06.1.1.2. 吊具长度调整功能如下：
• 通过 Y916 阀门（前）和 Y917 阀门（后），滑动梁上的锁定销被收起。
• 当锁定销上的 S969（左） 和 S970 （右）上限位开关启动后， 吊具长度立即开始伸长。
• 当滑动梁的位置接近所选择的长度时，长度限定开关S971 、S972 （左）、S973、S974 （右）发出指示，将锁定销放下到滑动梁表面上；“滑动位置”。
• 当滑动梁的下一个孔遇到锁定销时，销栓靠弹簧力压入孔中。
• 当另一端的滑动梁到达正确位置时，锁定销压入孔中，锁定销下限位开关结束长度调整动作。同时，在司机室中所选定的长度信号灯亮，此时吊具长度调整完毕。
06.1.1.3. 在吊具长度调整过程中可能出现的故障
1. 如果锁定销不向上收起，则应检查：
a Y916 和（或）Y917阀；
b Y801 减压安全阀。
2、如果不能进行伸长／缩短操作，则应检查：
a 锁定销未触发上限位开关 S969 （左）和／或S970 （右）；
b Y914阀 （伸长／缩短）；
c Y801 减压安全阀；
当锁定销处于其上限位置时，上限位开关 S969 和 S970 应触发。只有这样才能进行伸长／缩短操作。
当锁定螺栓在其下限位置（处于螺栓孔中）时，下限位开关 S967 和 S968 无法被触发，因为伸长操作将会连续进行。
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.