

| Subject: | Re: Why my rear axle nuts got loose |
| From: | Fillmore West |
| Date: | Thu, 24 Jun 2010 10:56:54 -0600 |
Just went through all of this Not too bad of a job even for an amateur like myself. Here's the Tool I use to torque the Axle Nut. I stand out 2 ft from center. Now you know my weight !!! ;o) PS: List: Thanks for all of your help with the Auto Trans Final Drive oil change! In the end I just took the pan off. (wanted to take a look in there, and to see if there was a layer of crud on the bottom of the pan. There wasnt ) But, the ATF looked like brown gravy! Doubt it had Ever been changed! (Looked clean on the dip stick? ) So folks; change it! :o) On Thu, Jun 24, 2010 at 4:21 AM, Frank Condelli <RAlanen@aol.com> wrote: > In a message dated 24/06/2010 12:01:53 A.M. Eastern Daylight Time, > LISTSERV@GERRY.VANAGON.COM writes: > > MJ. the bearings are not expensive. See here > _Vanagon New > Parts_ (http://frankcondelli.com/sales.htm) under "Wheel Bearings" > heading. > The rear wheel bearings can only be changed by removing the hub bearing > carrier. The bearings must be pressed out the side where the CV is bolted > to > the stub axle, so you had better replace them both and make sure the > spacer > is of the correct length listed on my website I just mentioned to you. > Also, read the following I wrote for the LiMBO newsleter some time ago : > > > "Folks, as a long time Vanagon shop mechanic, I need to comment on the > article in the last issue of The Transporter I received yesterday, about: > "R&R > The Rear Wheel Bearing Assembly....on page 7. There is incorrect > information given in that article which could lead to problems and > possibly an > accident. First and foremost the torque spec on the rear axle nut is 360 > ft. > lbs. not 253 ft. lbs. as stated in the article. See page 42.4 in the > Vanagon Bentley workshop manual. Improper torque on this nut can lead to > problems. Secondly, replacing worn bearings with used bearings is not > mechanically sound advice. Especially since the rear wheel bearings and > seals are > inexpensive items. The only "special" tool needed to change the bearings > in > that hub is a pair of snap ring pliers. Removing the bearings from the hub > can be easily done with a drift and hammer. They are not pressed in > requiring any special press or bearing tool. Torqueing of the axle nut > can be > done with the proper torque wrench or bring the vehicle to a truck repair > shop, or use the proper socket with breaker bar with an pipe extension. > Calculate your weight and then stand on the end of the extension bar the > proper > distance from the centre of the axle to produce 360 ft' lbs. of torque. > Vehicle on its wheels, on the ground, rear hand brake fully engaged and > wheel > being torqued blocked. Now, more to the problem, replacing the bearings > without checking the spacer, hub, splines and nut for wear can also lead > to > more problems. The rear bearings are in a fixed length environment. The > distance is governed by the width of the bearing races, the spacer and the > hub. If any of these are worn then the distance is incorrect and > tightening > the nut will not make it better. The nut will come to the end of its > threads on the spline and can certainly be torqued to spec and still not > apply > the proper pre-load on the new bearings due to spacer, hub and or nut > faces > being worn. Trust me I have seen all these scenarios in my shop. The > spacer and hub must be measured against the length of a new one. The > Bentley > manual does not state these dimensions. I have measured new spacers and > they are 42.8 mm. I have documented that measurement on my _sales webpage_ > (http://www.frankcondelli.com/sales.htm) where the listing for that > spacer > resides. The hub width, I do not know as I have not had the opportunity > to > have a new hub pass before me for measurement. However, if the two end > faces of the hub were showing signs of wear I would be suspicious. Also, > the > face of the nut is important to be in good condition. Any reason to > suspect > it would be reason enough to replace it with a new one. One last point is > to check the splines in the hub and on the axle for wear. If the bearings > were run loose for any considerable time, then the hub may certainly have > worn the splines and then the axle and hub should be replaced. To avoid > all of the problems you may see with this issue it is highly advisable to > check the rear wheel bearings at least once a year and repack them with > grease. Whenever I find more than 1/4" movement when trying to rock the > rear > wheel with the van elevated off the ground and hand brake off, I first > loosen > and re-torque the axle nut, then if the 1/4" movement is still there it's > time to look into renewing the rear wheel bearings and check the spacer, > hub > and nut. I hope this helps someone before they follow the misinformation > and cause more problems than need be. > > > > >>>>>The outer wheel bearings are fairly inexpensive. So I think I am > going to h= > ave them replaced. I am going to assume that the inner wheel bearings are= > =A0 still OK.=A0 It would be a much bigger job to replace them.=A0 Am I > mak= > ing a mistake=A0 by this assumption?=A0 =20<<<<< > > > > > > Cheers, > > Frank Condelli > Almonte, Ontario, Canada > '87 Westy & Lionel Trains (_Collection for sale_ > (http://frankcondelli.com/trainsal.htm) ) > _Frank Condelli & Associates_ (http://frankcondelli.com/busindex.html) - > Vanagon/Vanagon Westfalia Service in the Ottawa Valley > _Vanagon Stainless Steel Exhaust Systems_ > (http://frankcondelli.com/exhaust.htm) > _BusFusion_ (http://www.busfusion.com/) a VW Camper camping event, > Almonte, ON, June 10 ~ 13, 2010 >
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