wear of brake pad.
Put LIGHT BEE
QL3000DY
on central support. Rotate wheel and observe disk passing by
pad to check whether disk has indentation or
has been
bended. If disk doesn’t have
friction with
brake pad
, slight transverse motion is acceptable. If disk has friction with
brake
pad at any point, replace it.
!
Don’t touch the surface of disk or pad with
bare
hands
,
grease on your
fingers may lower braking force.
!
Prevent oil or braking oil from touching disk or brake pad. If
it happens
,
replace brake pad, dismount disk and clean them with isopropyl alcohol.
10.2 Maintenance
10.2.1 Deflate brake
Deflate the brake on LIGHT BEE
QL3000DY
according to the following steps:
• Arrange necessary tools for deflation:
• short needle cylinder for pump
• long needle cylinder for brake caliper
• original brake mineral oil
!
Only original brake mineral oil is allowed in deflation. DOT brake fluid is
banned in any condition.
• Switch the stroke adjustment device on brake handle to (+)
position. (
rotate
adjustment device clockwise on right brake and rotate adjustment device anticlockwise
on left brake at the same time)
• Dismount brake caliper from brake (see “dismount brake caliper”). Ensure that
place
brake caliper at a position lower than other line.
• Dismount brake
pad
(see “replace brake
pad
”). When it is used to fix the shock
insulator of brake pad, fix piston on brake caliper in case that brake caliper bounces after
pressing brake handle. Use rubber band to fix shock insulator.
• Fix brake caliper above brake pump (brake handle).
When there is
no
oil in long needle cylinder, lift brake caliper above brake pump and
remove long needle cylinder from adapter.
• Dismount head bolts of brake caliper. Then, use long needle cylinder containing mineral
oil into brake caliper and fasten it with
an
8mm wrench.
• Fix brake handle at the angle of 45°
• Dismount
deflation
screw and prevent oil leakage. Remarks: the bolts are made of
plastics. Be careful in operation in case of damages. Press short needle cylinder into the
position of plastic bolts.
• Given the low position of brake caliper, the oil pumped from long needle cylinder flew
out from the top of short needle cylinder.
• When all oil in long needle cylinder is pumped out, use long needle cylinder to pump
the oil in oil line back. Repeat the process until there is no bubbles at the top (the
position of brake pump).
• When there is no oil in long needle cylinder, lift brake caliper from brake pump and take
long needle cylinder out with adapter.
• Put
brake caliper
down slowly. When oil flows out from the hole of brake caliper, put
deflation
screw
back.
• Dampen brake caliper.
• Take needle cylinder down from brake pump carefully and place plastic bolts at the
corresponding positions. (maximum torque
is
40Nm,
otherwise may
damage the bolt
).