Bearings

Question 1

What are the general steps for servicing bearings?

Answer 1

1. disassemble
2. thorough cleaning
3. inspection
   races: check for pitting
4. replace worn bearings
5. apply new grease to bearings and races
6. assemble
7. adjust bearings
    all slack needs to be removed
    bearings should spin freely, but should not wiggle or have play

Question 2

When servicing wheel bearings, what side should you remove your cone from?

Answer 2

remove cones from left side (non-drive side)

Question 3

What are the 2 styles of cranks? (OR what are the 2 styles of crank arm extraction tools?)

Answer 3

square taper cranks (blue tool)
splined cranks (black tool)

Question 4

What are the 2 designs of headsets?

Answer 4

 older bikes used threaded forks
 most bikes built since the ‘90s use threadless forks

Question 5

What are the 2 styles of bottom brackets?

Answer 5

Sealed Cartridge Style Bottom Bracket Bearings
* no lubrication or adjustment required - in use since early 1990’s
* on most bikes, the right side uses a left hand (reverse) thread

Three-piece
- Assembling spindle may be asymmetrical
 longer half should go on the right side of the bike (drive side)
 any markings on the spindle should be readable from the riding position