CV Boot Replacement Show & Tell? | Page 2 | FerrariChat

CV Boot Replacement Show & Tell?

Discussion in '348/355' started by WATSON, Feb 21, 2016.

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  1. WATSON

    WATSON Two Time F1 World Champ
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    Perfect. Thanks....

    Aero Boots for the inners & Porsche 930 boots for the outers have been ordered. :)
     
  2. ernie

    ernie Two Time F1 World Champ
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    Nice thread.

    I'm looking forward to seeing the DIY pics. ;)
     
  3. johnk...

    johnk... F1 World Champ
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    I bought 930 boots when I did mine. Didn't fit.
     
  4. WATSON

    WATSON Two Time F1 World Champ
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    Interesting... were they 1979 Porsche 930 boots? Too small? Too big?
     
  5. johnk...

    johnk... F1 World Champ
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    #30 johnk..., Feb 23, 2016
    Last edited by a moderator: Sep 7, 2017

    The 930 Boot has a flat "lip" with inside diameter = 50 mm. The Ferrari boot has a thick contoured lip which sits in the mounting flange. The Ferrari mounting flange has a minimum diameter of 55 mm and at the outer edge is 60 mm. In the pictures only the part of the Ferrari boots which goes over the flange is shown. The rest of the boot has been cut off. Where this idea that a 930 turbo boot "fits" came from I don't know. Considering the labor involved it's just stupid not to buy the correct boots. The correct boot, mounted on a new flange, with grease and clamp can be had from Superformance for about 30 pounds ($42) or with inner and outer boots and grease for 49 pounds ($69) http://www.superformance.co.uk/355/driveshaft.html and you can get a CV boot clamp tool for $10. Do it right or don't bother because you will be doing it again it you don't.


    See pictures:
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  6. WATSON

    WATSON Two Time F1 World Champ
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    #31 WATSON, Mar 22, 2016
    Last edited by a moderator: Sep 7, 2017
    I tool my L/H axle shaft out. Rubber boot a mess. Everything a mess!

    Cleaned up the CV joint and noticed there is a ring on one side. Is there a direction to these? That ring face the differential or the wheel when reinstalled on the axle shaft??

    Picture:
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  7. WATSON

    WATSON Two Time F1 World Champ
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    Got it. Ridge is toward the differential side. So says the dealer that quoted me $3000 to do the job <gulp>
     
  8. m5guy

    m5guy Formula 3

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    Randy, you may want to check the instructions I sent you. I think there is also be a ring on the bearing basket. Needs to be reinstalled in the same orientation otherwise the inner basket will not rotate and swivel freely. Welcome to the greasy mess!

    -Greg
     
  9. WATSON

    WATSON Two Time F1 World Champ
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    #34 WATSON, Mar 23, 2016
    Last edited: Mar 23, 2016
    "Bearing basket" ??

    EDIT: Wait. You took the CV joint apart to clean it right? I did not. I just dumped the whole thing in a parts cleaner pail and carefully kept it all as one assy.

    Is that what you meant by "bearing basket" (or inner section) of the CV joint?
     
  10. WATSON

    WATSON Two Time F1 World Champ
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    I am all done. Why do I feel REALLY bad about tossing all the old, greasy, split boots & components in the trash bin?
     
  11. WATSON

    WATSON Two Time F1 World Champ
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  12. WATSON

    WATSON Two Time F1 World Champ
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    #37 WATSON, Mar 25, 2016
    Last edited by a moderator: Sep 7, 2017
    This method is for a CV boot exchange with the engine in the car.

    Remove the engine side panels & airboxes. You may not need to do this, but the visibility is priceless. Remove the CV heat shields (you can leave the mounting brackets in the car)

    Jack the car up and support on jack stands with the center hub 18” – 19” in the air. If you have a lift great! Just set the car so the center of the hubs are 18” – 19” (I’ll explain later).

    Drop the aero panels. Pull the rear tires. Remove the inner fenders. Next remove the calipers and hang from the rear cross bar that holds the inner fender on (see photo below) Some 110 volt household wire works perfect.

    Remove the ABS sensor. It is located on the forward section of the hub, behind the rotor. 10mm nut removes the cage. Remove the 10mm clip that is on the top of the hub. Once those are removed, hang the ABS sensor with the calipers in the back.

    If you aren’t sure how to accomplish any of what I just described.…stop and call a mechanic to do your CV boots.
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  13. WATSON

    WATSON Two Time F1 World Champ
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    Remove the center hub nut.

    Tools:
    A hammer. Not a dead blow, but a damn claw hammer (I hate hammers when working on cars, but honest, you need it this time)
    Punch (you can get a cheap punch set at Harbor Freight. Nice to have around).
    DO NOT USER A SCREWDRIVER. It wont work…I assure you.
    36mm - 6 point socket
    Impact wrench (Impact wrench’s can cause a lot of damage in the wrong hands. I rarely use mine…it is needed here)

    Place the punch in the groove of the axle shaft and pound out the tabs of the axle nut. It may take a few different style punches from round to pointy to make the tab bend away properly. If you are looking for pretty you came to the wrong place. Just make sure you avoid hitting the threads on the axle shaft.

