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Location:
Melbourne
Registered:
May 2002
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Gearbox Problem (T50, 4AGE, AE86)
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Fri, 21 June 2002 21:04
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Hey all, had a lil problem with my gearbox...
Driving along (about 2 hours after getting a free flowing exhaust), I came to a set of traffic lights.
Now, taking off, a really fast clicking sound (that got faster and louder as rev's increased) all through 1st, 2nd, 3rd and 5th (but not 4th)
I pulled into a servo and had a poke around, I noticed a seal on the right of the gearbox was just, not connected.
I hopped under to see if I could somehow plug it back in, but it's as if it was previously glued on and had just come off (it's a T50 gbox from a 4ac.) I had the car towed home (for the 5th time this year), and I had a look at a spare gearbox I have (But I don't know what condittion it's in) it's a T50 from a 4age, and this one dosen't have that seal on the middle right hand side (when looking from the front of the bonnet).
I thought that the clicking noise might be just because of a lack of fluid in the gearbox? but that may have already ruined the gearbox. Any feed back or advice would be great right about now as I can't get it to a mechanic till monday.
I've never changed a gearbox before, Anyone know how to rebuild a gearbox and can gimme a breif rundown? I just wanna make sure my spare one will work before I pay a mechanic top dollar to rebuild it if it dosen't need rebuilding or I could do it myself.
And also, this may sound rather stupid but.. do you have to remove the engine to remove and refit a gearbox? I'm guessing yes, but who knows, thanks.
-Grant.
[Updated on: Sat, 22 June 2002 00:13]
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Location:
Tasmania
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sat, 22 June 2002 03:30
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I think you should let your machanic handle it, and take the box out. But watch him do it, and maybe next time you can give it a go.
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Location:
Taree, 4h nth of syd
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sat, 22 June 2002 09:46
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no u dont have to take the engine out of a ae82 to change the gearbox, on a hoist takes about 30mins, they r very easy to do
to rebuilt a gearbox is alittle fun  i havent done one personaly but have seen other mechanics at work do them, u need a fair few special tools to takethe gears of the main shaft, preety tricky, but ive only watched never done one
ummm, i just went outside the check my spare box, im not sure what your talking about, my spare g/box was from a 4age, i have a spare 4ac one as well but its at a mates house, i will try and have a look at it tomorrow or early on in the week
ive never personally heard of the problem u r have, normaly they just have gear syncro problems as they get older
hope this helps alittle bro, if u ever need any advice, give us a bell, i work on toyotas everyday love being a mechanic and working on such a great brand  
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Location:
Melbourne
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sat, 22 June 2002 12:10
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Darola, my car is an ae86 thus rear wheel drive.
So i'd be guessing a totally different gearbox..
But anyway, thanks to the help of a great bloke I played around with it a bit, flushed the gbox and filled it back up with gearbox oil and yes, that's right...
The werid clicking sound was there, came to a dead stop in 1st pretty much and reverse it had the noise but moved.
Also, when I flushed it, I got some gear teeth I think, so I think this gearbox will find my trashcan soon.
Have to break out the spare and get the mechanic to whack it in (if that's under the warranty).
It even makes the clicking noise in neutral.. but it dosen't when i've got the clutch down..
anyone got any ideas? any! no matter how strange, fooz86@iprimus.com.auor just post here, thanks.
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I supported Toymods
Location:
Northern Beaches
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sat, 22 June 2002 14:05
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you can take the gearbox out without taking engine out.
U need to unbolt the tail shaft and take it out of the back of the gearbox. Then unbolt the box and slide it off.
Getting it back on is a bit more fun, lining up clutch, sline etc.
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sat, 22 June 2002 14:57
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So is this clicking noise happening when the clutch is in, or in neutral & in gear?
It's not too hard to pull the g'box out of a RWD 4A-GE. As ribbo said, fairly simple. Support it with a jack when you unbolt the g'box crossmember (scissor jacks aren't much good for this, too unstable) and yeah, keep it supported at the front and slide it back. You'll know when the input shaft is out of the clutch.
As for the stuffed T50, I'll take it off your hands if you want.
Damn, I just realized, you're in melbourne.
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Location:
Taree, 4h nth of syd
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sat, 22 June 2002 17:49
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if its making the nosie at nutral and goes when the clutch pedal is pressed thats a worn thrust bearing, easy to do, gear box out, clutch out and its behind that, its alittle bearing, abit bigger then a 50c piece (i know i cant speel, but it is 3:50am and im not at all straight  )
if u r going to replace it, while the box is out get them to replace the clutch and rear main oil seal, it will save u money in the long run as that way u wont have to take the box off again just to change a seal
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Location:
New Zealand
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sun, 23 June 2002 11:19
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okay. how bout this.
something whines in any gear... even neutral. except when clutch is pressed.
I'm thinking maybe the spigot/pilot bearing in engine.
Karl
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Location:
Taree, 4h nth of syd
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sun, 23 June 2002 12:48
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yes thats the name of it hehehe spigot/thrust bearing
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sun, 23 June 2002 18:13
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The thrust bearing is actually the big sucker that sits in between the clutch fork and pressure plate. Mine whines like a bitch with PMS!
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Location:
New Zealand
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sun, 23 June 2002 20:29
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I was talking about the pilot bearing in the engine which the input shaft goes into.
I didn't realise that the spigot bearing is also known as the thrust bearing.
I was asking for an idea on what is making the whining noise in my car in all gears except when clutch is pressed.
Makes a bit of a clunk when the clutch is released.
Karl
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Location:
Melbourne
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Mon, 24 June 2002 02:01
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well, in my car, it's not a whine, it's a damn loud ticking sound that increases as the revs increase..
It's there in 1st, 2nd, 3rd, 5th Reverse and Neutral (everything but 4th).
When I drained the oil two (2) teeth came out (of the gearbox).
I somehow doubt this would be causing the noise, but I don't know.
My mechanic can't look at my car till friday, which is very very bad for me.
Thanks.
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Location:
New Zealand
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Mon, 24 June 2002 04:27
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well, there's your problem, if it whines but not in 4th. it has to be something to do with the counter/lay shaft.
The teeth could be off the cog on the main shaft, or the cog on the counter shaft that connect the two.
Teeth coming out with your oil is not a good thing.
Karl
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Location:
Melbourne
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Mon, 24 June 2002 04:37
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It's not a whine. It's a ticking (or clicking) sound.
When the clutch is in fully, there's no noise. when it comes out, there's noise.
You could be right there, it'll probably be off the road for a fair while.
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Location:
Aucks NZ
Registered:
June 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sat, 29 June 2002 23:49
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id say having teeth missing has alot to do with the noise aye!
could it also be the input shaft as it is always spinning exept when the clutch is pressed. but then doesn't explain the 4th gear?
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Location:
Melbourne
Registered:
May 2002
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Re: Gearbox Problem (T50, 4AGE, AE86)
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Sun, 30 June 2002 02:02
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Oh well, new gearbox is in, old gearbox is out, and it's all good.
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