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5.3 PREPARATORY WORK BEFORE INSTALLATION AND ASSEMBLING
5.3.1 Prior to Installation
CAUTION: RISK OF SKIN IRRITATION!
External gearbox components may be supplied with preservative materials applied, in
the form of a waxed tape overwrap or wax film preservative. Gloves should be worn when
removing these materials. The former can be removed manually, the latter using white
spirit as a solvent. Preservatives applied to the internal parts of the gear units do not
require removal prior to operation.
WARNING: RISK OF SYSTEM FAILURE!
Installation must be performed in accordance with the manufacturers’ instructions and be
undertaken by suitably qualified personnel.
WARNING: CRUSHING RISK!
Before working on a gearbox or associated equipment, ensure that the load has been
removed from the system to eliminate the possibility of any movement of the machinery
and isolate power supply. Where necessary, provide mechanical means to ensure the
machinery cannot move or rotate. Ensure removal of such devices after work is complete.
1. Check that the screw jack unit has not been damaged.
2. Check that the screw jack/motor nameplate matches the requirements of the machine the unit is
to be installed into.
3. Thoroughly clean the screw jack and mounting surfaces that are to be used and check that the shafts of
paint & anti-corrosion agents uses a commercially available solvent. Ensure solvent does not make contact
with the oil seals.
5.3.2 Fitting of components to the unit input shaft
The input shaft extension diameter tolerance is to ISO tolerance j6 (for shaft diameter < 40mm) and k6 (for
shaft diameter > 40mm) and the fitted components should be to ISO tolerance K7.
1. Ensure that shaft extensions, bores & keys etc are cleaned.
2. Items (such as gears, sprockets, couplings etc) should not be hammered onto these shafts since this would
damage the shaft support bearings.
3. Items being fitted may be heated to 80/100°C to aid assembly further.
WARNING: RISK OF ENTANGLEMENT!
Rotating shafts and couplings must be guarded to eli- minate the possibility of physical
contact or entangle- ment of clothing. It should be of rigid construction and firmly secured.
