RUTHMANN 27409, Operating And Maintenance Instructions Manual

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9 Maintenance
BA.GB.12-27409-05-07-FTA-jr
RUTHMANN-Steiger
®
TB270
9-43
(W
A1
; W
A2
or W
A3
) for the rope stressing device must continue to
run perpendicular to the two ropes. The nuts have to rest com-
pletely on their bearing surfaces and must at no events be tilted.

When re-stretching the extension ropes also the corresponding re-
traction chains will be stretched. You have to take care that the re-
traction chains will not be overloaded. The position of the rocker
(W
E1
; W
E2
or W
E3
) for the corresponding chain stressing device
must continue to run perpendicular to the two chain strands. The
nuts of the adjustment screws (E
1.1, 1.2
; E
2.1, 2.2
or E
3.1, 3.2
) have to
rest completely on their bearing surfaces and must at no events
be tilted.
Due to necessary knowledge of such work we recommend to let have
the re-spanning of the chains and ropes carried out by the Ruth-
mann-after-sales-service.

Check prestressing of the retraction chains and extension ropes after
a running-in period. Extend and retract telescope several times and
check functionality. A small distance between the boom heads must
remain in retracted position.

We recommend to exchange the extension ropes after 10 years at the
latest. Only original Ruthmann-replacement extension chains may be
used.