14
Aerial work platform
ZED 20.3 HV
COD. UM0284_GB | REV. 0.0 | ED: 09/17
GB
Chapter 8
MAINTENANCE
8.8.2
Tightening the frame screws
Fig.
8.6
The frequency at which the chains need to be tightened depends on factors such as the frequency
of use and the work environment. It is nevertheless possible to establish that under normal work
conditions, the screws of the turret should be checked and tightened after the irst 250 hours of
operation or the irst 3 months and generally least every 12 months or 1000 hours.
CAUTiOn
Do not exceed the values indicated by the dynamometric wrench.
8.9
Telescopic element clearance and sliding block wear veriication
POSiTiOn Of PlATfOrM:
1)
transport position
2)
vehicle switched off
SliDinG BlOCK WEAr CHECK:
The special adjustable blocks (Fig. 8.9, 1) help reduce sliding friction when the boom is extended:
•
check the wear and tear of the pads for the telescopic elements;
•
replace the blocks if there is a clearance of more than 5 mm between the tubulars of the
telescopic elements when the boom and the telescopic elements are completely retracted.
TElESCOPiC ElEMEnT ClEArAnCE CHECK:
Check the clearances and adjust as necessary:
•
this operation must be performed with the platform in the rest position.
•
tighten the adjusting nuts (Fig. 8.9, 2) until coming into contact with the removable inner boom;
•
Unscrew the nut by half a turn to allow a slight clearance between the elements.
CAUTiOn
While inserting the boom, do not exert excessive pressure on the sliding blocks;
this may damage the structure of the booms.
