Results 1 to 15 of 15
  1. #1
    mtbr member
    Reputation:
    Join Date
    Aug 2009
    Posts
    75

    How to service XTR V brakes.

    I couldn't find much on this so I thought I would share what I know. I bought a pair of XTR 960 V's from ebay for my polo bike build, that were not very smooth and I wanted to fix that. It's a good idea to keep one brake together for reference. Here's what I did:

    First lift up the rubber cover. The two aluminum nuts are now visible. Next remove the top jam nut by holding the lower nut with a 17mm cone wrench, and use a 14mm cone wrench to loosen it. By unscrewing the top jam nut, it will lift the top of the parallelogram off, which is a press fit piece. Swing the parallelogram out of the way and remove the bottom nut.
    The bearings are a two piece set, one having the captured balls and one race, and the other race. Disassemble the brake keeping the two pieces of the two sets of bearings together
    (each bearing and race should remain a matched set).
    Attached Thumbnails Attached Thumbnails How to service XTR V brakes.-100_0511.jpg  

    How to service XTR V brakes.-100_0514.jpg  

    How to service XTR V brakes.-100_0516.jpg  

    How to service XTR V brakes.-100_0517.jpg  

    How to service XTR V brakes.-100_0518.jpg  

    How to service XTR V brakes.-100_0520.jpg  

    How to service XTR V brakes.-100_0522.jpg  

    How to service XTR V brakes.-100_0523.jpg  

    How to service XTR V brakes.-100_0524.jpg  

    How to service XTR V brakes.-100_0525.jpg  


  2. #2
    mtbr member
    Reputation:
    Join Date
    Aug 2009
    Posts
    75
    Now its time to clean the parts. For the small parts I use a tea ball and swish it in a jar of mineral spirits. The rest of the brake parts I used a Q-tip and paper towel.
    Once the parts are clean and dry the bearings need to be greased with whatever grease you would like to use. A small amount is enough to lubricate the small bearing balls.
    Start the reassembly by sliding one race and one bearing on the brake base. Next insert the base into the brake arm. Then set the other bearing, then race into the brake arm
    Attached Thumbnails Attached Thumbnails How to service XTR V brakes.-100_0527.jpg  

    How to service XTR V brakes.-100_0528.jpg  

    How to service XTR V brakes.-100_0529.jpg  

    How to service XTR V brakes.-100_0531.jpg  

    How to service XTR V brakes.-100_0532.jpg  

    How to service XTR V brakes.-100_0534.jpg  

    How to service XTR V brakes.-100_0536.jpg  

    How to service XTR V brakes.-100_0537.jpg  

    How to service XTR V brakes.-100_0538.jpg  

    How to service XTR V brakes.-100_0539.jpg  


  3. #3
    mtbr member
    Reputation: Major Clanger's Avatar
    Join Date
    Feb 2012
    Posts
    185
    Good post.........

    Out of interest, how much play is there on the axle the actual brake pad mounts on to? There's loads on my old bike and I wasn't able to source a re-build kit in GB (product too out-of-date I think). If you had bad play how did you get around it?

    Thanks
    Using yesterday's technology, to create tomorrow's problems, today.

  4. #4
    mtbr member
    Reputation:
    Join Date
    Aug 2009
    Posts
    75
    Spin the larger bottom nut all the way down finger tight. Snug it up with the 17mm cone wrench but not tight. The base should spin freely under the brake arm. Now install the smaller nut ( relief cut facing the bottom nut). Tighten it against the bottom nut while holding it from spinning with the 17mm wrench. Keep in mind these are aluminum nuts, so err on the lighter side of torque. Slide the rubber boot over the parallelogram. This part is the only tricky part and is where the brake for reference is helpful. Lift the parallelogram over the brake and align the notches. The fit is a press fit so I used a small plastic bar clamp to lightly press the parallelogram onto the brake. Don't go overboard, cause if it's not completely seated, it will press on the rest of the way when it is mounted to the bike. Replace the rubber boot over the nuts. Wipe any excess grease from the brake.
    Make final bearing adjustments (preload) when the brake is mounted on the bike. It should move very freely but have no play.
    Attached Thumbnails Attached Thumbnails How to service XTR V brakes.-100_0540.jpg  

    How to service XTR V brakes.-100_0542.jpg  

    How to service XTR V brakes.-100_0543.jpg  

    How to service XTR V brakes.-100_0544.jpg  

    How to service XTR V brakes.-100_0545.jpg  

    How to service XTR V brakes.-100_0547.jpg  

    How to service XTR V brakes.-100_0549.jpg  


  5. #5
    mtbr member
    Reputation:
    Join Date
    Aug 2009
    Posts
    75
    Quote Originally Posted by Major Clanger View Post
    Good post.........

    Out of interest, how much play is there on the axle the actual brake pad mounts on to? There's loads on my old bike and I wasn't able to source a re-build kit in GB (product too out-of-date I think). If you had bad play how did you get around it?

    Thanks
    Thank you.

    There isn't any play in that pivot. I believe I got lucky with these, cause they don't look like they have had a very hard life.........yet.

  6. #6
    mtbr member
    Reputation:
    Join Date
    Mar 2012
    Posts
    41
    i like my v brake setup as well , however later on i might swap out to a front disc brake.

