Boxer/Ducato/Relay U-Bolt Torque setting? (5 Viewers)

[Big Colin]

Hi all,
I’m installing air suspension on my 2015 Boxer and I had to undo the u-bolts on the rear axle. I’ve reinstalled the u-bolts in the same location/orientation but I’m wondering about the torque settings - does anyone know? They were a pig to undo, so I’ve temporarily done them back up ‘good and proper’ but I’m a huge fan of “Tights tight, but too tights f***ed! Any advice please?

Thanks so much in advance.

 

[Carolyn and Kev]

How much torque for axle U bolts?


U-Bolt Torque Recommendations

Thread Size & Nut Hex Size	MaxTorque (ft lbs.)
1/2 (3/4 Hex)	90-95
9/16 (7/8 Hex)	120-130
5/8 (15/16 Hex)	170-180
3/4 (1-1/16 Hex)	275-300

Google and Piston heads info for you ....

 

[Orion]

From the installation instructions for the Dunlop rear air kit: 110Nm/ 81lb.ft

https://www.marcleleisure.co.uk/media/productattachment/f/i/fiat_x244_ducato_2002_-_2006_4_.pdf