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Torquing shock piston top nut?

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Old Jan 12, 2008 | 07:14 PM
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Default Torquing shock piston top nut?

When I reassembled the rear shocks/springs, I didn't properly torque the rear shock piston top nuts, though I did tighten them down by holding the top of the piston on its flats with an 8 mm wrench and cranking down the nut so that the same # of threads were showing as were on the old shocks.

SO- once back in the car, how do people get this nut to 43 ft-lbs? Crow-foot on the nut, 8mm wrench on the flats? Bigass vicegrips to hold the piston shaft while tightening from above? (I'd hate to score the piston rod....) Special socket? Other?
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Old Jan 12, 2008 | 07:25 PM
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Shock Socket.
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Old Jan 12, 2008 | 07:51 PM
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Like this? (Hazet 2593-19). Ouch- pricy:

http://www.samstagsales.com/images/hz2593-19.jpg


http://www.samstagsales.com/Porsche.htm#suspension
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Old Jan 12, 2008 | 10:39 PM
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if the car is on the ground this should provide enough to HOLD the piston from turning, if your not sure try using an impact on the nuts seems to tighten them up fine but you wont know the exact torque, but they will be tight.
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Old Jan 13, 2008 | 12:45 AM
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I just use my feelo-o-meter torque wrench (feels like 43 ft-lbs). You could use a crowfoot on a torque wrench before mounting.
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Old Jan 13, 2008 | 01:29 AM
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The nut should bottom out on the shaft threads, so when you tighten the nut you'll notice the stop. Since this is a lock nut, any further torque beyond the stop is excessive. The torque specified in the WSM, is sufficient to ensure the nut is properly bottomed out.

Notice that the WSM calls for "renew" the lock nut. You should have used a new locknut to ensure the nut will not work loose during the life of the shock.
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Old Jan 13, 2008 | 03:05 AM
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Car's on the ground, I'll just try it amd see if it'll torque up. If not I'll just bottom the nut on the threads. I did use a new nut (and 3 new nuts on the upper shock mount, though they won't be quite as new once I take the shocke tower covers off.....)
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Old Jan 13, 2008 | 04:30 AM
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if you take them apart again, use new nuts, again.

per FWM's, renew your nuts.......

--Russ
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Old Jan 13, 2008 | 04:03 PM
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Originally Posted by Rob Edwards
Car's on the ground, I'll just try it amd see if it'll torque up. If not I'll just bottom the nut on the threads.
It won't "torque". The shaft will spin. I wouldn't worry about it. It's a lock nut and it's not going anywhere.
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