| SBSerpent |
11-04-2020 08:05 AM |
Torque on driveshaft bolts?
The 4 bolts that secure the driveshaft to the BMW drive axle assembly? Was under the car and figured I would check those and found that I could get about 1/8 turn on all four of the nuts without much effort.
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| hauss |
11-04-2020 01:39 PM |
I red lock tighted mine recommended you do the same for the half shafts had one come apart bolts on flange came loose.
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| xb-60 |
11-04-2020 03:19 PM |
Quote:
Originally Posted by SBSerpent
(Post 1484846)
The 4 bolts that secure the driveshaft to the BMW drive axle assembly? Was under the car and figured I would check those and found that I could get about 1/8 turn on all four of the nuts without much effort.
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What size are the bolts? What thread pitch (fine thread, I would expect)?
What grade are the bolts?
Cheers,
Glen |
| spdbrake |
11-04-2020 05:58 PM |
Driveshaft to
final drive flange (M10compressed nut) . .60 Nm (44 ft-Ib)
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| xb-60 |
11-04-2020 07:08 PM |
Quote:
Originally Posted by xb-60
(Post 1484863)
....What grade are the bolts? ....
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If they are M10 standard pitch (1.5mm), and grade 8.8, then torque suggested is 55Nm
They may well be grade 10.9 for driveshaft to final drive; if so, torque suggested is 75Nm
Cheers,
Glen |
| spdbrake |
11-05-2020 03:48 AM |
Those are BMW specs for the E36 (BDR diff). They're M10- 1.25 pitch 10.9 but in shear not tensile load. No real need to smoke the torq up. My original D/S had pressed in studs, and the replacement BDR D/S needed bolts so I used M10- Arp hardware.
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