The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: Bill Conquest on October 12, 2008, 07:40:20 PM

Title: wheel bearing grease
Post by: Bill Conquest on October 12, 2008, 07:40:20 PM
Hi - Does anyone know how to remove the sleeves on each side of the front  wheel so I can lube the bearings with the tool I got from cycle works? They are both the same on ea. side - with what looks like a center sleeve inside. Didn't wnt to go hitting on something that I shouldn't .. any help would be great! It's a '79 r65.
Thanks Bill Conquest
Title: Re: wheel bearing grease
Post by: lamont on October 12, 2008, 08:37:22 PM
i think those are called seals, you can pry them out with a screw driver , or use a seal puller ,either method will probably ruin them, you will need new ones on hand
Title: Re: wheel bearing grease
Post by: montmil on October 13, 2008, 01:17:26 PM
quote author=Bill Conquest link=1223858420/0#0 date=1223858420]Hi - Does anyone know how to remove the sleeves on each side of the front  wheel so I can lube the bearings with the tool I got from cycle works? They are both the same on ea. side - with what looks like a center sleeve inside. Didn't wnt to go hitting on something that I shouldn't .. any help would be great! It's a '79 r65.
Thanks Bill Conquest[/quote]

Grease seals can be removed with the aid of a flat-blade screwdriver... gently! You do not want to booger up the machined surface inside the hub.

You may also find a "top hat" shaped thrust sleeve on one side. Maybe both sides. Just watch for pieces coming away with the seal. Note the installed position and which side of the wheel hub it is on. After that, it's easy to remove the bearings, clean them, re-grease 'em and put it all back together.

Pay attention to the proper axle and pinch bolt tightening sequence and the axle's torque specs. New seal are available at your local bearing supply store. Take an  old one for comparison. The metric size is usually cast on the exterior surface of the seal.

Monte

Title: Re: wheel bearing grease
Post by: Bill Conquest on October 13, 2008, 05:34:30 PM
Thanks for the ideas - i'm still a little confused, there are "top hat thrust sleeves" on each side that will move in & out about a quarter inch but not come out. How do I remove these? And where are the seals ? Sorry about my ignorance - it's all a learning experience!
Thanks, Bill Conquest
Title: Re: wheel bearing grease
Post by: montmil on October 13, 2008, 06:44:42 PM
Quote
Thanks for the ideas - i'm still a little confused, there are "top hat thrust sleeves" on each side that will move in & out about a quarter inch but not come out. How do I remove these? And where are the seals ? Sorry about my ignorance - it's all a learning experience!
Thanks, Bill Conquest

The metal thrust sleeves, often referred to as a "top hat" due to their resemblance to, well, a top hat, can be wiggled a bit after removing the axle and wheel from the bike. There's nothing wrong. They're just going commando. The sleeves will come out with the seals. The "movement" disappears after reinstall and torquing the axle. The longer tube spacer inside the hub takes up the slack and the axle passes through the spacer.

The seals (grease seal, oil seal, whatever you're keeping from leaking out) are usually made of a firm rubbery material with a small spring on the interior, an overlaid metal  outer circumference and a "lip" in the inner i.d. that must be lightly lubed before slipping the seal over the previously cleaned axle.

A 32mm socket makes a great seal drive tool. Just eyeball the seal as you deftly tap it home; keeping everything square to the machined hub-to-seal joint.

Do you have either a Haynes or Clymer repair manual for your scooter? Your seal job will be so much more enjoyable -and doable- if you have a solid base of reference. I know you just can't wait to dive into rehabbing those front fork seals that are looking kinda weepy.

A few wiseacres here abouts might suggest that you RTFM, but Justin, aka: The Big Honcho, knows I'm a gentleman and wouldn't do something so crass... ;D

If you get stuck, post up and we'll all help you to git 'er done. Larry the Cable Guy. Awful movie. [smiley=lurker.gif]
Title: Re: wheel bearing grease
Post by: Justin B. on October 13, 2008, 10:07:38 PM
Very nicely put, Monte.  I'll put that reply in your file for the next parole hearing...  ;D
Title: Re: wheel bearing grease
Post by: Bill Conquest on October 14, 2008, 02:38:42 AM
Hey, Monte - What's a Haynes manual? ( just kidding). Thanks for the info & your patience, i'm sure i'll work it out o.k.
Bill Conquest
Title: Re: wheel bearing grease
Post by: BigJohn on October 14, 2008, 05:34:03 AM
You're not talking about the nylon rings BETWEEN the bearings are you?  They fit snugly on the center spacer tube and prevent it all from coming apart when changing a tire on the side of the road in the middle of the night.  Those rings are a friction fit on the spacer tube AND are just a little too large of a diameter to pull out as an assembly.  I drifted the spacer tube out leaving the nylon rings in the hub and then pulled them out individually with a pair of needle nose pliers. On reassembly I drifted the whole spacer tube/nylon rings back in as one piece.  Worked good.