View Full Version : xt 752 cranks and what else???
Im starting to rebuild my 96 avalanche...all the lx deore stuff that was hanging from it whent I bought it is still there, amazing.
BUT, i want to get these XT DeoreM752 cranks to replace the LXDeore that are there now, Jenson USA says needs a ES71 BB, what pitfalls will I run into? Im new to building my bike but Im willing to learn, any advice would be great thx.
nigel
11-21-2004, 10:57 PM
for that crank you need the ES71, you currently have a square taper bb if its 96' so you need to upgrade. Just make sure you measure out the shell, or it will say on your current bb if it is readable. More than likely its a 68mm but check to make sure.
Also make sure you have the right tools
--crank remover, get the one for square taper and also get the insert for hollow, otherwise you'll need both
--bb tool, if you dont have one get the one for shimano splined, since you can use it on both square and splined (it fits over the pipe spindle and the sqaure)
make sure you have the threads lined up when putting the new one in and clean and grease the shell and threads prior. Always install the drive side first!
if ya need a hand, PM me if your close i can help ya out :)
Douglas
geeze forgot to mention! Make sure the spindle length is correct as well! Check the old one by measuring the tip to tip for the length of what you have now. If you cant tell what it is, the mail order place "should" be able to tell you what will work with your frame if they have any idea what they are talking about.
dsomers
11-22-2004, 12:09 AM
Don't forget when taking the old cranks off that the drive side of the bottom bracket is reverse threaded.
dano
tedsti
11-22-2004, 09:09 AM
You'll need a 10mm allen for the new cranks and a crank remover isn't needed for the 752's as they have the self extractors. :cool:
You are thinking of the new M760. The 752 is the old Octalink style.
Aclg will need a BB and crank removal tool.
Ted
You've gotten a lot of great advice already. Another good resource is park tool. They have good step by step instructions. http://www.parktool.com/repair_help/FAQindex.shtml
Let us know if you run into any problems as you get into it.
You are thinking of the new M760. The 752 is the old Octalink style.
Aclg will need a BB and crank removal tool.
TedActually the 752's have the "one key release system" so all that is needed is a 8mm hex. No crank removal tool needed. I couldn't remember for sure so I looked it up. This is the best link I could find.
http://www.awcycles.co.uk/products.php?plid=m5b41s178p1414&tbv=SHIMANO_DEORE_XT_M752_9s_THE_COMPONENT_SHOP_Ge ars_-_MTB_Chainsets
You can use a standard crank puller on the hollow spindle octalink BB's, there just happens to be a step-down inside the spindle. I stuff a small socket, one that just fits (square drive end facing out) into the spindle so it butts up against the stepdown, then use the crank puller per stock proceedures. The step-down is off center, so on the drive side it only takes 1, but for the other side it takes 3 sockets. Then I stick a socket screw-driver in to engage the square end of the socket and pull it out. Beats having to buy the special $15 crank puller just for that one set of Cranks/BB.
OK, sorry, just had to share that little tip, back on topic now.
you guys are fast for a monday morning! thanks a ton, im going to check out those links now...HOpefully then all is in order. I will check out and verify the spindle length of the old bottom bracket, the case dimension too. One more question though....Now I purchased my bike early in 98 from county cycles, the guy told me it had been sitting around for a little over a year and that's where I got the idea it was a 96 avalanche. If by chance he or I were wrong, and it's a 97, or even a 98 model, would the frame size differ that much? what may be a good link to find this out? Could I use the serial number on the bottom to figure out the exact year?
Thanks again, its great to be talking bikes again. Ive had this ol gal hung up for awhile, took it out this weekend in the mud and im a kid again.
see U in the dirt.
aclg
funky-funky-chicken
11-22-2004, 10:40 AM
AC, on a long shot, if you still have your receipt from County Cycles, you would be able to determine what year the bike is from. They use a very sophisticated system whereby the last digit in the price signifies what year the bike is. If the price ends with .98 then it would be a 1998, .97 would be 1997. Tricky huh.:eyeroll:
Having installed 4 sets of these I can without a doubt say that they use a 10mm hex, the only tool needed.yea - my bad. 10mm not 8mm. thanks for correcting.
But no crankarm tool needed.
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