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09-25-2016, 01:44 PM | #1 |
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Removing the gearbox backward, it's stuck
Hi guys ,my 39 coupe needs the gearbox looking at ,I,m taking it out from the axle end ,I,v undone everything and dropped the axle etc but with two of us pulling and tugging from the rear it won't move ,never done it this way before so I,m wondering if there is a trick to it ,never had a problem removing from the front before ,any advice would be appreciated .thanks. Jim.
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09-25-2016, 02:08 PM | #2 |
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Re: Removing the gearbox backward, it's stuck
does it move at all? did you take the u-joint cover off? disconnect the brake hose, the speedometer cable? I have had to raise the rear of the trans a little bit for the u-joint bell on the axle to go over the trans crossmember
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09-25-2016, 02:24 PM | #3 |
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Re: Removing the gearbox backward, it's stuck
Is the engine supported at the rear independent of the trans? If not, it will be in a bind.
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09-25-2016, 02:41 PM | #4 |
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Re: Removing the gearbox backward, it's stuck
Yup done all that.
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09-25-2016, 02:56 PM | #5 |
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Re: Removing the gearbox backward, it's stuck
I'm assuming:
The axle is out. All the bellhousing bolts are out, including the ones that go into the sump pan. The gear linkages have been removed. The clutch linkage has been removed. The rear mounts have been removed. The rear of the engine is supported under the sump pan. You have 3" or so of clear space to allow rearward movement. If all the above is correct, there is no reason why the gearbox shouldn't come out. It has to come out toward the rear. If it seems stuck to the engine try pressing the clutch lever. The action of the release bearing should push the gearbox off the engine. If in doubt take some pics and post them up. Mart. |
09-25-2016, 03:22 PM | #6 |
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Re: Removing the gearbox backward, it's stuck
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09-25-2016, 04:10 PM | #7 | |
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Re: Removing the gearbox backward, it's stuck
Quote:
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09-25-2016, 04:14 PM | #8 | |
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Re: Removing the gearbox backward, it's stuck
Quote:
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09-25-2016, 04:56 PM | #9 |
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Re: Removing the gearbox backward, it's stuck
So... what can't you move backwards- the trans or the rear axle assembly?
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09-25-2016, 10:07 PM | #10 |
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Re: Removing the gearbox backward, it's stuck
You have to rotate the transmission to clear the cross member,to slide the transmission out.
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09-25-2016, 10:31 PM | #11 |
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Re: Removing the gearbox backward, it's stuck
We had the same problem when removing the transmission from a '36 Pheaton after the rear was totally disconnected and rolled back away from the transmission. With everything disconnected from the transmission it would not come back because the rear trans mount/rear trans bearing retainer was interfering with the center area of the X member. If we could have raised the back of the engine high enough, the transmission would have come back far enough to disconnect from the engine, but we could not raise the engine high enough. What we were able to do was remove the safety wire and six bolts holding the rear trans mount to the rear of the transmission. After this was off, the trans came back far enough to disengage, and we raised it up and out of the passenger compartment. After the transmission was rebuilt, we reversed the above procedure to put it back in, and bolt it back in place.
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John "Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein Last edited by JM 35 Sedan; 09-25-2016 at 10:37 PM. |
09-26-2016, 12:33 AM | #12 |
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Re: Removing the gearbox backward, it's stuck
Also check the bell housing bolt hidden by the starter drive cover on the right hand side
Lawrie |
09-26-2016, 10:08 AM | #13 |
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Re: Removing the gearbox backward, it's stuck
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09-26-2016, 10:38 AM | #14 |
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Re: Removing the gearbox backward, it's stuck
I see no mention of the clam shell being disconnected, I know it seams obvious but without pictures we're guessing. Also I don't recommend pulling the rear axle and gear box at same time. Pull one at a time.
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09-26-2016, 10:42 AM | #15 | |
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Re: Removing the gearbox backward, it's stuck
Quote:
Last edited by JSeery; 09-26-2016 at 11:29 AM. |
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09-26-2016, 11:07 AM | #16 |
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Re: Removing the gearbox backward, it's stuck
Yes, some clarification please.
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09-26-2016, 11:33 AM | #17 |
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Re: Removing the gearbox backward, it's stuck
Post # 13
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09-26-2016, 12:23 PM | #18 |
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Re: Removing the gearbox backward, it's stuck
Yep, that's the part that confused me! Maybe I'm just easily confused. The whole thread and title say transmission, and then in #13 it says rear axle.
I'll try it another way, is the current difficulty not being able to part the torque tube from the transmission? OK, #8 gives us a clue. Leaving two bellhousing bolts in place so the axle can pull loose. If it were me I would have left the transmission alone until the axle assembly was off. Might not matter, but seems like it might put an undo load on things. Anyway think I see where it's headed now. Last edited by JSeery; 09-26-2016 at 12:30 PM. |
09-26-2016, 01:45 PM | #19 |
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Re: Removing the gearbox backward, it's stuck
Reminds me of "Who's on first"? Hell, I'm STILL trying to figure-out the goal here. Like I tell my son........we need to COMMUNICATE! DD
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09-26-2016, 01:49 PM | #20 |
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Re: Removing the gearbox backward, it's stuck
Cool Hand Luke! "What we have here is a failure to communicate "
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09-26-2016, 02:06 PM | #21 | |
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Re: Removing the gearbox backward, it's stuck
Quote:
I,m looking to pull the rear axle /prop shaft assembly backwards to leave the gearbox attached to the engine with 2 bellhousing bolts holding the two together,then remove the box and lift up into the cab. its the axle end that wont move .....will have another try the weekend ,thanks . |
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09-26-2016, 02:15 PM | #22 |
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Re: Removing the gearbox backward, it's stuck
So the driveshaft is stuck to the u-joint?
