Toyota FJ Cruiser Forum banner

CV Boot seeping Grease ? SIMPLE FIX !...

1 reading
134K views 196 replies 111 participants last post by  bandi  
#1 · (Edited)
Having a lift that changes the angle of the CV
joints, puts added stress onto the CV boot
clamps, and they will eventually stretch and
grease will seep out between the boot and the
other components which it is clamped around,
ie: shafts and ends...

So, to fix this, you have three options, one is to
pull the axle out and take the joints apart and
replace the clamps with the same closed factory
style clamps... OR, get an aftermarket open end
CV clamp and the special service tool to install it,
OR... Leave the axle in place, Pick up some hose
clamps, cut the factory clamp off and install the
new ones !...

My CV boots' were seeping grease from the boots
due to the OEM bands stretching out from the
increased angle of my CV joints due to the amount
of lift I have dialed in up front on my coil overs...

So, I put my 9mm(3/8") SS hose clamp on the boots
and cleaned up the area using brake clean and paper
towels, and it is holding good, nice and dry... :bigthumb:...

I tried the 9mm x 110mm-130mm clamp, but it
did not have enough threads, so I went to the
9mm x 80mm-100mm clamp, and it was a tight
fit, it worked mind you, but had no excess after
it was installed to be able to bend over the end
a tad so it can come loose... I did however find
the right one I needed listed at West Marine...

HERE are the clamps I got from my local West
Marine store... The ones located on the right,
NORMA 304 Stainless Steel Hose Clamps...

I was going by the tag on the ones I purchased
that were listed in METRIC, but the web site has
them listed in SAE, So here are the numbers from
there...

Size Hose Clamp for Large Boot end :
SAE - 9347493 - 3/8" 304 Stainless-Steel Hose Clamp, 3-1/2" to 4-3/8"...
METRIC - 9347493 - 9mm 304 Stainless-Steel Hose Clamp, 90mm to 110mm...

Size Hose Clamp for Small Boot end :
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...

These clamps are a perfect fit for the CV boot
groove, and work excellent, not a bad item to
have in the trail/travel box... The edges of this
clamp are curved over a tad, so it can not cut
into the rubber boot, a BIG PLUS !...

Image


To remove the OEM clamps, I unfolded the two
small side tabs, then lifted the clamp tab to
release the presure... I took a clippers and cut
the clamp off, since they are a closed circle...

EDIT : Added Images...

Here you can see how the 3/8"/9mm clamps fit
perfectly in the boot slots...
Image

Image


Here are a few more picts'...
Image

Image




There are two types of clamps that were/are on my FJ,
one being the folded tab type(shown above), and the
other is a crimp type shown below...

On the crimped type, I simply cut the tab off to release
the pressure and the clamp comes right off...

Image

Image

* ALWAYS BE CAREFUL not to NICK or CUT the BOOT !...


If you have something different, psot up a picture and
I can try to give you an idea on how to remove it...




Image


An added note, notice the dark black circle on
this image above, well, this is the rub mark when
I had too much angle on my CV's and the boot
rubbed on itself, the adjoining ring, and started
to wear the rubber away...

IF you are lifted with a adjustable coil over, you
want to make sure you are not lifted above the
point where the CV boot rings rub each other
too much... As you can see below, Mine are good
now that I have re-adjusted my lift...

Image


This can be rectified with the joe dapurak' method... Loosen clamp, slide the boot small end about an inch inward towards the other boot, tighten clamp (must use hose clamp mod).

top axle - boot (right side) in stock position.
bottom axle - boot (right side) moved left towards outer boot on left.
Image


No MORE rubbing, leaking, and less wear on boot ! ! ! :cheers:
 
#5 · (Edited)
No Vibes at all, I have been running the large
clamp for some time now, and just added the
small one today as I had a lil' grease seeping
out of the small end for a while... Since they
are mounted so close to the center of rotation
and weigh next to nothing, so it really would
not be felt...
 
#7 ·
I was just under the FJ Saturday, and noticed that I've got a slight seep at the small clamp on the passenger side. Talk about a well-timed post, thanks Bandi!

I'll pop over to the West Marine on 75 at lunchtime this week, and pick up some clamps, and replace the small ones for now. I'll also pick up some spares to stash in the tool box...
 
#8 ·
:rofl:... Yes, PERFECT TIMING... Your Welcome !...
 
#10 ·
Nice. Thanks for sharing this. Can you give us an update on the next oil change? Interested to see how it holds up to OE.

Thanks.
 
#12 · (Edited)
^^^ at the center of the radius, there is not that
much centrifugal force at all...

say, at the edge of a 33" tire, in one revolution, you
are traveling...

Common FJ tire size 33" dia. = 8.64 feet perimeter
Larger boot about 4" dia. = 1.05 feet perimeter
Small boot end about 1-1/4" dia. = 0.33 feet perimeter

So that being said, then that would mean that if you
were driving at say 50mph...

33"= 50 mph
4" = 6.1 mph
1-1/4" = 1.9 mph

So the boots would be only traveling at 6.1/1.9 mph,
not enough to do much at all, if anything... Just try
to visualize driving at those two speeds, and think
about how much centrifugal force would be on the
outer edge of your 33's...

Where's Bellydoc when you you need a good scientific
answer to toss around !... :rofl:...

The resons for them to recomnend the OEM type
clamp could be a simple as they OEM ones sits almost
perfectly flat while the hose clamps have the 'clamp'
to catch on things (rare occasions, so carry a spare
set and a packet of grease for protection)... Also,
some hose clamps are just plain garbage, but the
ones I found are a good quality and are SS for marine
use too...
 
#16 ·
That's why I recomend the ones I listed from west
marine, they have a slight curve to them and have
curved over edges so they won't cut in like a standard
hose clamp that has a flat cross section and sharp
edges...

I will keep an eye on mine just to make sure, thanks
for the heads up...

Leroy, you and I seem to have many of the same issues, and yet we are two brokenddown ships passing in the night :lol: http://www.fjcruiserforums.com/foru...problems-dealer-service/49144-cv-boot-warning-cinch-band-loose-grease-leak.html

Great post!!
Where do you think I got the idea for this... LOLOL... :wave:
 
#24 ·
your' welcome...

The reason these clamps are the ones to get is
that the edges are rounded (not sharp) and are
also curved upwards as not to cut into the boot...

Order them online if you don't have them locally
and store them in your trail box for when needed...
 
#20 ·
Great idea Bandi. I saw your post a while back. As I was at work I immediately put four of these clamps in my recovery bag. Two big and two small. Forgot to thank you for the post. Work will never miss them. :lol:
 
#21 ·
I've been checking my CV's out around the the clamps since my new lift addition. No leakage yet!
What I want to know is if you find a boot that is ripped and the clamps are shot what to do to clean repac and replace the boot once ripped and just discovered after a deep mud hole?

I hope someone rings in with a torn CV boot discovered after some under water deep mud trail ride. What to do ?
 
#23 ·
Replacing the hole boot is a chore... :eek:...

I had got an extra axle to carry around with
me, since I have the MT6 AWD... So when I
ripped my boot one time, I just swapped out
the hole axle for my spare and fixxed the boot
at a more convenient time and place...
 
#26 ·
^^^ :bigthumb:... Keep us posted !....
 
#27 ·
Had similar issues with a lifted Tundra back in the day...except I used some lengthy, heavy duty zip ties...work equally well, easier to install and you can have 100's of replacements on the trail when needed...
Cheers!