Posted by peter r on August 6, 2009, 12:38 am, in reply to "Re: Transmission , Crank bearings Failure"
144.139.163.35

http://www.artcarr.com/page/news/1.acpp Pat , Seems that not just the trans/converter or the external force but also internal force . Just to complicate things , a bit more reading but it also gives some engine/assemble reasons for thrust failure . Also more google , small block Fords v8 , 302 etc have center thrust like rover and as well as trans/converter as cause , crank its self alignment ect as in link . Suggestions if crank not right with new bearings just happens again . Which would be proof enough but not much value in the scheme of things . Leave you to it Pat hope you can sort something . Cheers Peter --Previous Message-- : Thanks Peter : Yes the rebuilt Auto trans and change over : T/C was running behind the 3.9 and I have : already checked the thrust bearings they : have a small amount of wear but all within : allowable tollerances. : I think the thing must have started going : bad after the 4.6 was fitted. : I am contemplating finding someone that can : test the auto and T/C to see if there was : something amiss. As for trying for a claim : through the auto/trans rebuilder it's : probably not feasible as the warranty period : has well and truly lapsed even though the : rangie was off the road for twelve months : whith the start of that period being only : six months after it was rebuilt. : Yep I know of Ashcroft's I might give them a : call and see what they have to say. : I know that I have not done anything wrong : myself to cause this failure but it's all : pretty much academic now. : Thanks for your support Peter. : Regards:- Patrick M. : : --Previous Message-- : : : http://www.ashcroft-transmissions.co.uk/index.html : : Hi Pat , it`s all new to me but what i was : sorta suggesting was maybe the : trans rebuild is the problem and maybe a : chat with the recoer is in order . : : Do you know if yours was rebuilt , trans : /converter or was it change over . : : If you still have the 3.9 have you had a : look at the centre bearing in it if it ran : with the rebuilt trans/converter at all . : : Because of the Ks on the 4.6 if the 3.9 ran : it and that`s where the problem lays , the : 3.9 should tell . : : I know the 3.9 may be a bit used but i just : had a jemmy with a screw driver on one in : the shed that has about 250K on it and there : is no seeable movement of the crank . The : sumps off it and on the engine stand , so : was doing it at either end . : : Do you know of Ashcroft Transmissions in the : UK , i`ve only read of them but they seem : very knowledgable on Zfs as well as other : things , they also seem very approachable . : : If what is happening with your is actually : trans/converter related i`d expect they : would have heard of it . Send them an Email : ? Link to their site on top . : : I think anyone you ask you need to not tell : them what you suspect first though to see if : it is at all common nowdays as i say i`ve : not come across it . : : Feel for ya Pat and i don`t see how you : could have altered the outcome with anything : you could have done . : : All the best , Peter . : : --Previous Message-- : Hi Peter : Thankyou very much for the link it probably : hits the nail on the head, even though the : tranmission and torque converter were : rebuilt not so long ago : I now can appreciate that this maywell be : the only explination as to what has gone : wrong, thanks again for your time and : efforts. : Yeah the centre bearing which has the thrust : bearings attached to the top half is the : problem and the rear side facing the gearbox : was completely worn away. : F&%k, looks like I have to rebuild the : autotrans, torque converter and engine : again, just what I needed. : Regards:- Patrick M. : --Previous Message-- : : : Pat , the link should work have a read . : : Note the dates given 1980s , things may be : very different by 1992/3 . : : I seem to remember you saying your trans was : rebuilt recently . : : I wouldn`t have thought a converter could : balloon but this suggests they can and being : ZFs run high pressures ? : : Spent some time googling and nothing like : your problem being Rover specific could be : found and if a fault is common it is usually : well reported . : : Still think the centre bearing should be the : tell though and it should be one side worn : more if the diagnosis is correct . : : cheers : : : : : : http://www.gnttype.org/techarea/transmission/trantsb.html : : : : : : :