump off to drain the fluid properly and it seems a bit pointless to put the same one back one (with integral filter unit).
 

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to think that an oil does not deteriorate is very optimistic. I did the job myself, it's easy, with the filter also comes the manual of the procedure. but I don't think I would do it without being able to lift the car on the bridge.
 

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One of the pitfalls appears to be the filling plug being extraordinary tight and you should check it can be freed off before starting anything else. If you drain it and then can't get the filling plug out... You're in a bit of a pickle.

Agreed, I don't mind doing some jobs myself, but I draw the line at laying on my back under the car.
 

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Rather random 1st post reply to a 3 year old thread..... 馃し鈥嶁檪锔
 

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Rather random 1st post reply to a 3 year old thread..... 馃し鈥嶁檪锔
Yeah, was a bit of a thread revival! lol

I suppose it's worth pointing out caithness1949 that the OP commented that his transmission is the 6HP26, and according to ZF I believe the temperature should actually be between 30-35掳C?

 
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