Half Shaft Question
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Instructor
Joined: Apr 2017
Posts: 205
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Half Shaft Question
75 coupe.... just had my trailing arms, half shafts, etc. rebuilt (Van Steel).
Question about torque for half shafts. The assembly manual shows 60-90 FT/LBS for where the shaft mounts to the wheel, and then it shows 25-36 FT/LBS for shaft to differential mount.
So is that correct? Seems odd to me that they would be so far off. Additionally with the french locks on the wheel side, it is unlikely they'd come free, but on the diff side, it's just lock washer and torque, which IMHO, seems low.
BTW - some PO used loctite (or something similar on the shaft / diff bolts (or so it seemed to me).
Any thoughts?
Question about torque for half shafts. The assembly manual shows 60-90 FT/LBS for where the shaft mounts to the wheel, and then it shows 25-36 FT/LBS for shaft to differential mount.
So is that correct? Seems odd to me that they would be so far off. Additionally with the french locks on the wheel side, it is unlikely they'd come free, but on the diff side, it's just lock washer and torque, which IMHO, seems low.
BTW - some PO used loctite (or something similar on the shaft / diff bolts (or so it seemed to me).
Any thoughts?
Le Mans Master
Joined: Aug 2005
Posts: 6,541
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From: Temple Terrace Florida
It may be that the outer bolts are subject to much more vibration then the inside connections. You can prevent the french locks from twisting up by putting a little grease on them where the bolts go through. Jerry
Thread Starter
Instructor
Joined: Apr 2017
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Yeah, I think the specs I posted are correct. I still don't understand it, but after some more digging, it seems to be correct. As to the french locks, a trick I heard was to lube them up with some grease so they tend to not twist when you torque them down. Not sure if that will work or not, but we'll see.
Le Mans Master
Joined: Apr 2001
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From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
Specs should be right. The big difference from outer to inner is bolt size. The outer bolts can handle more torque. The inner ones on a high performance models have caps, while the lower performance ones use u-bolts.
