SRAM DualDrive 24, Техническое руководство, Страница: 44 / 76

42
SRAM T3
MAINTENANCE
Technical Manual 2006
D R U M B R A K E
Install brake anchor plate (or exchange it):
• Place thrust washer (8, Fig. 8) over the
axle on the adjusting cone and fit
complete brake anchor plate. Position
washer (9) distance sleeve (10) and
screw on locknut (11).
• Push brake lever (7) to the stop and hold
it there to center the brake jaws in the
brake drum – tighten up locknut with a
torque of 15 – 20 Nm (133 – 177 in.lbs.).
A D J U S T M E N T D R U M B R A K E
• Unscrew adjusting screw (2, Fig. 8) until
the brake pads drag lightly.
• Actuate the hand brake lever forcefully
several times and then, if necessary,
turn the adjusting screw further in just
until the wheel starts spinning freely.
• Lock hex nut (3).
Caution:
Check that all the brake system
components are functioning properly!
M A I N T E N A N C E /
L U B R I C A T I O N
Coaster Brake:
Improved braking in third gear after
production date CW 38/96
• In case of repair, older hub models
(Fig. 4)
can be converted with a repair set (Fig. 5) .
It is important that all three parts are
replaced at the same time – new,
reinforced compression springs, planet
carrier with 4 lugs and ring gear with
4 lugs on the driving plate.
• Feature of the new or converted hubs:
When braking in third gear, the indicator
chain moves out of the deflection pulley
by approx. one chain link – after braking,
the tension chain returns immediately to
its normal position.
Caution:
The SARM hubs are provided with
permanent lubrication and are maintenance-
free under normal conditions. For type
MH 3115, however, particularly high
loading of the coaster brake can cause
to overcompensate. In this case, apply
special grease (Part No. 0369 135 200/...201).
to the brake sleeve or replace it.
Renew brake shell, when rhombic pattern
is worn out.
Cleaning of parts:
• All parts – except for the planetary gear
carrier – can be degreased in a cleaning
bath.
• The planetary gear carrier only needs to
be cleaned on the outside with a brush
so as not to degrease the planetary gear
bearing.
Lubrication of parts:
Use only SRAM grease (Part No. 0369 135 200/
...201) and standard bicycle oil.
• To lubricate the bearing points on
the planetary gear sets, position the
planetary gear carrier on its crown and
apply 2 – 3 drops of oil to the bearing
bolts – at the same time turning the
planetary gears so that the bearing
points are completely wet. Oil axle
through the axle bore and axle slot,
apply a thin coating of grease to the
outside.
• Oil the inside of the sun gears, grease
the outside teeth (fill the gaps in the
teeth).
• Oil outside teeth and carrier plate on
the coupling gear and lightly grease the
borehole from right and left.
• Do not apply grease to ring gear but just
oil the pawl pockets.
• Grease the brake cone in the borehole
and the friction spring.
• Spread grease on the inside and outside
of the brake shell.
• Fill lever cone with grease reserves for
brakes.
• Regrease ball retainer, line ball bearing
running tracks with grease.
Caution:
Do not use high-pressure water when
cleaning the gear hub (e.g. strong water
jets, high-pressure cleaners etc.) –
if water penetrates it could lead to
functional problems.
8
7
1
4
5
6
2
11
10
9
3
8