New Tip Seal Fitting - Edwards nXDS Replacement

Figure 7 Exhaust valve assembly
1. Valve pad
3. O-ring

3.4 New tip seal fitting

Install the new tip seal using the following technique in both the orbiting scroll and the
fixed scroll:
1. Starting at the centre of the scroll form, insert the tip seal into the tip seal channel.
Make sure that each tip seal starts as close as possible at the start of the scroll
channel. Refer to
Note:
The nXDS20i has multiple tip seal starts in both the orbiting and fixed scrolls.
2. Continue to push the tip seal into the tip seal channel while working your way
around the channel profile until you have reached the end. Make sure the tip seal
is pressed squarely and fully home at each pinch point, these are located closer to
the centre of the scroll.
3. Cut short the tip seal at the end of the scroll channel. There should be at least
20 mm between the end of the channel and the tip seal, this is to allow for
expansion.
Note:
A mark is provided at the end of all the tip seal channels to indicate where to cut
the tip seal. Refer to
A73502840_D - Replace the tip seals
Figure: Tip seal fitting.
Figure: Tip seal finish
Page 11
2. Stainless steel spring
4. Exhaust valve cover
mark.