540 guibo bolt torque setting

[yaofeng]

Bentley makes no mention of any M14 bolts in the propeller shaft section. The only torque setting mentioned of the M14 bolt in section 26-1 propeller shaft of the torque setting book is for E31/E38/E39 for 140 N-m.

What is the torque setting for these six bolts?

[yaofeng]

In absence of specific published torque value for the M14 guibo bolts. I used the general setting for M14 grade 10.9 bolt, 200 N-m.

[Bill R.]

e31,38,39 as listed here.





In absence of specific published torque value for the M14 guibo bolts. I used the general setting for M14 grade 10.9 bolt, 200 N-m.

[yaofeng]

I came across this yesterday again as I fitted the propeller shaft to the guibo. All six bolts are M14x1.5, grade 10.9. According to the general value in the book it should be tightened to 200N-m, or 148 ft-lbs. I did only 90 ft-lbs thinking they were M12 so I'll go back under again today. 140 n-m is for M14x1.5 grade 8.8 bolts.