BMW 2002 FAQ - Should I replace the bearings when replacing rotors?

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Thread Topic: Should I replace the bearings when replacing rotors?

Date: 12-13-05 07:48
From: Lars in Kansas City, MO

Subject: Should I replace the bearings when replacing rotors?

I will be ordering some rotors soon and was wondering should I replace the bearings too or is there a way to tell if they are good? Also, do new rotors come with the bolts to attach them to the hubs? If not, where can I get them?
_________________
Lars
1974 2002
Weber 32/36, Urethane Bushings, Pertronix Ignitor, Electric Fan, 320is Steering Wheel w/ 325 horn, MagnaFlow Muffler, 320 5 spd, 320 radiator.

Date: 12-13-05 09:49
From: c.d.iesel in South West Connecticut - Darien = The Right Coast

Subject: YOU Should replace the bearings when replacing rotors....

[img]AS PREVENTATIVE maintainence -
unless you know the history of the bearings (30 years ???)
always replace the bearings when you have the rotors and hubs off.
No, the rotor retaining bolts are not included, and are very high tensil
strength hardware. Available from any BMW dealer - DO NOT REUSE OR USE GRADE8 hardware store bolts ! Tighten to the correct torque and use BLUE Loctite 242 on clean threads. Also a good time to replace the caliper hoses if 20 + years old, flush the fluid using a pressure bleeder, and the clutch fluid at the same time. Then flush the fluid every year, or before every track event.
Have fun, work SAFE.

_________________
1976 BMW 2002 #2743711(sorry I sold it 12/25/06)
1986 BMW R65 650cc twin 19k miles
1964 BMW R27 250cc single 15K miles
2002 BMW 325xiTouring 29k miles
1984 MERCEDES-BENZ W123 300D Turbodiesel-188k miles fein-DIESEL

Date: 12-13-05 09:57 From: Lars in Kansas City, MO Subject: Thanks...forgot one question
The brake hoses are new. What kind of grease should be used? _________________ Lars 1974 2002 Weber 32/36, Urethane Bushings, Pertronix Ignitor, Electric Fan, 320is Steering Wheel w/ 325 horn, MagnaFlow Muffler, 320 5 spd, 320 radiator.

Date: 12-13-05 10:17
From: c.d.iesel in South West Connecticut - Darien = The Right Coast

Subject: wheel bearing grease ?

"Hi-Temp Wheel Bearing Grease" - available at any auto-parts
store, many brands.
Read the link also
http://www.shop.com/op/aprod-p23906602-k12-g-~hi+temp+wheel+bearing+grease-nover
_________________
1976 BMW 2002 #2743711(sorry I sold it 12/25/06)
1986 BMW R65 650cc twin 19k miles
1964 BMW R27 250cc single 15K miles
2002 BMW 325xiTouring 29k miles
1984 MERCEDES-BENZ W123 300D Turbodiesel-188k miles fein-DIESEL

Date: 12-13-05 05:28
From: BillWilliams in Maryland

Subject: Packing the new bearing properly is very important

If you do it by hand, the technique to insert the grease into the bearing so you can see it come out the other side, is an art. My son taught me how to handpack bearings. I used a bearing packer by Lisle tools on one of the bearings last week and was satisfied by the result in returned.

Also having the correct bearing, race and seal insertion tool is helpful to insert the races and seals. I got mine bearing and race tool from my son's tool box. If you do not have one, I guess a brass drift will suffice.
_________________
1972 2000tii Touring
1972 2002tii with A4 system
1972 2002tii found a motor
16' Mad River

Last edited by BillWilliams on 12-14-05 05:24; edited 1 time in total

Date: 12-13-05 06:00
From: ridr4lif in East Hampton, NY

Subject: Re: Packing the new bearing properly is very important

BillWilliams wrote:

You shouldnt need a bearing tool for the front bearings. You just kinda set them in place and then torque the spindle nut. Just make sure you pack them good. But definitely replace the bearings with the rotors.

Date: 12-14-05 05:21 From: BillWilliams in Maryland Subject: You are right about the bearings but setting the races
are easier if you use the right tool. Usually the races are done at the same time bearings are done. The bearing just drop in in a tapered fitting. _________________ 1972 2000tii Touring 1972 2002tii with A4 system 1972 2002tii found a motor 16' Mad River

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