SRAM DualDrive 24, Техническое руководство, Страница: 66 / 76

64
SRAM VT 5000 / VT 3000
ASSEMBLY
Technical Manual 2006
A D J U S T M E N T D R U M B R A K E
• Unscrew adjusting screw (8, Fig. 1) until
the brake pads drag lightly.
• Actuate the hand brake lever forcefully
several times and then, if necessary,
turn the adjusting screw further so that
the brake once again brushes the wheel
as it turns.
• Lock hex nut (9)
Caution:
Check that all the brake system
components are functioning properly!
O P E R A T I O N
To get used to the new brake, operate the
brake lever carefully to acquire a feel for
the drum brake’s deceleration.
Caution:
• If the bicycle is left standing for long
periods, a rust film in the brake drum
may increase braking effect. For this
reason, start by braking gently a few
times the next time the bicycle is used
to remove the rust film. This will
prevent the brake from aggressive
braking.
• On long, steep downhill stretches, also
use the second brake (rear wheel)
alternately to prevent the brakes from
heating up excessively.
• Do not touch hub after cycling – risk of
burning!
F I T T I N G W H E E L I N
F R O N T F O R K
• Lace the wheel as normal.
• Placing the wheel in front fork. The
brake lever (1, Fig. 1) goes on the left
side viewed from behind the rear of the
bicycle. Guide the top end of brake
anchor plate (2) into the brazing part of
the fork if fitted. If there is no brazing
part, use VT pipe clamp (3)
.
• Slide washers or snap rings onto axle
ends.
• Fit axle nuts (4) with wrench 15 mm,
torque 30 – 40 Nm (266 – 350 in.lbs.).
• Tighten screw connections on VT pipe
clamp (5/6), torque approx. 3 Nm (27 in.lbs.).
Caution:
The clamp must be seated on the fork
with no play.
C O N N E C T I N G D R U M B R A K E
Caution:
Only use brake levers with a cable
moving distance of at least 15 mm and a
leverage of “i“ = 3.8 – 4.2 (Fig. 3).
• Fit cable stop (7, Fig. 1) with adjusting
bolt (8) and nut (9) and insert into the slot
on the brake anchor plate (10).
• Turn adjusting bolt down by approx.
2
/
3
and route the brake cable from the
brake handle.
• Push lower brake cable end through
adjusting bolt.
• Insert lower cable housing end into
adjusting bolt.
• Thread brake cable end (11) into fork
unit (12).
• Tighten screw (13) slightly.
• Attach fork unit to brake lever (1).
• Pull brake cable end taut with pliers
so that fork unit can still be attached and
removed (important for changing wheel).
• Tighten screw (13).
Caution:
For NL version drum brake hub with
special lever (1, Fig. 2), only use original
NL brake cable (fork unit (12, Fig. 1) is
not suitable).
1
3
2
2
10
1
4
5
3
6
1
7
11
12
13
8
9
a
i =
l
—
a
25
l