4.1.1 The individual jacking gear units are to be designed such that each unit
can be removed separately for inspection, maintenance and repair. Adequate
arrangements for dismantling, including lifting devices, are to be provided.
4.1.2 Unless otherwise agreed, all gearing, except the main climbing pinion,
are to operate in oil bath enclosures. Main pinions and racks are to be supplied
with a suitable lubricant during all jacking operations.
4.1.3 Adequate inspection openings are to be provided to enable the teeth of
pinions and gear wheels, and their attachment to the shafts, to be readily
examined.