Positive Air; Hydraulic Systems; Sfa; Sfa Air - Marzocchi TXC Manual Del Propietário

5.2.3 Positive Air

Positive air is the elastic element in air fork legs and its task
is to support the riders' weight.
Positive air pressure is equal to spring hardness; by
increasing the pressure the suspension is less compressed
under the riders' weight and vice versa if the pressure is
reduced, the fork is compressed more.
N
OTE
In some fork legs the air valve may not be in the
central position, in others however, it could be
protected by a rubber cap marked with «AIR».
For infl ation, some systems require the use of a specifi c
adapter, which must be applied to the pump. This adapter is
supplied with the fork leg
• Remove the protection cap
• Tighten the pump adapter on the valve and infl ate till
reaching the pressure you wish.
• Refi t the protection cap.
Rider's kg
weight lbs 120-155 155-180 180-210 210-220+
Positive air bar 2.00-2.75 2.40-3.10 2.90-3.80 3.60-4.50
pressure psi
Table 10 - Positive air pressures
N
OTE
The procedure described above is not valid for the fork legs
equipped with SFA and ETA cartridges.
68
AIR
55-70 70-80 80-95
30-40 35-45 42-52

5.3 Hydraulic systems

5.3.1 SFA

Available adjusters
SFA air valve
PAR air valve
For correct calibration proceed in the following order:
• Completely defl ate the SFA chamber.
• Adjust the pressure of the PAR air chamber.
• Adjust the pressure of the SFA air chamber.

5.3.1.1 SFA air

The positive air chamber is pressurised by means of the SFA
valve. The pressure of the negative chamber is automatically
adapted on the basis pf the positive chamber pressure.
Correct adjustment of the SFA chamber is that allowing to
reach initial sag requested (see par. 5.2).
AIR
95-110+
• Remove the protection cap.
• Tighten the pump adapter on the valve and infl ate till
52-65
reaching the pressure you wish.
• Refi t the protection cap.
Rider's
weight
SFA air bar
pressure
Table 11 - SFA air pressure
Positions
Left upper cap
Left wheel axle clamp foot
kg < 65 65-75 75-90
lbs < 145 145-165 165-200
7 8
psi 103 117
> 90
> 200
9 10
132 147