Packings - WAGNER PROSPRAY 3.29 Owner's Manual

repairs at the unit
11.3

PACKINGS

1. Remove inlet valve housing in accordance with the steps
in Chapter 11.2, Page 53.
2. It is not necessary to remove the outlet valve.
3. Loosen lock nut (Fig. 14, Item 5) counterclockwise with
light blows from a hammer.
4. Unscrew upper housing (6) counterclockwise from the
gear unit housing.
5. Clamp upper housing (6) at the wrench surfaces vertically
in a vice.
Do not tighten vice excessively to prevent
crushing.
Attention
6. Screw out threaded joint (7).
7. Slide the piston rod (4) forward until the piston is out of
the T-slot (2) on the slider assembly (3).
8. Push piston (4) downward out of the upper housing (6).
Check piston for wear and replace if necessary.
9. Remove upper packing (8) and lower packing (9) from the
upper housing (6).
Do not damage inside of upper housing.
Attention
54
10. Remove the transportation devices from the upper and
lower packings. (The transportation device from the upper
packing is required for installation of the piston.)
11. Lubricate upper packing (8) and lower packing (9) with
machine grease.
PS 3.29 / 3.31
1
3
2
5
7
10
8
6
9
11
4