    Set the e-brake. Attach the 36mm socket / impact and spin the nut off. Throw the nut away. DO NOT REUSE IT
     
  14. WATSON

    WATSON Two Time F1 World Champ
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    #39 WATSON, Mar 25, 2016
    Last edited by a moderator: Sep 7, 2017
    Remove the CV Bolts:

    Tools:
    ½” breaker / ratchet.
    30” worth of ½ extensions
    13mm, 12 point, socket

    The tricky part:

    I was told many many years ago that if you can use an extension to get the ratchet outside the engine bay, do it. It has saved me a ton of time, a ton of busted knuckles and a lot of agony over the years. Others disagree so I’ll leave that debate for another thread. Suffice it to say that I did this with extensions.

    With the rotors still on the car (yes, the picture is with them off as I forgot to get the image before hand and too dirty & lazy to refit it), rotate the rotor so you can see the first of 6 CV bolts through the A-arm assy. Slide the 13mm socket on your ½ extension through the a-arm assy and set it on the CV bolt. (picture below). Rotate the rotor to maximize seating of the socket on the bolt. (I did not need wobble ends on my socket.).

    With the rotors still on the car Go and set the e-brake as hard as you can (or drop into 1st gear if you have a 6 speed). Seriously. If you set the e-brake with the rotors off, the shoe retaining bolts will break. They are $94 each...there are four of them.

    Come back and attach your ratchet and break the bolt free. You can look over the fender and see the socket seat on the bolt. Keep it on there tight. They are set pretty hard and a solid pop is necessary to break the bolt free.

    Rinse & repeat 5 more times. The bolts do not need to come out of the car. Just make sure they are free from the flange. In fact the CV boot holds them in place to keep things nice and neat &#9786;
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  15. WATSON

    WATSON Two Time F1 World Champ
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    #40 WATSON, Mar 25, 2016
    Last edited by a moderator: Sep 7, 2017
    Remove the axle shaft

    Tools:
    17MM wrench (thin 17mm wrench or needle nose vice grip)
    19MM wrench & socket
    24mm wrench & socket (7/8&#8221; work here as well)
    2 x 6&#8217;s cut into 24&#8221; lengths (6 &#8211; 8 of them)

    I found it easier to just pull the whole hub off than start disconnecting the exhaust & headers.

    First, set a small stack (6 - 8 pieces) of the 2 x6&#8217;s to catch the hub assy after it is loose.

    (1) Loosen the tie rod using the 17mm wrench. The nut is behind the anti-sway bar. The bolt will spin unless you capture it on the opposite side of the anti-sway bar in the flats provide for on the link. Set the nut & washer aside.

    (2) Loosen the shock bolt. 19mm on both sides. Using your punch and a small plastic hammer knock the bolt out. Remove the two washers on either side of the shock. Set aside

    (3)Loosen the upper a-arm bolt. 19mm on both sides. Remove the bolt and set the parts aside.

    (4) Loosen the 24mm nut on the lower arm and set parts aside again.

    ** clean the heads of bolts and marvel at the embossed Ferrari horse (errrr Stallion!) molded into the end of it&#8230;.and remember not to use a hammer when putting them back in.

    Make sure the tie rod is free and folded toward the shock.
    Pull the top of the hub free from the upper a-arm and lower toward you watching tension on the e&#8211;brake cable.

    Pull the bottom of the hub free from the lower a-arm and set the hub on your stack of 2x6&#8217;s.

    Push the lower a-arm out of the way and catch the cool little silver bushing heat shield bands before you lose them.

    Lift the hub assy up and remove all but 2 of the 2 x 6&#8217;s and set the hub down. (Why the car needs to be 18&#8221; or so above the ground.)

    Pull the axle shaft out of the hub. Manipulate the axle shaft and remove from the car.

    With the car already in the air and ready, the entire process, starting with the calipers, took me 45 minutes to have the axle shaft on my bench.

    Happy days!
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  16. lotusk

    lotusk Formula 3

    Nov 3, 2003
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    Excellent write up
    Excellent photos too

    Satisfying work
    Love the horses on those bolts
     
  17. WATSON

    WATSON Two Time F1 World Champ
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    #42 WATSON, Mar 25, 2016
    Last edited: Mar 25, 2016
    I do not have any images of the actual rebuild process. It was too damn messy.

    That process is well explained in the other thread links posted above. Straight forward without problems.

