06.1.1.2. 吊具長度調整功能如下：

•  通過 Y916 閥門（前）和 Y917 閥門（后），滑動梁上的鎖定銷被收起。

•  當鎖定銷上的 S969（左） 和 S970 （右）上限位開關啟動后， 吊具長度立即開始伸長。

•  當滑動梁的位置接近所選擇的長度時，長度限定開關S971 、S972 （左）、S973、S974 （右）發(fā)出指示，將鎖定銷放下到滑動梁表面上；“滑動位置”。

•  當滑動梁的下一個孔遇到鎖定銷時，銷栓靠彈簧力壓入孔中。

•  當另一端的滑動梁到達正確位置時，鎖定銷壓入孔中，鎖定銷下限位開關結束長度調整動作。同時，在司機室中所選定的長度信號燈亮，此時吊具長度調整完畢。

06.1.1.3. 在吊具長度調整過程中可能出現的故障

1. 如果鎖定銷不向上收起，則應檢查：

a  Y916 和（或）Y917閥；
b  Y801 減壓安全閥。

2、如果不能進行伸長／縮短操作，則應檢查：

a  鎖定銷未觸發(fā)上限位開關 S969 （左）和／或S970 （右）；
b  Y914閥 （伸長／縮短）；
c  Y801 減壓安全閥；

當鎖定銷處于其上限位置時，上限位開關 S969 和 S970 應觸發(fā)。只有這樣才能進行伸長／縮短操作。

當鎖定螺栓在其下限位置（處于螺栓孔中）時，下限位開關 S967 和 S968 無法被觸發(fā)，因為伸長操作將會連續(xù)進行。
06.1.1.2. During the length adjustm., the followlng funct. are carried out
S By means of valves Y916 (front) and Y917(rear), the locking bolts of the sliding beams
are moved up.
S The lengthening starts as soon as the upper limit switches of the locking bolts, S969
(Left) and S970 (Right) are activated.
S As soon as the sliding beam position approximates the choosen length, the length
definition switches S971 and S972 (Left) and S973 and S974 (Right) generate an
instruction to move down the locking bolts by spring force onto the surfaceof thesliding
beam; ”sliding position”.
S Asthenextholeof thesliding beammeets thelocking bolt, the boltis loweredin thehole
by spring force.
S As the sliding beam of the other end arrives at the correct position, and the locking bolt
is lowered to the hole, the length adjustment is stopped by the lower limit switches of
the locking bolts. Simultaneously, the signal lamp of the chosen length lights up in the
cabin, the length adjustment now being performed.
06.1.1.3. Possible faults on length adjustment
1. The locking bolts don’t move up. Check:
a Valve Y916 and / or Y917
b Pressure relief valve Y801
2. Lengthening / shortening doesn’t operate. Check:
a The upper limit switches S969 (Left) and / or S970 (Right) are not
activated by the locking bolts
b Valve Y914 (lengthening / shortening)
c Pressure relief valve Y801
The upper limit switches S969 and S970 shall be activated, as the locking bolts are in their
upper position. Only then the lengthening / shortening is possible.
The lowerlimit switchesS967 and S968 shallbe non--activated as the locking boltsare in their
lower position (in the hole). In the sliding position these lower limit switches are activated,
because the lengthening shall continue.