thebishbus Posted April 14, 2017 Share Posted April 14, 2017 Could anyone tell me if my 2001 Hymer B584 Ducato 14 should have any detectable play in the front wheel bearings. It has 2 taper roller bearings and a spacer between them per hub. There are 18 spacers available, but less than 1mm width difference between them. My question is , should I use a spacer that gives no detectable play, or one that gives just detectable play . Over the last 4 MOT's some testers have advised about this detectable play and some have not. I have always thought that taper roller bearings should not be pre-loaded. Advise needed before I replace them please, Brian B. ps with the front jacked up there is no bearing noise when spinning the wheels,just detectable play when rocking the wheels top to bottom both sides. ( 37000 miles ) Link to comment Share on other sites More sharing options...
keninpalamos Posted April 14, 2017 Share Posted April 14, 2017 I can remember the days of the castlated nut and split pin and it was a case with tapered roller bearings that a small amount of play was better than over tightening the bearing. So you adjusted as close as you could to no play. My '99 Ducato front end has had a small amount of play on the left side since I bought it in 2003. Sometimes gets a mention or advisory on the MOT and it's just the tester covering his a#¥> , sorry, self. So I would sooner have it mention as above than have it fail half way up a mountain pass Link to comment Share on other sites More sharing options...
thebishbus Posted April 15, 2017 Author Share Posted April 15, 2017 Thanks for the reply. Yes I have always left a bit of play in the taper roller bearings on my old cars and had no problems. I noticed that the MOT testers that mentioned the play were young chaps ,the ones that did not were older men. Is it a case of old school new school I wonder.? Brian B. Link to comment Share on other sites More sharing options...
keninpalamos Posted April 15, 2017 Share Posted April 15, 2017 Yes, I think you have answered that one. It's been a long time since I made a living in the motor industry. From development and design to motor racing. Some of the motor techs now admit to having never seen a piston or crankshaft or no what a decoke entails which gives us an idea of how much the mechanical engineering side of vehicles has improved Link to comment Share on other sites More sharing options...
bigparkie Posted April 16, 2017 Share Posted April 16, 2017 There are at least 4 ways of adjusting preload on taper roller bearings. 1 ,no shims or spacers, you adjust by tightening until virtually all free play is removed then locked with a split pin etc. 2, a solid spacer, the nut is tightened to a set for the figure, also called are right bearings. 3, a selectable shim which sets the preload. 4, a collapsible spacer, you tighten the nut till the correct preload is achieved then stake the nut. Regards Richard Link to comment Share on other sites More sharing options...
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