  7. #7
    the catalan connection
    Reputation: What&son's Avatar
    Join Date
    Jan 2004
    Posts
    1,247
    Nice post! Most people don´t know they are serviceable.
    I did that once to my xtr´s too..so much work I didn´t do it again
    I believe these are the only V-Brakes you can actually repack, very nice brakes.
    Thanks!
    "Blessed is the man who, having nothing to say, abstains from giving us wordly evidence of the fact." George Elliot

  8. #8
    mtbr member
    Reputation:
    Join Date
    Feb 2012
    Posts
    8
    Super. Very well presented and informative.
    Regarding the brake blocks - if not used for a few years they (canti / v brake) blocks get hard. If used like that would they damage the rim ? Would appreciate your comments. Thanks. .

  9. #9
    mtbr member
    Reputation: gticlay's Avatar
    Join Date
    Dec 2007
    Posts
    6,578
    They used to sell shim kits for them as well.

    I wonder if it would be easier to spray them out with brake cleaner, heat up a little grease and dip them in there then clean it off the outside?
    "It looks flexy"

  10. #10
    mtbr member
    Reputation:
    Join Date
    Aug 2009
    Posts
    75
    This is not a difficult task. It took me about two hours total to do two pair, take pictures, and write this thread. Granted, the brakes were not on a bike yet.

    Jack- if by blocks you're asking about the brake pads, I've never seen any get hard enough to damage a rim, they just don't work well.

  11. #11
    mtbr member
    Reputation:
    Join Date
    Feb 2012
    Posts
    8
    Quote Originally Posted by steeneriam View Post
    Jack- if by blocks you're asking about the brake pads, I've never seen any get hard enough to damage a rim, they just don't work well.
    steeneriam, thanks. Yes, I mean brake pads. I have started using a bike that was un-used for about 5 years and I find the brake pads have got hard - when you dig them with your finger nail they do not give at all. Besides less braking performance I was wondering if they will wear / damage the rim ? I live in Sri Lanka and good quality replacement pads are not available here - have ordered some but they will take at least 2 weeks to arrive.

  12. #12
    mtbr member
    Reputation:
    Join Date
    Mar 2012
    Posts
    16
    Can anyone tell me what the positional relationship between the "parallelogram" and brake in aligning the notches? I do have the one set still assembled, but I am not getting the same travel in both (the overhauled, and the reference sets). What mark or reference would one use if he did not have a reference set? Also, is the blue loctite?

  13. #13
    mtbr member
    Reputation: breckenridge's Avatar
    Join Date
    Jul 2012
    Posts
    216
    I miss my 1st gen XTR v-brakes. Those plus ceramic Mavic rims and ceramic specific pads were fantastic, even in the wet.

  14. #14
    mtbr member
    Reputation:
    Join Date
    Aug 2015
    Posts
    3
    Thanks @steeneriam for the post. I used your directions as a starting point.
    I thought I'd mention that I went one step further and cleaned out the tension adjusting and shaft part.

    Here's how I did it.
    The shaft is also press fit onto the adjusting section much like the pivot arm is on the top side. Mark/scribe it before removing it. Then using a 3/4" socket you can place the shaft upside down and use a small flat blade screwdriver to lightly tap on the aluminum shaft interlocking fingers driving it off.

    How to service XTR V brakes.-put_the_shaft_in_socket.jpg

    How to service XTR V brakes.-in_socket_ready_to_get_driven_out.jpg

    How to service XTR V brakes.-driving_out_with_screwdriver.jpg
    It was pretty crunchy in there
    How to service XTR V brakes.-apart.jpg
    All cleaned with mineral spirits
    How to service XTR V brakes.-all_the_pieces.jpg
    I used a small clamp to press it back together. Careful to line up the scribed parts.
    How to service XTR V brakes.-putting_back_together.jpg

    Lastly I removed the small allen screw from the upper pivot shaft and put a drop of dry lube in there. Putting the screw back in, squeezed out the lube along the shaft ends.
    How to service XTR V brakes.-put_drop_of_dry_lube_behind_this.jpg


  15. #15
    mtbr member
    Reputation:
    Join Date
    Aug 2015
    Posts
    3

    Good job!

    OP, thanks for the detailed instructions. I used your post as a starting point but thought I'd mention that I went a little further and cleaned out the post and tension adjuster part.
    Here's what I did

    Set the post in a 3/4" deep well socket
    How to service XTR V brakes.-put_the_shaft_in_socket.jpg
    Fits in there like this. The post part is free to drop in the socket but the adjuster base is supported.
    How to service XTR V brakes.-in_socket_ready_to_get_driven_out.jpg
    I scribed the adjuster base and the post to make sure I'd get the press fit finger joint back together in the same spot then used a small flat blade screwdriver and hammer to very lightly tap the aluminum shaft out of the adjuster base.
    How to service XTR V brakes.-driving_out_with_screwdriver.jpg
    Once apart I was glad I did it as it was very crunchy inside.
    How to service XTR V brakes.-apart.jpg
    Cleaned all the pieces with mineral spirits
    How to service XTR V brakes.-all_the_pieces.jpg
    I used a small clamp with an 8mm socket to press the parts back together making sure to align the fingers up they way there were.
    How to service XTR V brakes.-putting_back_together.jpg
    And lastly I removed this small allen screw on the upper pivot shaft and put a drop of dry lube in the hole. Screwing back in the allen screw forces the lube out the shaft ends.
    How to service XTR V brakes.-put_drop_of_dry_lube_behind_this.jpg


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Can't find it? Just search our site!