5 | Stop screw |
6 | Axle stop |
A | Distance |
P46.20-2290-11
1 | Steering limiter valve |
2 | Screw |
3 | Locking plate |
4 | Lower universal joint |
P46.20-2289-11
Steering gear cross section |
1 | Steering limiter valve |
2 | Screw |
3 | Locking plate |
P46.20-2291-01
Pfeile | Markings on steering gear for checking the center position |
P46.20-2287-01
1 | Measure/adjust wheel angle |
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Before checking and adjusting the hydraulic steering limitation, the mechanical end stop on the front axle must be checked or adjusted. | |||
2 | Start engine and allow to idle | The front wheels must no longer be on the turn plates, but must be on solid ground instead. | |
3 | Turn steering to the right until there is noticeable resistance. | Do not turn the steering with force up to the maximum possible end stop under any circumstances, but only until there is noticeable resistance using a normal steering movement and hold it in this position. | |
4 | Measure distance (A) between stop screw (5) and axle stop (6) on right front wheel | For the measurement, a second person must be used for assistance because the steering wheel has to be held at the hydraulic steering limitation when measuring. | |
5 | Turn steering to the left until there is noticeable resistance. | Do not turn the steering with force up to the maximum possible end stop under any circumstances, but only until there is noticeable resistance using a normal steering movement and hold it in this position. | |
6 | Measure distance (A) between stop screw (5) and axle stop (6) on left front wheel | For the measurement, a second person must be used for assistance because the steering wheel has to be held at the hydraulic steering limitation when measuring. | |
7 | Evaluating measurement results | The distance (A) between the stop screw (5) and axle stop (6) must be the same or larger on the left front wheel than on the right front wheel. | |
If there is no complaint after evaluating the measurement, the hydraulic steering limitation does not have to be adjusted; continue with operation step 13. | |||
Distance between stop bolt and axle stop when inserting the hydraulic end limiter and left wheel steer angle | |||
Distance between stop bolt and axle stop when inserting the hydraulic end limiter and right wheel steer angle | |||
8 | Adjust center position of hydraulic steering limitation | ||
The center position of the steering must be adjusted by lengthening or shortening the drag link only if the distance (A) has different values on the left and right wheel. | |||
Distance between stop bolt and axle stop when inserting the hydraulic end limiter and left wheel steer angle | |||
Distance between stop bolt and axle stop when inserting the hydraulic end limiter and right wheel steer angle | |||
9 | Check hydraulic steering limitation after adjusting center position | To do so, repeat operation steps 2 to 7. | |
10 | Perform basic adjustment on the hydraulic steering limitation |
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The steering limitation valve (1) is under pressure and may not be turned more than 2.5 turns when the engine is running under any circumstances. Therefore, before the actual adjustment procedure, a basic adjustment is necessary. | |||
11 | Check hydraulic steering limitation after the basic adjustment | To do so, repeat operation steps 2 to 7. | |
12 | Adjust hydraulic limiter | ||
Distance between stop bolt and axle stop when inserting the hydraulic end limiter and left wheel steer angle | |||
Distance between stop bolt and axle stop when inserting the hydraulic end limiter and right wheel steer angle | |||
13 | Check hydraulic steering limitation after adjustment | To do so, repeat operation steps 2 to 7. | |
14 | Place front wheels in straight-ahead position | ||
15 | Check center position of steering gear. | The markings on the steering arm, the Pitman arm shaft and the steering gear housing must match. A small deviation is permissible if the hydraulic steering limitation could be successfully adjusted in the previous operation steps. | |
16 | Check center position of steering wheel; correct if necessary | After adjusting the hydraulic steering limitation, the center position of the steering wheel may no longer be adjusted by adjusting the drag link. Instead, the lower universal joint (4) of the steering shaft must be moved. | |
17 | Check straight-ahead position of steering and turn signal cancellation during a test drive |