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Unread 11-28-2009, 10:18 PM   #1
expat
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Default Replacing CV bands

EDIT - since writing this, West Marine no longer stock the bands but Schuly has found another supplier for the bands

http://www.mcmaster.com/# stocks them in both 430 and 304 SS. See page 257 of the catalog.

The part numbers for the (304SS) 3-1/2" to 4-3/8" is 5574K24 http://www.mcmaster.com/#5574k24/=dcpb40

and for the 1" to 1-5/8" is 5574K16 http://www.mcmaster.com/#5574k16/=dcpbju

You have to order the larger in packs of 5and the smaller in packs of 10. But it is still much cheaper than ordering the high grade 316SS.



Had a leak for a while so decided it was time to fix

Needed a couple of basic items

Bands in two sizes
Tube of CV grease
Tin snips
Injector and needle

Band specs:

Sizes of hose clamps

small
SAE - 9347410 - 3/8" 304 Stainless Steel Hose Clamp 1" to 1-5/8"
METRIC - 9347410 - 9mm 304 Stainless Steel Hose Clamp 25mm to 40mm

Large
SAE - 9347493 - 3/8" Stainless Steel Hose Clamp 3-1/2 to 4 3/8"
METRIC 9347493 - 9mm Stainless Steel Hose Clamp 90mm to 110mm

Available from West Marine http://www.westmarine.com/webapp/wcs...tial/0/0?N=377



The bands I purchased are rounded so they don't dig into the boot like conventional bands from hardware stores. I had to get them from a marine store.

The leak


Removed the small band by prying open the two tabs




This releases the band





Then cut the band



Clean up the CV shaft then inject grease into boot to top up. (This I found really hard to do. It was very hard to squeeze the grease thru the injector and the needle but eventually put in about half of the injector.)




Then place new band on and crank up - be careful not to over tighten and tear boot


Done!


I'll post up details of measurements of bands later
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Last edited by expat; 07-26-2011 at 09:11 PM.
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Unread 11-29-2009, 06:29 PM   #2
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i did the smaller two the same way so far so good. i may have to go get some of the rounded clamps, didnt even think about the square edges. i just had some laying around.
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Unread 11-29-2009, 06:36 PM   #3
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Originally Posted by java230 View Post
i did the smaller two the same way so far so good. i may have to go get some of the rounded clamps, didnt even think about the square edges. i just had some laying around.
Did you add grease and if so, how, and how much, and how effective was your method? Thx.
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Unread 11-29-2009, 06:56 PM   #4
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those look more like hose clamps than cv bands....they may work out just fne for you but i tried using something similar and the torque (pressure) never seemed to be enough to keep the bands from leaking. I would just check them after you do some steady driving and make sure you dont continue to leak. i've found from experience that the cv crimping tool and the crimped style bands were the only type that worked for me. Just my
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Unread 11-29-2009, 07:34 PM   #5
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The bands that are used for turbo piping would work well. They supposed to withstand a lot more pressure that a typical hose clamp.

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Unread 11-29-2009, 07:40 PM   #6
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Quote:
Originally Posted by expat View Post
Did you add grease and if so, how, and how much, and how effective was your method? Thx.
didnt add any grease. been meaning to go buy an injector....
but they havent leaked since. took it wheeling yesterday with no probs. its been about a month now
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Unread 11-29-2009, 07:41 PM   #7
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Quote:
Originally Posted by caslim View Post
The bands that are used for turbo piping would work well. They supposed to withstand a lot more pressure that a typical hose clamp.

t clamps are awesome but the nut and bolt add alot of weight to something spinning rather fast.
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Unread 11-29-2009, 07:58 PM   #8
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Oh ya. That is true. Good point.
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Unread 11-29-2009, 08:30 PM   #9
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Quote:
Originally Posted by caslim View Post
The bands that are used for turbo piping would work well. They supposed to withstand a lot more pressure that a typical hose clamp.