    I can offer up three tips however:

    1. Go to amazon and get the proper crimp tool. This one worked perfectly on the clamps:
    Amazon.com: Lisle 30800 CV Boot Clamp Pliers: Automotive

    2. As mentioned I hate using hammers on cars. To that end whenever I have an old broom or mop ready for the trash heap, I cut the handle into 12" sections. The hard wood is great for absorbing shock. I used that against the end caps and tapped them off without any damage to the CV joint.

    3. That little yellow plastic hammer I posted above is perfect to tap the caps back in place.

    OH! and I picked up one more from the posts...wrap the axle shaft threads with several layers of electrical tape. Makes sliding the boots on MUCH easier.
     
  18. WATSON

    WATSON Two Time F1 World Champ
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    #43 WATSON, Mar 25, 2016
    Last edited by a moderator: Sep 7, 2017
    Which boots to use???

    I did buy a set of Porsche boots and the &#8220;aero&#8221; boots. After some consideration and research, I also bought a set of Ferrari boots from Ricambi.

    In the end I used the Ferrari boots all around (I did all 4).

    The Porsche boots are simply wrong for the car.

    As mentioned by johnk, and so clearly posted above, the seat is in correct. In addition the axle shaft diameter is smaller. (Porsche boots on the left below)

    The aero boots would have worked (last picture), but the rubber part was somewhat shorter. I don&#8217;t race the car and it wasn&#8217;t a matter of trying to save some money&#8230;so my car has all Ferrari OEM parts on it.

    If someone has an interest in the Porsche or aero boots PM me. I have no need any longer.
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  19. marioz

    marioz Formula 3

    Nov 21, 2003
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    Nice write up Watson & good to see you put all the other relevant threads on here.

    This will be the index for future CV boot replacement questions.
     
  20. WATSON

    WATSON Two Time F1 World Champ
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    #45 WATSON, Mar 25, 2016
    Last edited by a moderator: Sep 7, 2017
    All cleaned up and ready to go back in.

    Reinstall was straight forward.

    Slide axle shaft back in the car.
    Position the axle shaft into the hub
    Add back your 2x6's to raise the hub up to the lower a-arm.
    position the hub and a-arm in place and slide the bolt back in.
    Repeat for the upper a-arm, shock and tie-rod.

    Then install the CV bolts. The first one is the hardest.

    First spray the flange threads & bolts with brake or carb cleaner and make sure everything is clean.

    Add a small dab of Molykote (per the WSM) to each bolt.

    Push the CV joint against the flange and spin the bolt into the flange threads. Do this by hand to make damn sure you do not cross thread that flange!

    Once started, tighten carefully to bring the CV joint flush with the flange.

    Hand start the other five and then bring to tight.

    Install the rotor.

    re-insert the 13MM socket on your 1/2 extensions (30" worth) and reach in and secure on the first CV bolt by rotating the rotor.

    Set the e-brake and torque down. Lots of debate on that setting. I used 100 ft/lbs. Kinda like a small lug nut I guess. Make sure you hit all 6 at 100 ft/lbs. :)

    Spin on the axle nut and torque to 250 ft/lbs. I used my 700 ft/lb impact wrench set at it's lowest setting...which is probably closer to 300.

    Mark everything with yellow paint and you are all done!
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  21. WATSON

    WATSON Two Time F1 World Champ
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    One last update. I went and got a 250 lb torque wrench. Glad I did. Needed another 1/4 turn on the axle shaft nuts to achieve that number.

    Moral of the story is "use the right tools please" :)
     
  22. johnk...

    johnk... F1 World Champ
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    Nice job.

    Only one thing I would mention. It is not necessary to remove the bolt holding the hub to the lower control arm. Once the shock and upper control arm bolt have been removed the hub can just be pulled from the top tilting it outward and providing all the clearance needed to remove the axial.
     
  23. WATSON

    WATSON Two Time F1 World Champ
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    Sadly, not mine.

    I could not get the axle shaft out without pulling the hub off the lower a-arm...at least the L/H side. I didn't even waste my time trying it on the R/H side. It takes moments to just pull the whole hub off and makes life much easier for re-install.
     
  24. fatbillybob

    fatbillybob Two Time F1 World Champ
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    #49 fatbillybob, Mar 25, 2016
    Last edited by a moderator: Sep 7, 2017
    Nothing like a judicious use of force. I have about 2 dozen hammers of all different types and shapes and use them all. Sometimes I even make my own hammer faces. This is a favorite of mine a Ferrari/USAG hammer with custom delrin face. Hammers are a super important tool.

    Good job on the CV joint. I was just saying in another thread that doing a "CV show and Tell" would be a good tech for our next Stooge event. I have never thought to use the aero boot. Where do you get those and what is the part number if you don't mind sharing. Also, what was wrong with the porsche boot. I have used some kind of P boot in the past depending on availability and cost and it was identical to the OEM boot the few times I have used them. Was the P boot you got different?
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  25. AceMaster

    AceMaster Three Time F1 World Champ

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    This is one of the most accurate, (as well as important) posts on this site
     

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