Hope Tech C2 Brake - Manual (Page 12)

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6. Bed in the new pads (see section 2.6).
3.3. Bleeding the brake
Bleeding the brake is the procedure whereby new brake fluid is introduced into the
system either as a replacement or to flush out any trapped air.
There are several reasons why a bleed operation may be necessary, for example
shortening a brake hose, changing the brake fluid, or to remedy a situation described
later in the troubleshooting guide (section 4).
There are two distinct procedures for bleeding your disc brake depending on which
brake system you have purchased, please make sure you select the correct procedure.
But first a few important notes on brake fluid.
Brake fluid
This Hope disc brake contains DOT 5.1 hydraulic brake fluid which is available from
motor accessory stores. If you cannot obtain DOT 5.1 then DOT 4 is acceptable but you
must flush out all the old DOT 5.1 first.
Use of other types of brake fluid, in particular mineral oil, will seriously damage your
brake and cause brake failure.
Please read the care instructions that come with the DOT brake fluid, in particular we
draw your attention to the following:
•
Use only new brake fluid from a closed bottle and replace the bottle’s cap
afterwards to prevent contamination of the fluid (DOT 5.1 fluid absorbs moisture).
•
Brake fluid will strip paint so wipe off any spillage immediately and clean the area
with isopropyl alcohol.
•
Brake pads contaminated with brake fluid will need replacing because the braking
performance of the pad will be greatly diminished.
•
Discard old brake fluid in a responsible manner and do not pollute drains or the
environment.
Bleeding the XC4 and Closed 2 disc brake
Item number references refer to the diagram of the Pro lever in section 5.1. The
procedure is identical if you have a Sport lever.
Wear safety glasses.
1. Remove the wheel and brake pads to prevent contamination.
2. If necessary reposition the brake lever so that the lever and master cylinder is
horizontal to the ground.