Crank Set - Diamondback SHEPPARD CYCLES Owner's Manual

Dust Cap
Axle Nut
Tapered Axle
Ball Bearing
Lockring
Adjusting
Cup
Standard Bottom Bracket Assembly (Cotterless)
64
SC/2012
SHEPPARD CYCLES ABN 60 082 376 289

Crank Set

The crank set refers to the Bottom Bracket axle and bearings,
Crank Arm
the Crank Arms and Chainrings.
Your bike may be fitted with either One Piece Cranks, where the crank
arms and bottom bracket are a single component, or Cotterless Cranks,
where the crank arms bolt onto the bottom bracket axle without using old
fashioned type cotterpins.
The one piece system is simpler and requires less maintenance, while the
cotterless system requires a little extra care.
Chainwheel
Inspection
The crank set should be checked for correct adjustment and tightness
every month. Cotterless crank axle nuts must be kept tight, and the
Fixed Cup
bottom bracket bearings must be properly adjusted.
Remove the chain and try and move the cranks from side to side with
your hands. The cranks should not move on the axle, and there should be
Axle
only very slight movement in the bottom bracket. Next, spin the cranks. If
they don't spin freely without grinding noise, then adjustment or lubrica-
tion will be needed.
Also check that there are no broken teeth on the chainrings, and wipe off
excess dirt and grease that may have built up on them.
Never ride your bike if the cotterless cranks are loose.
This may be dangerous and will damage the crank arms
beyond repair.