I wouldn't use those because they have sharp edges which can cut into the boot when tightened. Also there really is not need for clamps that withhold pressure because there really isnt much pressure inside the boot (well except for the pressure on the boot caused by tightening).
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Last edited by expat; 11-29-2009 at 08:33 PM.
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Unread 11-29-2009, 08:36 PM   #10
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Mark,
Use a needle attachment to a grease gun.
http://forum.ih8mud.com/4274705-post5.html
You can easily squeeze all the grease you want in there.
This would also let you reach all the way in to the CV balls and pump grease into them to really lubricate the CV.
just pumping into the boot will help waterproof it but if you lost a lot of grease, won't help lube the CV.

However, I don't see how you could loose much grease with a undamaged boot so I think you are plenty good.
Good find on the rounded edge hose clamps
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Unread 11-29-2009, 09:15 PM   #11
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Quote:
Originally Posted by java230 View Post
t clamps are awesome but the nut and bolt add alot of weight to something spinning rather fast.
A 32" tire, at 60 MPH is rotating at 630 RPM.
None of this should be a balance problem.

Even tie wire, wrapped properly, should work just fine.

Did Toyota just get the tension wrong on the factory straps?
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Unread 11-29-2009, 09:28 PM   #12
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Quote:
Originally Posted by Cruiserhead View Post
Mark,
Use a needle attachment to a grease gun.
http://forum.ih8mud.com/4274705-post5.html
You can easily squeeze all the grease you want in there.
This would also let you reach all the way in to the CV balls and pump grease into them to really lubricate the CV.
just pumping into the boot will help waterproof it but if you lost a lot of grease, won't help lube the CV.

However, I don't see how you could loose much grease with a undamaged boot so I think you are plenty good.
Good find on the rounded edge hose clamps
Great product James. Thx for that.
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Unread 11-29-2009, 09:54 PM   #13
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Quote:
Originally Posted by Photog View Post
A 32" tire, at 60 MPH is rotating at 630 RPM.
None of this should be a balance problem.

Even tie wire, wrapped properly, should work just fine.

Did Toyota just get the tension wrong on the factory straps?
hmm guess your right, i thought it would have more force but i guess not.

seems to be a problem with some of the cv's after a lift. there have been a few people that it has been a prob for
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Unread 11-29-2009, 10:28 PM   #14
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Great write up!!!

What is the dimensions of the bands you used? Guess if someone finds on online link to these bands it would be great as well. I like the screw type much better than the fancy CV bands as it is pretty hard to get the tools for CV bands to the inner boot.
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Unread 11-29-2009, 11:42 PM   #15
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I've got the measurements and the online link in the garage. I'll post up soon.
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Unread 11-30-2009, 07:58 AM   #16
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Mark great job on the writeup and especially the pics while you worked. It's not easy to document each step when you're working through a problem. You did great. Thanks! I think the tool James posted up will help too. I don't have a leak but when/if I do this will be my solution.
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Unread 11-30-2009, 08:43 AM   #17
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Good writeup. I have a set of the clamps listed here (same marine type you used) in my repair kit just in case.
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Unread 11-30-2009, 05:37 PM   #18
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I had the same problem with my straps. I put the same straps on as Mark did a while back, and have only notice a little leakage. I've had mine on for about 5 months.
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Unread 12-06-2009, 11:12 PM   #19
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Sizes of hose clamps

small
SAE - 9347410 - 3/8" 304 Stainless Steel Hose Clamp 1" to 1-5/8"
METRIC - 9347410 - 9mm 304 Stainless Steel Hose Clamp 25mm to 40mm

large
SAE - 9347493 - 3/8" Stainless Steel Hose Clamp 3-1/2 to 4 3/8"
METRIC 9347493 - 9mm Stainless Steel Hose Clamp 90mm to 110mm

Available from West Marine
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Unread 12-06-2009, 11:46 PM   #20
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Ive got a tiny bit of seepage from the lower bands... Ive never wiped it off, but i did the other day and there isnt anything there yet. Im sure theres always gonna be a little grease there.
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