Valid for separately installed angular gear unit with rigid steering column: Mount steering
wheel with nut (83). Screw in slip contact and tighten to 5 Nm. Tightening torques for steering
wheel nuts with cylindrical splines and taper 1:16:
M 18 x 1.5 = 35-45 Nm
M 22 x 1.5 = 40-50 Nm
M 26 x 1.5 = 60-70 Nm
During assembly and disassembly of steering wheel do not apply axial
blows against steering spindle.
Valid for steering systems with divided steering column: Install universal joint or flexible
coupling between steering column and steering gear. In straight-ahead driving position the
angular fork member must be at right angle to markings on steering spindle and jacket tube or
valve housing. When using two joints, the bending angles should be the same and the joint
forks should be located on one plane. If such an installation is not possible, synchronization
can be obtained by displacing the forks on splining in relation to each other. Hammer blows
against aluminum universal joints should be avoided, since this may result in destruction or
sluggish operation. Connect by insertion of fitted bolts, as well as by tightening nuts to each
other. Tightening torques of fitted bolts:
M 10 x 1.25 = 48 Nm
Move the steered wheels of the vehicle into straight-ahead driving position. This position is
attainted the moment the steered wheels are in alignment with or parallel with the second pair
of wheels (place measuring bar against front and rear wheel).
With the spaces packed with Texando FO20 grease or an equivalent consistency-class 2
calcium complex grease, press the dust seal (65) onto the shaft (60). Then position the pitman
arm on the splines, taking care to align the marks on the pitman arm and the shaft. Tighten
the castle nut (67) provisionally and apply full lefthand lock. Remove the pitman arm and turn
the steering wheel further to ascertain whether the steering has a reserve of movement.
Repeat this measurement at right-hand lock. Tighten the castle nut (67) to the torque stated
below and insert a split pin. Engage the radius link and tighten.
M 35 x 1.5 = 400 Nm
Connect pressure and return line between pump, steering and power cylinder for each
steering circuit. Install steering circuit II on steering valve, located behind steering nut; steering
circuit I on steering valve, located in front of steering nut. Install separate valves combined in a
valve unit or as individual valves (flow rate indicator, remote control valve with pressure limit,
pressure limit valve for hose lock, replenishing valve and check valve) according to line
diagram. If lines must be rebent, the lines should be cold, so that no scaling occurs.
Use only the manufacturer's approved and pressure-tested spare parts to replace hoses with
visible external damage such as cracks. Note the manufacturer's spare-parts numbers.
Fill system with oil from oil tank and vent (refer to Section 4.).
Adjust hydraulic steering lock (refer to Section 3.).