Beta RR 4T-250, Workshop Manual

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Workshop manual RR 4T - 250 - 400 - 450 - 525
23
5
– Push preassembled pump 23 until it comes into contact with
fork leg 5 .
– Manually screw in the foot valve.
– Stop the rotation of the case by carefully inserting the hexa-
gon on the case into the slotted hole at the lower end of the
tool.
In the upper part of the tool there are two diametrically op-
posite holes where a pin can be inserted to facilitate its
locking. However, the tool must on no account be turned
but should only be used to hold the fork leg inside components
in place.
– Using a 21-mm socket wrench, tighten foot valve 41 to the
prescribed torque (see table in Chapter 3 Tightening torques
- Specifications - Recommended products ).
41
h
13
Adding oil
– Push the sheath all the way up along the fork leg.
– Prepare the oil to be poured into the fork leg in a measuring
cup (see table in Chapter 3 Tightening torques - Specifications
- Recommended products ).
– Pour approximately 2/3 of the oil into sheath 13 , then pump a
few times to remove the air.
– Pour in the rest of the oil.
– Lower the leg holder on the fork leg until the wiper seal comes
into contact with the wheel holding foot.
– Wait a few minutes and then measure the volume of the air
(see table in Chapter 3 Tightening torques - Specifications -
Recommended products ) and if necessary restore the level.
NOTE: A smaller or greater volume of air, or the use of unsuit-
able oil, can completely change the behaviour the fork.
– Push sheath 13 up fork leg 5 .
– Insert adjuster inside transmission rod 31 .
– Insert preload tube 21 , spring 25 and spring guide cup 20 .
– Fully tighten plug 48 .
31
48
20
25
21