6.3.2 Total dismantling
Safeguard drive element against unintentional operation (disconnect power
supply, also refer to section “1.4 Safety” in operating instruction B 0.100.1 for
this).
Danger of burns when draining hot lubricant!
Assure environmentally safe draining and disposal of spent lubricant.
1. Drain lubricant (refer to
section 6.1.4, "Change of
lubricant").
2. Remove pump head
(according to operating
instruction "pump head").
3. Remove motor.
Take drive flange off.
4. Force protecting cover (72)
from hand wheel (21) using a
small screw driver. Remove
hexagon head screw (22) and
disk (75).
Pull hand wheel ( 21) from
adjusting unit (7) (see figure
3) using the claw pulling
device.
5. Loosen the screws (33)
(make sure not to lose the
seal rings (34)), and pull scale
housing (24) off via the adjusting unit (7).
6.
Remove O-ring (48) and hexagon head screws (29). Using plunger (502) hold the connecting rod
(10) tight and pull the adjusting unit (7) from the drive element housing (1).
7. For further dismantling turn the adjusting unit (7) from the threaded bushing (65) clockwise.
8.
Remove connecting rod (10), plunger (502) and cylindrical pin (32) from drive element housing (1).
9. Remove the circlip (13) and take out spacer pipe (23).
Lift worm shaft (19) by approximately 20 mm (O-ring (17) is moved upwards from its operating
position ) and drop again. Remove O-ring (17). Pull out worm shaft (19) while turning it.
10. If the grooved ball bearing (16) must be replaced separate coupling hub (75) and worm shaft (19)
using the claw pulling device.
Remove key (20) and then circlip (15). Now you can pull the grooved ball bearing (16) from the
worm shaft (19).
11. If the grooved ball bearing (16) does not have to be replaced do not dismantle the assembly.
12. If shims (14) were used also remove them from the drive element housing (1) and note their
number for re-assembly with the same grooved ball bearing (16).
When installing a new grooved ball bearing (16) make sure to follow the
instructions in section 6.3.3.2.
13. Take worm wheel (3) from drive element housing (1).
Unscrew air filter (39) and screwed plug (40).
Fig. 3
8
B 1.660 en Drive element LEWA - ecosmart® type LCA manual stroke adjust., motor vertically
