gadget Posted July 6, 2017 Share Posted July 6, 2017 (edited) Finally got around to fitting a replacement water pump and one of the cover bolts wouldn't come out and snapped on me I took the pump housing bracket thingy off and spent a while removing the stuck bolt thread and cleaning everything up. It's all ready to bolt up now but i can't find the torque numbers for the 5 x M10 bolts and 1x M10 nut that bolt the bracket to the block. Anyone come across the numbers? Edited July 6, 2017 by gadget Quote Link to comment Share on other sites More sharing options...
sierrafery Posted July 7, 2017 Share Posted July 7, 2017 (edited) For the 5 coolant pump bolts is 9Nm, the other M10 if it's the mounting plate bolt to pump then it's 25Nm Edited July 7, 2017 by sierrafery Quote Link to comment Share on other sites More sharing options...
gadget Posted July 7, 2017 Author Share Posted July 7, 2017 The M10 bolts hold the pump housing PEU102770 to the block. I haven't found any reference to the torque figures for these fastenings. The bracket sits in dowels and isn't under any real stress so i doubt they're critical. They also have white thread lock on them, which i've not come across before. Quote Link to comment Share on other sites More sharing options...
sierrafery Posted July 7, 2017 Share Posted July 7, 2017 i just told you the torques from the book where they are easy to find, e/g. nr 3 at "refit":... so you can find the 25Nm for the steering pump bracket in the same manual Quote Link to comment Share on other sites More sharing options...
gadget Posted July 7, 2017 Author Share Posted July 7, 2017 I can find power steering pump bracket bolts 27 Nm in the online manual at workshop-manuals.com. 27 Nm is in the M8 torque region and if you read the power steering pump refit blurb it says "Position mounting bracket to PAS pump, fit but do not tighten bolt." The bracket they refer to here is a small metal plate secured with an M8 bolt. 25/27 Nm just seems a little low for an M10 Quote Link to comment Share on other sites More sharing options...
gadget Posted July 7, 2017 Author Share Posted July 7, 2017 I've put it on and set the torque for the bolts at 45 Nm. It felt about right for the bolt size. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted July 10, 2017 Share Posted July 10, 2017 Bolt size isn't really the reason for the torque here, it is to provide the proper squash on the o-ring and to avoid distorting the aluminium casing. Quote Link to comment Share on other sites More sharing options...
gadget Posted July 10, 2017 Author Share Posted July 10, 2017 The o-ring is in an island in the bracket and the mount points are quite a way from it. O-ring compression is from the top 4 fittings and I would think that any amount of resistance from the o-ring part of it would cause some distortion to the rest of the bracket? My reasoning on torque versus bolt size was that if something with M8 torque is all that was needed then landrover wouldn't have spent the extra tuppence for the M10. It hasn't fallen off and it doesn't appear to be leaking Quote Link to comment Share on other sites More sharing options...
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