RUTHMANN 27409, Operating And Maintenance Instructions Manual

Page: 228 / 261

9 Maintenance
9-42
RUTHMANN-Steiger
®
TB270
BA.GB.12-27409-05-07-FTA-jr

Re-adjust prestressing of retraction chains and extension ropes in case
of a too big chain dip and/or rope slack.
Attention!
A too strong prestressing can lead to the demolition
of the machine. You have to take care that the tele-
scope will not be twisted as a result of the re-
stretching.

Extend the telescope as far as possible with horizontal boom and un-
loaded cage.

Retract the telescope slightly.

Check rope slack of the extension ropes.

Re-stretch extension ropes if necessary.

Re-stretch extension ropes by means of adjustment screw (A
1.1, 1.2
;
A
2.1, 2.2
or A
3.1, 3.2
). A sufficient rope slack must always remain. Pay
attention to regular distances between the boom heads during re-
stretching procedure.

The two extension ropes have to be prestressed approximately
equally so that under operating conditions they will take approxi-
mately the same load. The position of the corresponding rocker