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Valtra 6850
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957
Model Code Page
61. Steering system
1. 1. 1995
6000--8750 613 1
8. 11. 1990
Steering cylinder (Op. no. 613)
1. Changing seals in steering cylinder
Note! This instruction concerns earlier steering cylinder,
---1672/93, ---0305/93 (Hi---Lock). Later cylinder, see page
613/3.
A. Removal of steering cylinder
N.B. It is not necessary to detach the front axle from tractor
when repairing the steering cylinder. In the figures below the
front axle is detached.
1. Raise the front end of the tractor and place axle stands
behind the front axle. Turn the front wheels to the left against
the limiter screw.
2. Heat up the RH side piston rod end at the joint between the
pistonrod and tie rod untilthe lockingfluid in the threadsmelts
(apply heat carefully about 30 mm from end, max 200˚ C).
Important!. the metal must not be allowed to become blue
during the heating operation. Do not heat up the ball joint
because this can damage the rubber cover on the joint.
3. Disconnect the tie rod from the piston rod end.
4. Turn the LH wheel to the right against the limiter screw and
disconnect the threaded joint between the LH side piston rod
and tie ro d in the same way as described above.
5. Disconnect oil hoses from the steering cylinder. Remove
the c onnecting nipple from the RH side end piece. Cover all
holes with suitable plugs.
6. Remove steering cylinder attaching bolts (on LH side).
7. Pull out the cylinder to the left from the axle housing.
Note! On E---models, there is a sensor on the front axle for
detecting steering angle.
B. Changing seals in RH side end piece
1. Remove steering cylinder (instr. A).
2. Secure the cylinder in a vice. Tap in the pin 4 mm) on the
RH side end piece. Push the pin as far as possible.

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