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09-26-2016, 02:51 PM | #23 |
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Re: Removing the gearbox backward, it's stuck
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09-26-2016, 03:03 PM | #24 |
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Re: Removing the gearbox backward, it's stuck
Are you using a spring spteader and is the spring clear of the rear cross member.If you lower the diff too far it the torque tube will jam in the hole through the centre of the X brace.Cheers
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09-26-2016, 03:28 PM | #25 |
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Re: Removing the gearbox backward, it's stuck
Same question as GEOFFNZ really, are you trying to pull it back with the torque tube at an angel to the transmission output or is it inline with it?
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09-26-2016, 04:00 PM | #26 |
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Re: Removing the gearbox backward, it's stuck
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I'd put some more bolts back in the gearbox. Just to be safe while struggling with the axle. Speedo turtle not getting snagged up? Shox all out of the way? Clamshell undone and out of the way? The torque tube passes over the central crossmember so will get snagged up if the rear end is lowered too far. To be honest on my 40 I did it the other way round. I left the axle in place and pulled the engine and box as a unit. In my case though, it was the engine I wanted to work on so the situation was different. I can see the point about using a spring spreader to keep the rear spring as flat as possible, it would keep down the angle that the axle needs to be lowered to to clear the crossmember and tank. Good points being made. Mart. |
09-26-2016, 04:44 PM | #27 |
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Re: Removing the gearbox backward, it's stuck
Post #1 " dropped the axle etc but with two of us pulling and tugging from the rear it won't move"
I assume this means that the banjo is down on the ground (or close to it) with the driveline still attached to the trans. I almost made this same mistake a couple weeks ago. You need to jack up the banjo till the spring just clears the cross member and the rear diff will just roll right back.
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09-27-2016, 03:51 AM | #28 |
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Re: Removing the gearbox backward, it's stuck
Thanks guys, I will try to get it as level as poss,I,v got a spring spreader,might be worth a try. I think maybe a mistake I made was myself and my sone doing this job late afternoon after a morning of hard building work so was knackered when we started it ,trying again Saturday early and fresh,thanks again.
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09-27-2016, 06:59 AM | #29 | |
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Re: Removing the gearbox backward, it's stuck
Quote:
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09-27-2016, 09:58 AM | #30 |
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Re: Removing the gearbox backward, it's stuck
A friend (non v8)came over today and we got it nice and straight and eventually it slid out yeeees, the problem now is the gearbox slides back but not far enough,the left shoulder of the gearbox housing is against the gearbox cradle part of the chassis ,the universal joint is fixed to the gearbox drive shaft ,I was expecting it to move with the prop shaft ,I,m looking to undo the six bolts that hold the rear gearbox support but the U.J won't slide off the drive shaft ,I don't want to give it too much force in case I,m doing it wrong ,how can I get the U J off the drive shaft ? Thanks
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09-27-2016, 10:02 AM | #31 |
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Re: Removing the gearbox backward, it's stuck
We call it gearbox ,you call it transmision......in case it gets confusing again .
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09-27-2016, 10:53 AM | #32 |
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Re: Removing the gearbox backward, it's stuck
Well, I guess we don't need any pictures now. The UJ is held to the transmission splined output shaft with a heavy washer and bolt right up through its center.
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09-27-2016, 10:54 AM | #33 |
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Re: Removing the gearbox backward, it's stuck
9/16" socket on a 3/8 drive extension, up the middle of the UJ. But (admittedly I've never done this) I don't think the rear carrier has to come off. People above have mentioned the gearbox needs to be rotated somewhat to get it out.
Mart. |
09-27-2016, 11:10 AM | #34 |
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Re: Removing the gearbox backward, it's stuck
The two alternatives are.... raise the rear of the engine, with trans attached, so that rear trans mount clears the X member enough to come back and disengage from engine, or remove the rear trans mount and this will allow the trans to come back and disengage enough to come up and out.
This is basically the same thing I said in post #11.
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09-27-2016, 12:17 PM | #35 |
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Re: Removing the gearbox backward, it's stuck
Never knew about the centre bolt up the U J ,many thanks guys ....good ol Ford Barn,
always reliable,couldn't have got this far in the hobby without it. Ready to start restoration of my 37zephyr coupe ,I,v had it sitting here for 28 years ...that's gonna need some advice from you guys...oh yes. |
09-27-2016, 03:59 PM | #36 |
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Re: Removing the gearbox backward, it's stuck
See post# 10 also
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09-28-2016, 07:27 AM | #37 |
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Re: Removing the gearbox backward, it's stuck
on the 39 & 40 fords it is some times nessary to losen the bolts near the tunnel & jack or pry the floor up to clear the torque tube bell as the bell on the torque tube hits it
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