Replaced the A drum and pressure regulator. Reinstalled the trans and putting fluid in. So far have got 6 lts in so far. While running and shifting through gears it doesn't seem to be going into gear. The tach doesn't drop when put into either drive or reverse. Tomorrow I'll get the other 5 or so lts in. Is the reason it's not going into gear because it's still too low on fluid? It appears that the shifter is connected and working at the trans. Yes I have done a hard reset.

 

Fill the transmission until oil comes out of fill hole. If the car is on jack stands it needs to be level. Start it up and run it through the gears. After reaching operating temperature top off the fluid level with the engine running. Reinstall plug before shutdown.

Good luck.

 

Any chance of there being a air pocket/bubble in the trans similar to the cooling systems?

 

No. After you run it the pump should fill all pockets. Is it still not going into gear after topping the oil level?

 

Nope still a paperweight. I have a few questions and some observations. I'm getting pretty frustrated at this point. Had the car running and on jack stands and even. Couldn't put any more trans fluid in. Right now up to about 6 qts. We did drain the torque converter also. Also after about 15 minutes or more the trans pan didn't get any hotter. We turned it off talked then turned it back on. shifted through the gears and never acted like it wanted to go into gear. Question could my pump have gone out at the same time? I changed the pressure regulator would that be an issue? Really am stumped at this point. Checked all electrical connections. What else could my problem be? Also after running and sitting on the ground we got the P1722 code, gearbox fault. Those are the only codes it gave... Please help I'm bummed to no end.

 

There is the possibility that you might have damaged the pump on reinstall. Maybe somebody else has a better idea but if I was in you situation I would remove one of the transmission cooler lines, remove the fuse for the fuel pump and then crank the engine for about 10 seconds and see if oil is being pumped.

 

Having damaged the pump while installing the transmission, I know how easy it is to break the two ears that drive the pump. The fact that you're unable to put more than 6 qts. in with the engine running indicates that the pump is not working.

I would take the transmission back out, remove the torque converter and see if the pump drive is broken.

 

Not knowing much about his. Will I need to replace or repair? I don't see many of these on ebay. Is there a rebuild kit or should i sart looking for new? Any help will be greatly appreciated.

 

All you need to do is remove the bellhousing/pump assembly just as you did when you repaired the A drum. I have a spare transmission with a bad A drum that I was going to repair and sell. I can just sell you the bellhousing/pump assembly. If you are interested send me a PM.

 

Bob, you are the number 1 source for saving people from themselves. Not saying that Larney did the same thing that I did, but it appears likely.

 

Haven't taken the bell housing off but from this it looks like the ears are dislodged(broken).

More to follow.

 

UPDATE:::: Replaced the trans pump and was able to add almost 2.6 gals of trans fluid. Good news I got my reverse back. Bad news still no forward gears.
If I rev up enough it will kick into first(CLUNK) the gear box fault P 1722.
So I'm at a loss for were to go now. Replaced the A drum(original problem) put in new pressure regulator. Still at square one. HELP!!! Any help will be greatly appreciated.
Also found this little item on the floor. I don't think it came from the trans but I can't be sure. Any ideas?

 

Sorry for your troubles.
I had one A drum I rebuilt that I had the same problem. It was as if I didn't even repair the A drum. I took it back out and there was too much clearance /play in the A drum clutch pack. I had to add ,025 and it fixed the problem. There is also the possibility of damaging an o ring on installation.
There might be other opinions but I think it is take it back out again.

 

Are the clutches supposed to be really tight? Should you need something to compress them before the ring goes in? Mine wasn't hard to put back together. Did you put a spacer in? What and where did you get it? Does it go in next to the snap ring? Sorry about all the questions just stumped.

 

There should be a little play in the clutch pack after the ring is in. I don't recall the amount of play will need to check ZF manual. What I did to add to the clutch pack was add another of the wavy disc that is at the bottom of the pack. Did you put new o rings in or did you reuse the old ones?

 

Mostly new ones. That's one thing we're going to check.

 

What you're holding in your fingers might be a pressure relief valve (???) that goes on the D/S towards the bottom of the transmission. There's a bolt that you remove and there should be a valve and a spring inside. Just food for thought.

BobRoy, I'm guessing that you have to use feeler gauges for measurements? Also, you mentioned a manual... Can you purchase a repair manual thru ZF? I also want to get a manual for the Mercedes gearbox in my XJR. How would I go about getting a manual for that?

 

Addicted2boost, I believe the ZF manual is on our site somewhere but I find Gus's site, jagrepair.com. much easier to locate. Here is the link.

http://www.jagrepair.com/images/Auto...r%20Manual.pdf

Before I found this link when I was new to these forums I purchased the actual manual online by doing a search for ZF5hp24 manual. I have had no reason yet to work on the XJR-XKR transmission yet so I haven't searched for it yet.

 

Would that pressure relief valve have come out while installing a new pressure regulator? Otherwise not sure how it came out. we didn't remove any bolts other than what was needed to take trans out, replace A drum and pressure regulator(trans pan,half of valve body) .

 

Look at page 2.7/1 in the repair manual linked in post above. You can see the valve I think he is talking about. What I can see it doesn't look like the piece you showed.