Grove Published 11-10-2014, Control # 524-00 4-17
RT880E SERVICE MANUAL BOOM
9. If stop block on the fly cannot be properly adjusted with-
out excessive thread 4.5 in (32 mm) protruding out from
the jam nuts, backoff the nuts on the retract cables 1 in
(25 mm), and backoff the swivel nuts 1 in (25 mm).
10. Adjust retract cables until stop block on fly bottoms out
properly. Install jam nuts.
11. If the retract cables can still not be adjusted properly,
remove all the tension in the retract and extension
cables and return to step 4. In step 5, adjust the exten-
sion cable to 5 in (127 mm) and continue with procedure.
NOTE: If grease fittings are not fully accessible at full
boom extension, make the following adjustments.
12. Retract boom approximately one foot and tighten extend
cables one full turn each.
13. Extend boom to make sure grease fittings line up with
hole. If not lined up with hole, retract boom slightly and
add one additional turn on each of the extend cables.
14. Once grease fittings lines up with boom at full extension,
fully retract boom at Hi speed. When boom initially
begins to retract, extension cables should become slack
enough to hit the boom section. If this does not happen,
reduce tension on retract cables until they do become
slack.
15. Just as the boom begins to bottom out, observe that the
fly still bottoms out before the outer mid. If so, all adjust-
ments are correct.
CAUTION
Overtightening of the retract cable will damage the cable.
Take care when retracting the boom fully, while adjusting
the cable, to avoid full boom retraction if the fly section
contacts its stop block more than 0.125 in (3 mm) before
the outer mid section contacts its stop block on the center
mid.
To Next Page
Loading...
Need help?
General
