Toyota - Remove wheel hub
Discussion
Quick question for any mechanic types...
Dad is in process of replacing pads on the back of thier Toyota previa. Whilst removing the wheel one if the 5 wheel bolts has fallen inside the hub. So, the hub has to be removed to retrieve the bolt!
Removing the hub is turning out to be a major ball- ache. The hub moves about but won't come off! If anyone can explain how to remove the hub i'd be grateful.
Cheers, Simon.
Dad is in process of replacing pads on the back of thier Toyota previa. Whilst removing the wheel one if the 5 wheel bolts has fallen inside the hub. So, the hub has to be removed to retrieve the bolt!
Removing the hub is turning out to be a major ball- ache. The hub moves about but won't come off! If anyone can explain how to remove the hub i'd be grateful.
Cheers, Simon.
If it's like most discs, there'll be a big Philips screw between two of the holes for the wheel studs that's holding it on. He'll need to unbolt the caliper and swing it out of the way before the disc will pull off.
(Hopefully there's more to the problem than that, otherwise I'd question whether it's really a good idea for him to be working on brakes!)
(Hopefully there's more to the problem than that, otherwise I'd question whether it's really a good idea for him to be working on brakes!)
The hub doesn't gave a Phillips screw on it. There's the 5 stud holes, and two smaller holes that have some kind of metal plate behind them. The design is unusual; the hub and the disc are one and the same part! We're no stranger to mechanical challenges, having done far more complicated stuff on the past, but this has us scratching our heads!
Simbu said:
The hub doesn't gave a Phillips screw on it. There's the 5 stud holes, and two smaller holes that have some kind of metal plate behind them. The design is unusual; the hub and the disc are one and the same part! We're no stranger to mechanical challenges, having done far more complicated stuff on the past, but this has us scratching our heads!
Are the two smaller holes threaded? if so then drive some bolts into them and they will push the hub off.Simbu said:
They are, and this has been tried. It worked to a point, but the hub just won't come off. Its like something is jamming the hub on, or there's a release mechanism we can't find.
If it is a hub and a disk combined, do you mean it has brake shoes for the handbrake in the drum/hub as well as pads for the rear disk brake? If so, it could be the drum brake shoes are holding the unit on. Try releasing the handbrake and unwinding the tension on the brake shoes.Tunku said:
If it is a hub and a disk combined, do you mean it has brake shoes for the handbrake in the drum/hub as well as pads for the rear disk brake? If so, it could be the drum brake shoes are holding the unit on. Try releasing the handbrake and unwinding the tension on the brake shoes.
Yes, there is a handbrake inside the hub - probably should have mentioned that! The handbrake has always been off as the hub wouldn't move at all otherwise. Please can you explain unwinding the tension from the brake shoes? I'm not over at the parents' any more so can't look to see what you mean.Thanks all for the replies so far!
Simbu said:
Tunku said:
If it is a hub and a disk combined, do you mean it has brake shoes for the handbrake in the drum/hub as well as pads for the rear disk brake? If so, it could be the drum brake shoes are holding the unit on. Try releasing the handbrake and unwinding the tension on the brake shoes.
Yes, there is a handbrake inside the hub - probably should have mentioned that! The handbrake has always been off as the hub wouldn't move at all otherwise. Please can you explain unwinding the tension from the brake shoes? I'm not over at the parents' any more so can't look to see what you mean.Thanks all for the replies so far!
Little serrated wheel that you can move with a screwdriver, "clicking" it will move the shoes in or out, experimentation will reveal which way to go.
If that's the answer, remember to reset this when you have refitted the hub.
You'll need to look in owners manual to find out how many handbrake lever notches are the recommended setting for handbrake fully on.
Edited by WhoseGeneration on Saturday 20th November 17:28
WhoseGeneration said:
Simbu said:
Tunku said:
If it is a hub and a disk combined, do you mean it has brake shoes for the handbrake in the drum/hub as well as pads for the rear disk brake? If so, it could be the drum brake shoes are holding the unit on. Try releasing the handbrake and unwinding the tension on the brake shoes.
Yes, there is a handbrake inside the hub - probably should have mentioned that! The handbrake has always been off as the hub wouldn't move at all otherwise. Please can you explain unwinding the tension from the brake shoes? I'm not over at the parents' any more so can't look to see what you mean.Thanks all for the replies so far!
Little serrated wheel that you can move with a screwdriver, "clicking" it will move the shoes in or out, experimentation will reveal which way to go.
If that's the answer, remember to reset this when you have refitted the hub.
You'll need to look in owners manual to find out how many handbrake lever notches are the recommended setting for hanbrake on.
Back to basics question, I don't know what this Toyota hub looks like - but where exactly has this nut fallen?
