Table of Contents
Advertisement
ChAINrING WOBBLE ChECk
When installing a new right crank arm or reinstalling a right crank arm with a new chainring, the crank arm
must be installed in the position that produces the least amount of chainring wobble. perform the following to
determine that position.
1. place a reference mark in one corner of the end of right spindle.
2. rotate the spindle so this reference mark sits at 12 o'clock.
3. fit the right crank arm onto the spindle so the arm points to 6 o'clock.
4. Strike the arm with a plastic mallet so the arm is securely seated on the spindle.
5. rest a hand against the frame down tube. lightly touch the inside of the chainring with the end of a
forefinger.
6. rotate the crank arm, and note the amount of wobble in the chainring.
7. remove the crank arm from the spindle
8. rotate the spindle so the reference mark is now at 3 o'clock, and repeat steps 3-7.
9. rotate the spindle so the reference mark is at 6 o'clock, and repeat steps 3-7.
10. rotate the spindle so the reference mark is at 9 o'clock, and repeat steps 3-7.
11. note the position that produces the least amount of chainring wobble. Install the crank arm with the
reference mark in this position.
pEdAL
the right-side pedal uses right-hand threads. the left-side pedal uses left-hand threads. the end of each
pedal stud is stamped with an l or r to identify the pedal threads. keep this in mind when removing and
installing pedals onto the crank arms.
removal
1. rotate the crank so the arm with the pedal being removed points rearward.
2. place a wrench onto the pedal flats so the shaft of the wrench is horizontal and pointing forward.
3. break the pedal loose.
4. While facing the crank, hold the pedal with one hand and the wrench with the other. rotate the pedal
forward (normal pedaling motion) and remove the pedal.
5. repeat this procedure for the opposite pedal.
Installation
1. Inspect the threads of the pedal stud. Install the pedal with the right-hand thread onto the right side. Install
the pedal with the left-hand threads onto the left side.
2. apply grease the threads of the pedal stud.
3. turn the pedal into the crank arm. tighten the pedal stud as far as possible by hand.
28
Servicemanual_101212.indd 28-29
4. face the pedal, and fit a wrench onto the pedal flats (Figure 5-9). hold the pedal with one hand and hold
the wrench with the other.
5. rotate the crank arm rearward (opposite the direction of normal pedal rotation) until the pedal is snug.
6. torque the pedal to the specification in table 5.
CAUTION
metal burrs are often created when the pedal is tightened against the crank arm. Use a rag to
wipe up excess grease so you will not have to deburr a finger.
7. Use a rag to wipe excess grease from the crank arm.
8. repeat this procedure for the other pedal.
BOTTOm-BrACkET CArTrIdGE
the polaris
electric bicycle uses a bottom-bracket cartridge. the bottom-bracket on the polaris
®
bicycle is a cartridge that threads into the right side of the bottom-bracket. Its adapter ring threads into the
left side of the bottom bracket. the adapter ring on this cartridge has stan- dard right-hand threads. the main
body, however, has left-hand threads.
a bottom-bracket cartridge tool (park tool bbt-2) is required for removing and installing the bottom-bracket
cartridge.
removal
1. remove both crank arms.
2. Install the bottom-bracket cartridge tool onto the adapter ring, and remove the ring from the left side of the
bottom-bracket shell.
NOTE: the main body of the cartridge has left- hand thread. turn the cartridge clockwise to remove it.
3. Install the bottom-bracket cartridge tool onto the cartridge main body, and remove the cartridge from the
right side of the bottom bracket (Figure 5-10).
FIGUrE 5-9
FIGUrE 5-10
electric
®
29
10/12/2012 12:25:58 am
Hide quick links:
Advertisement
Table of Contents
