Qu1ckn1ck Posted August 2, 2018 Report Share Posted August 2, 2018 Can some kind person please advise the torque setting for tightening the rear hub nuts on a Rotoflex GT6 Mk3. We appear to have a slack bearing on the offside hub. Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 2, 2018 Report Share Posted August 2, 2018 5/8unf 100-110 lbft hub flange to shaft Pete 1 Link to comment Share on other sites More sharing options...
trigolf Posted August 2, 2018 Report Share Posted August 2, 2018 From memory - it's 110lb ft, IIRC. I would unscrew the hub nut completley first and check the condition of the threads on the outer shaft. They tend to get stripped through successive bearing changes. After all they're 45 years old now. I would also use a new nyloc nut - make sure you obtain the correct spec item - it's quite a shallow nut, that allows the nylon insert to bite on the fully formed threads of the shaft - they're not fully formed to the tip. If your not experiencing rumbling from that side I would want to investigate the hub end float spacer and shims before re-torqueing. 1 Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 2, 2018 Report Share Posted August 2, 2018 we did Gully's hub bearing a few weeks ago littl bit of trial and error pre load to free play ,some measuring of shims and spacer and its done , longest job was pulling the old race off but paul bought a nice thin puller and ive still got it in the cupboard as area spares if you need it its still going Pete 1 Link to comment Share on other sites More sharing options...
Qu1ckn1ck Posted August 2, 2018 Author Report Share Posted August 2, 2018 Thanks all. Got new nuts and washers on order from Rimmer and will investigate further once they arrive. Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 2, 2018 Report Share Posted August 2, 2018 This is simple , if you can do the nut up its either been left undertorqured or loose I would just check its tight , the torque is not overly critical, if tightening reduces the play , then its Was it left loose Has the bearing deteriorated Keep the new nut for a potential rebuild This depends on is it a solid spacer and shims or has a collapsible spacer between the races You cant crush the solid tube you can retighten a collapsible to reduce float If you get windy about the state of the races then its a strip down to examine Link to comment Share on other sites More sharing options...
trigolf Posted August 3, 2018 Report Share Posted August 3, 2018 Pete, If this is a standard Rotoflex driveshaft we are talking about - there is no collapsible spacer - its fitted with a solid spacer picked from one of 5 sizes available + 1 or two 3 thou shims, to achieve the correct end float,ideally. Gav Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 3, 2018 Report Share Posted August 3, 2018 Yes i know but , there are some out there edit on 2000/25000/Stag/TR Pete Link to comment Share on other sites More sharing options...
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