And if the hole is big enough to drop a wheel nut through, is it big enough to get a bit of bent bar through, onto the nut - then magnetise the bar (hold an old speaker against it or something) and then hook the nut out?
Would be easier than trying to pull the hub apart especially if you're not sure how it does come off!
And if the hole is big enough to drop a wheel nut through, is it big enough to get a bit of bent bar through, onto the nut - then magnetise the bar (hold an old speaker against it or something) and then hook the nut out?
Would be easier than trying to pull the hub apart especially if you're not sure how it does come off!
Simbu said:
Tunku said:
If it is a hub and a disk combined, do you mean it has brake shoes for the handbrake in the drum/hub as well as pads for the rear disk brake? If so, it could be the drum brake shoes are holding the unit on. Try releasing the handbrake and unwinding the tension on the brake shoes.
Yes, there is a handbrake inside the hub - probably should have mentioned that! The handbrake has always been off as the hub wouldn't move at all otherwise. Please can you explain unwinding the tension from the brake shoes? I'm not over at the parents' any more so can't look to see what you mean.Thanks all for the replies so far!
Thanks again everyone for the replies.
Just spoken on the phone to Dad, the rubber plug has been located and removed from the backplate, but the adjuster hasn't been found yet.
There's not a large nut in the middle, we'd definitely have undone it if there was
One of the stud bolts has fallen into the hub, not a nut.
For what good it might do, i grabbed a picture before i left. You can see the hole where the stud bolt should be, and it's not clear but there's two smaller holes too. They are threaded and we have tried driving bolts into them, and we got to a point, but dad was concerned about the force we had to give them to get them any further. Can we damage anything inside the hub by forcing them further?
Just spoken on the phone to Dad, the rubber plug has been located and removed from the backplate, but the adjuster hasn't been found yet.
There's not a large nut in the middle, we'd definitely have undone it if there was
One of the stud bolts has fallen into the hub, not a nut.
For what good it might do, i grabbed a picture before i left. You can see the hole where the stud bolt should be, and it's not clear but there's two smaller holes too. They are threaded and we have tried driving bolts into them, and we got to a point, but dad was concerned about the force we had to give them to get them any further. Can we damage anything inside the hub by forcing them further?
Edited by Simbu on Saturday 20th November 17:57
Simbu said:
Thanks again everyone for the replies.
Just spoken on the phone to Dad, the rubber plug has been located and removed from the backplate, but the adjuster hasn't been found yet.
There's not a large nut in the middle, we'd definitely have undone it if there was
One of the stud bolts has fallen into the hub, not a nut.
For what good it might do, i grabbed a picture before i left. You can see the hole where the stud bolt should be, and it's not clear but there's two smaller holes too. They are threaded and we have tried driving bolts into them, and we got to a point, but dad was concerned about the force we had to give them to get them any further. Can we damage anything inside the hub by forcing them further?
I think you may find a large nut under that dust cover in the centre of the hub.Just spoken on the phone to Dad, the rubber plug has been located and removed from the backplate, but the adjuster hasn't been found yet.
There's not a large nut in the middle, we'd definitely have undone it if there was
One of the stud bolts has fallen into the hub, not a nut.
For what good it might do, i grabbed a picture before i left. You can see the hole where the stud bolt should be, and it's not clear but there's two smaller holes too. They are threaded and we have tried driving bolts into them, and we got to a point, but dad was concerned about the force we had to give them to get them any further. Can we damage anything inside the hub by forcing them further?
Edited by Tunku on Saturday 20th November 18:03
I've been reliably informed the centre is not a dust cap. The setup is very similar to what's going on in this thread: http://www.toyotanation.com/forum/showthread.php?t...
As you can see, the centre part does not go anywhere when the hub is removed. So the problem we've got now i suppose is finding the adjuster for the drum brake, so we can adjust them enough to lift the hub away.
As you can see, the centre part does not go anywhere when the hub is removed. So the problem we've got now i suppose is finding the adjuster for the drum brake, so we can adjust them enough to lift the hub away.
Simbu said:
I've been reliably informed the centre is not a dust cap. The setup is very similar to what's going on in this thread: http://www.toyotanation.com/forum/showthread.php?t...
As you can see, the centre part does not go anywhere when the hub is removed. So the problem we've got now i suppose is finding the adjuster for the drum brake, so we can adjust them enough to lift the hub away.
I reckon after seeing the pictures, you are right. Remember, a worn drum will have a lip, and if it does, it can take quite an effort to remove due to the brake shoes binding on the outside edge. Try hitting the drum from the inboard side of the brakes with a drift and hammer all around the circumferance of the drum.As you can see, the centre part does not go anywhere when the hub is removed. So the problem we've got now i suppose is finding the adjuster for the drum brake, so we can adjust them enough to lift the hub away.
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