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cv joint and ball joints


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#1 il-barba

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Posted 01 July 2007 - 03:44 PM

i have taken the hub off. now i need to remove the cv joint and i read that i do it with a hammer or the sort. PS i have never driven the car yet so dont know if cv joint clicks or not :shifty:

1. do i need to give the hammering on the part that seems like a cage or the outer most part? there is a little bit of play on the cv joint is that normal?

2. i need to know which ball joint is knackered. the upper one has some up and down play and the shaft rotates. while the lower ball joint is hard to move (maybe lack of grease) but has no play. are they both bad?

3. when i used to turn the driveshaft on neutral the shaft goes hard to turn every now and then. but it is not every revolution, sometimes its more frequent. i thought they were the bearings, but they seem fine now so i ruled them out

4. also i need to remove one broken stud which has no thread on it. do i just leave it soaking in penetrating oil and hammer it?


excuse me for taking long, but im doing this all by myself and ive never done any front wheel drive cars before

#2 il-barba

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Posted 01 July 2007 - 09:24 PM

can someone help me?

#3 il-barba

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Posted 03 July 2007 - 12:42 PM

i would like to thank everyone for their help. the second thread i open and no one answers. i can understand it

#4 dklawson

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Posted 03 July 2007 - 01:57 PM

Sorry that no one replied earlier.

First, the CV joint is held to the hub assembly by the big castle nut under the wheel cover. It's general practice to loosen and/or remove that nut before removing the hub from the car because of the torque required. Once you have the CV off the hub (presumably with the driveshaft attached) you can disassemble things. From memory (and I think this was on the Mini and not another car) I have taken the driveshaft with CV to a vise and set the jaws apart to 'just clear' the shaft diameter. Then grasping the driveshaft I pull it downward (rapidly) through the vise until the CV bottoms out on the vise jaws. Typically this pops the CV off the driveshaft. It may take a couple of whacks like this to remove the joint. Once the driveshaft is out of the way you can rotate the CV cage to remove the internal bits.

CV joints are supposed to have axial play, not radial. If you can push/pull the CV in and out to and way from the hub, that's normal. If you can hold the castle nut and twist the driveshaft and have radial play under torsion, that's bad. When CV joints are failing (while driving) this torsional radial play can be heard as a rapid tick-tick-tick when you're pulling away from a stop with the wheels turned. Your finding the driveshaft harder to turn at certain places with the wheels turned may or may not indicate significant wear. If it's at the limits of wheel travel with the steering wheel at full lock it may just indicate you're running the CV in an area that isn't "broken in". Focus more on the amount of radial, torsional play in the joint with the wheels pointed straight ahead.

Up and down play of either ball joint indicates wear. One of the two (forgive me... I don't remember which) is also spring loaded. You remove the spring while determining how many shims are required for setting the correct clearance... then replace the spring before the final fitting of the shims and torquing the big nut. by the way, you need a 1-1/2" Deep socket for the ball joints along with a torque wrench capable of going 70 to 80 ft-lb. Don't assume that play means either ball joint is bad. Disassemble the joints and examine the components for wear. Bad scoring would dictate replacement. If that's not seen, go through the clearance setting procedure (with the shims). If you can take the play out by reducing the shim count, by all means re-use the parts.

On disk brakes the wheels studs are simply pounded back through the hub for removal. Oil them if you like but they are a press fit with splines so I don't think you'll find the oil necessary. Fitting the new stud is the reversal of the process but you'll find no good way to press or hammer them in from the back of the disk. What I've done is to fit the road wheel and lug nut and torque the lug nut to draw the stud in to the hub. When you do this it's necessary to re-torque that stud frequently during the first weeks of use as the stud will continually work its way "forward" into the hub as you drive. Keep the nuts tight.

If I've failed to address any of your points, please post again.

Edited by dklawson, 03 July 2007 - 01:58 PM.


#5 il-barba

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Posted 03 July 2007 - 02:48 PM

WOW.....

only thing is that my car is drum brakes...does that make any difference or not?

#6 dklawson

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Posted 03 July 2007 - 04:21 PM

I think the only difference about the drum and disks relative to your questions is that you should be able to remove the drive flange for the wheel and press in the wheel stud using an arbor press or bench vise. The function of the CVs is basically the same.

#7 il-barba

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Posted 05 July 2007 - 06:00 PM

now i have done everything and they are fine.

i have new questions.....i have reassambled everything back on,

now i have a little 3/6 o clock play, would the problem be solved by tightening the hub nut more? or would that be the bearing? ;D

#8 Big_Adam

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Posted 05 July 2007 - 07:44 PM

Ladies and gentlemen,

I give you Doc Lawson. Mini expert extradoinaire.

#9 dklawson

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Posted 05 July 2007 - 08:55 PM

Ladies and gentlemen,

I give you Doc Lawson. Mini expert extradoinaire.


Uhh, thanks? I'll only offer you help or information on areas of these cars I've actually worked on.

"now i have a little 3/6 o clock play"

Where is this play, in the steering wheel, ball joints, elsewhere?

The front bearings are held apart by a spacer sleeve or extended inner races on the bearings. When you torque the castle nut you're pulling those components together tightly along the center axis of the wheel. On disk brakes there is a tapered split washer under the castle nut. You need to omit the tapered split washer at first, replacing it with a heavy flat washer. Torque to the specified amount with the flat washer then remove it, replace with the tapered split washer, and torque again to the specified value. If you fail to do it this way you can have the split washer collapse too early and it makes it seem like the wheel is properly torqued when it really isn't.

#10 il-barba

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Posted 06 July 2007 - 05:14 AM

well my play occurs mostly when i move the hub, thats why i suspect ball joint, because when i had everything off the steering ball joint had no play in it so the only thing that can move now i think is the bearing. i have drums so there is no split washer.

i think im going to change the bearings anyway so they will be new and i wont have to touch them anymore

#11 dklawson

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Posted 06 July 2007 - 02:16 PM

So you've eliminated the steering rod ends as the source of your play.

I'm still not understanding how and where you are moving the hub that you're observing play. Please describe how you're moving things.

The ball joints can develop play as they wear and they can be re-adjusted if they aren't scored, I believe I mentioned this earlier. If the ball bearings in the hub wear, there isn't a lot to do on/with them except replace them. When those bearings wear they should introduce noise and roughness but they shouldn't contribute to "play".

Again, please describe in detail how you're moving the hub assembly, what's connected (and what's not) and the nature of the play you're observing.

#12 il-barba

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Posted 13 July 2007 - 06:22 PM

im sorry i was really busy.

im going to replace the wheel bearing. i have drums at the front. so how do you remove the old bearing? it moves but there is a rubber thingy which is holding it in place, how would i remove that?

#13 il-barba

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Posted 04 August 2007 - 10:44 AM

are the upper and lower ball joint interchangeable? because i bought a kit and im suspecting that its for one side only. (its like minispares kit)

#14 Big_Adam

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Posted 04 August 2007 - 12:54 PM

Same each side & top to bottom. This is BMC remember, so few parts to do more jobs.

#15 il-barba

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Posted 04 August 2007 - 03:12 PM

even if i do have the spring included?




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