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UDI 5-3-2020
Maintenance Manual - 6Matic
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5.
Carefully pull out the complete screen assembly (Item 7, 8, 9 &13) using the two handles inside
the coarse screen.
6.
Place the screen assembly on a clean working surface in order not to damage the screen.
7.
Remove large particles from the coarse screen (7) and clean if necessary.
8.
Check the fine screen (8) for any markings of the suction nozzle (9/2) and check the nozzles on
the collector unit (9) for wear.
9.
Clean the complete screen by means of a high-pressure cleaner.
10.
Remove the screen seals (8/4)
11.
Remove the bolts (35) from the shaft guide (19)
12.
Remove the bolts (8/12) to dismount the guide base (8/7)
13.
Remove the bolts from the coarse screen to disconnect the coarse screen (7) from the fine
screen (8).
14.
Dismount the reverse housing assembly (13) by means of the following steps:
●
Remove nut (13/6) and remove bolt (13/5) from the housing
●
Remove bolts (13/3) and remove the housing of the reversing mechanism (13/1)
●
Remove the bolts from the housing (14/5) and remove the housing (14/5) from collector unit
(9/1)
●
Remove the O-ring/Stopper (14/2) and remove the cover of the drive pawl (14/3)
●
Dismount the drive pawl (14/4) from the housing (14/5) and remove the drive screw (14/1)
15.
Check the drive pawl (14/4) and the drive screw (14/1) for any signs of wear and tear
16.
Pull out the dirt collector in the direction of the guide base from the screen
17.
Remove the guide base (8/7) by sliding it over the collector shaft.
18.
Visually inspect the surfaces on both the inside and on the outside of the fine screen (8/1).
19.
Replace all nozzles (9/2.1) on the dirt collector unit.
20.
Replace the collector lower guide (8/5) with a new O-ring for the guide stopper (8/6) and a new
the wiper seal (8/10).
21.
Replace the collector upper guide (8/2) with a new guide seal (8/9).
22.
Reinstall the collector unit back into the screen through the upper guide base.
23.
Place the collector upper guide (8/2) in the upper guide base.
24.
Place the guide base (8/7) over the collector shaft.
25.
Mount the guide base (8/7) back into the screen and tighten the screws (8/12).
26.
Reinstall the bolts (35) to the shaft guide (19)
27.
Thoroughly clean the drive pawl (14/4) and the drive screw (14/1) and place them back into the
housing as followed:
●
Replace O-ring (14/6) on shaft of the reversing mechanism (14/1).
●
Apply Ocean 7W or equivalent to the shaft of the reversing mechanism (14/1).
●
Place the shaft of the reversing mechanism (14/1) in the drive pawl housing (14/5).
●
Place the drive pawl (14/4) into the housing (14/5)
●
Slide the cover (14/3) over the housing and place the O-ring / Stopper (14/2)
●
Rotate the reversing mechanism manually and check that it is running smoothly and the
changing of the direction is smooth. If the reversing mechanism is showing signs of wear of
it is not running or changing direction smoothly, replace the complete mechanism.
28.
Place the reversing mechanism on the dirt collector (9) and mount the housing (14/5) using the
bolts.
29.
Replace the O-ring (13/2) and apply lubricant to the O-ring
30.
Place the housing of the reversing unit (13/1) over the shaft of the reversing mechanism
31.
Connect the shaft to the housing using bolt (13/5) and nut (13/6). Mount the nut and then turn it
slightly loose.
32.
Mount the housing (13/1) to the upper guide base (8/3) using bolts (13/3). Handle the bolts,
before mounting them, with grease.
33.
Rotate the whole collector unit manually and check that it is running smoothly and the
changing of the direction is smooth.
34.
Place the new screen seals (8/4) onto the filter element assembly. Pay attention to the direction
of the seal.
