Quote:
Originally Posted by redline racer510
A&Mcan you please enlighten us about how you replaced the "stack" and what parts you used and where you got them?
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Quote:
Originally Posted by opponheimer
Anyone know what size belleville springs need to go on a obx lsd? And is a press needed?
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here's a great thread with pics of the 240 obx taken apart and other good info
OBX LSD for 240sx R200 - Page 2 - HybridZ
as far as specialty tools i used an impact wrench to take out the bolts that hold the casing togther but thats it, no presses needed.
when you get the diff there are like 9 or 10 bolts that hold the unit together that need to be removed. From there several helical gears that need to be removed surrounding a central gear. Under the central gear are two other straight cut gears that sandwich a set of belleville springs(they look like washers but the center is elevated above the outer edge). Mine were thin and brittle one was cracked and broken. I replaced them with a set of McMaster-Carr belleville springs that are a lot stronger as per the part numbers given to me by Aceinthehole. Its up to you to decide how you wish to stack them.()()()() setups yields the most deflection per load while a ))))))) setup will increase the load ability and minimise deflection. I believe the setup that the obx uses stock is (())(()), iirc i did mine ))(())((. Then its just a matter of putting everything back together.
A VERY IMPORTANT NOTE, when reassembling the diff find some kind of stick or something to run through the center of the diff to keep the springs aligned otherwise you might end up with an unpredictable diff.
Here are the part numbers for the 2 sets of springs from McMaster-Carr
9712K82 1 Pack High-carbon Steel Belleville Disc Spring, .630" Id, 1.250" Od, .040" Thick
9712K444 1 Pack High-carbon Steel Belleville Disc Spring, .531" Id, 1.250" Od, .062" Thick
Hope that helps!