15
11.2.2 Brake assembly and adjusting (figures 4 and 5)
Proceed in the opposite way when assembling. Slip over the hub (1) the friction insert
(2B); ratchet (3) and second friction insert (2A). Set it in the crank arm (7), slide on the
spring (4) and screw on the nut (5). Tighten the nut so that the clearance in the dent is
from 4 to 6 mm (see fig. 5) and screw down the screws (6).
11.3 BEARINGS
Cast iron plain bearings are used in the product. The theoretical service life of bearings
is several times higher than the theoretical service life of the product. Therefore, they do
not need any special maintenance except for cleaning and lubrication during the regular
inspection interval, see 8.1. In the event that the bearing is damaged during
disassembly, assembly or due to dirt (sand, rock, dust ...) entering the working space of
the bearing, the bearing must be replaced immediately.
11.4 GENERAL INSTRUCTIONS
Following instructions give general important information on disassembly, check up,
repair and assembly. If the jack was dismounted from any reason act upon the
instructions as follows.
1. Perform maintenance in clean environment.
2.
NEVER
disassemble the jack more than it is necessary to carrying out the needful
repair.
3.
NEVER
use excessive power when dismantling parts.
4.
NEVER
use heat (fire) as the mean when dismantling parts, if the parts are destined
for next use.
5. Keep the workplace clean and without foreign materials that could get into bearings
and other movable parts.
6. If you squeeze the part in vice, use always the appropriate pads for protection of
parts surfaces.
11.5 CHECK UP
Check up, whether all disassembled parts are suitable for next use.
1. Check up, whether no parts are worn out and have no chutes or fissures.
2. Check up, whether threaded parts have no damaged thread.
11.6 REPAIR
Outworn or damaged parts must be replaced.
Remove little burrs and scratches or other minor surface defects and flatten out with fine
grinder or abrasive cloth.
11.7 TEST
The load test must be performed at all repaired jacks by qualified person with the load
exceeding the load capacity by 10% for verification of function and brake of the jack.
12 PUTTING OUT OF OPERATION – DISPOSAL
The jack do not contain any noxious agents, its parts are from steel and cast iron. Hand
over the jack after putting it out of operation to the firm dealing with disposal of waste
metal.
