Disassemble Steering
Illustration shows the axle with integrated steering.
Unlock and loosen the castle nut. Tap the tie rod loose and drive it out of the tapered hole.
Unlock tie rod and separate it from piston rod.
NOTE: Heat piston rod (tie rod is Loctite secured).
Carry out steps of figure 2 and 3 on both sides (second tie rod).
Loosen hex head screws.
Tap piston guide loose and remove it. Remove released spacing washer.
Pull piston rod out and remove cylinder.
Take guide out, using soft drift to prevent damage.
(S) drift
(S) installer
Remove scraper ring and grooved ring.
Repeat step of figure 8 on the second piston guide, see illustration.
Remove both scraper rings.
Remove seal ring.
In order to facilitate the disassembly of the following steps, clamp piston rod into vise (use brass vise jaws to protect the piston rod).
Squeeze snap ring out.
Take off the disc.
Remove the split ring.
Push the piston upward, take back and pull off loosened disc and O-ring.
Take off piston and loosened split ring.
Remove remaining single components out of piston.
Assemble Steering
Install grooved ring and scraper ring as illustrated into the two annular grooves of the guide.
NOTE: Sealing lip of grooved ring is shown toward the pressure chamber.
Grease O-ring and insert it into the groove.
Install grooved ring and scraper ring for the second guide as shown in figure 17.
Grease both O-rings and lay them into the cylinder groove.
NOTE: Pay attention to the different diameters. One is larger than the other.
Illustration shows the piston, its components and the piston rod.
Reassemble piston (figures 22 - 31).
Lay washer into the piston.
Install the circlip, with the collar showing upward.
Install the snap ring.
In order to facilitate the reassembly of the following steps, clamp piston rod into the vise (use brass vise jaws to protect the piston rod).
Make split ring adhere with grease in the annular groove of the piston rod (groove below on figure).
Guide pre-assembled piston (components toward below) over piston rod and place it firmly against split ring.
Grease O-ring and press it firmly against shoulder.
Install the washer.
Position the split ring into the groove.
Insert circlip, with the collar showing upward, and fix by means of a snap ring.
Insert first scraper ring into the annular piston groove (outer diameter), grease seal ring and install it next.
Position second scraper ring, see illustration.
Install guide into the bore, using a soft drift, and place it against shoulder.
(S) soft drift
(S) installer
Install cylinder firmly against shoulder.
| NOTICE |
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Pay attention to the installation position (smaller diameter ahead). |
Introduce complete piston rod into the cylinder.
Use installer.
(S) installer
Determine spacing washer:
Measure dimension A from flange facing to the contact surface/cylinder.
For Example: 32.15 mm
NOTE: Pay attention to a perfect contact of the cylinder in the housing.
Determine dimension B from face/cylinder to the flange facing.
For Example: 30.85 mm
Example:
Cover determined spacing washer, for example s = 1.30 mm, with grease and make it adhere in the guide.
Slide complete guide over the piston rod, respectively cylinder and place it firmly against shoulder.
Fasten guide by means of hex head screws.
Torque limit (M14/10.9) 190 N·m
Fasten both tie rods at the piston rod.
NOTE: Cover tie rod (about 3 threads) with Loctite No. 242. The right and left tie rod are of different configuration. Pay attention to the installation location, see figure 41.
Secure both tie rods.
Engage tie rods and fasten by means of castle nut.
Secure castle nut.
See figure 2 (4.2), Page 107.
Adjust steering lock and track.
Center the piston rod.
Position measuring device at the axle.
(S) measuring device
Adjust tie rod axially until 90° can be read on the measuring device.
NOTE: 90° corresponds to a track adjustment of "zero" mm.
Repeat step on the opposite side.
Adjust the steering lock (for example, 35°) on the wheel, running the inner track, by installing corresponding spacer sleeves (see figure 47).
Carry out this step in both steering directions.
(S) measuring device