PREVOST X3-45 Multiplex, Руководство по обслуживанию

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Fig. 21
Removal and Re-Installation of the Steering Gear
26 Instructions on Design, Operation, Maintenance and Inspection
VI. Removal and re-installation of the steering gear
1 Removing the steering gear
1.1 Thoroughly clean the steering gear and its immediate surroundings, in particular the pipe
connections.
Drain the oil as described in Chapter III..
Take a note of the pressure and return lines‘ position.
Unscrew the pressure and return lines.
Obturate all oil pipes (danger of soiling).
1.2 Check whether the marks on the sector shaft and the drop arm coincide.
Note:
If the marks are offset from each other, prior to fitting the drop arm inquire with the vehicle
manufacturer whether differing assembly instructions exist.
Screw out the locking screw (50).
Pull the drop arm off, using tool [5].
Attention:
Heating up the drop arm or driving in a wedge between the housing and the drop arm or
removing the drop arm by means of hammer blows is not permitted as such action may
cause changes to the material and/or inner damages to the steering gear.
1.3 Additionally, for vehicles with adjustable steering column:
Adjust the driver’s workplace to the topmost position to relieve the ball-track relay shaft as
much as possible.
By means of a suitable tool, for instance a ratchet belt, relieve the ball-track relay shaft in
such a way that no thrust force can act towards the steering gear.
When a ratchet belt is used, pass the belt through the yoke spaces if possible (see arrows
in
Fig. 21
). Tension the belt to an extent avoiding any damage to the sealing elements or
the steering gear protection cap caused by a dislocation of the universal joints at the moment
the clamping screws are unscrewed.
1.4 Unscrew the universal joint or the elastic coupling between
the steering gear and the steering column or the separately
mounted bevel box.
Unscrew the mounting screws and remove the steering
gear.
Note:
If a fitting bolt was used, write its position down.