Repacking The Fluid Section - Titan IMPACT 1640 Operating Manual

MAINTENANCE
9.3

REPACKING THE FLUID SECTION

1. Remove inlet valve housing in accordance with the steps
in Chapter 9.2.
2. It is not necessary to remove the outlet valve.
3. Pull the lever on the underside of the sprayer toward the
front of the sprayer. This will un-clamp the entire fluid
section.
4. Slide the fluid section forward to remove it from the gear
housing.
5. Place the fluid section cylinder upright in a vise by clamping
on the wrench flats (Fig. 17, Item 1).
Do not over-tighten the vise. Damage to the
cylinder may occur.
Attention
6. Turn the upper housing (2) counterclockwise to loosen it
from the cylinder (3).
7. Slowly pull down the upper housing (2) just far enough to
expose the extension slider (4) and the connecting pin (5)
that connects the piston rod (6) to the extension slider (4).
8. Push the connecting pin out of the extension slider and
piston rod and remove the piston rod and upper housing.
9. Place the upper housing upright in a vise by clamping on
the wrench flats (7).
Do not over-tighten the vise. Damage to the
upper housing may occur.
Attention
10. Using a wrench, remove the upper seal retainer (Fig. 17,
Item 8).
11. Slide the piston rod (6) out through the bottom of the
upper housing (2).
12. Inspect the piston rod (6) for wear and replace if necessary.
13. Remove the upper support ring (9) and upper packing
assembly (10) from the top of the upper housing (2).
14. Remove the adapter (11) and lower packing assembly (12)
from the bottom of the upper housing.
Be careful not to scratch, score, or otherwise
damage the upper housing during removal of
the packings.
Attention
24
8
9
10
7
2
12
11
6
15. Clean the upper housing (2) and cylinder (3-5). Inspect
the upper housing and cylinder for damage and replace
if necessary.
16. Place the upper housing upright (2) in a vise by clamping
on the wrench flats (7).
17. Locate the new upper and lower packings and remove the
pre-form tools. Save the upper packing pre-form tool for
use as the piston insertion tool later in this procedure.
Do not remove the pre-form tools from the upper
i
and lower packings until immediately before
they are installed into the upper housing.
18. Lubricate upper packing (10) and lower packing (12) with
machine grease.
19. Insert upper packing (Fig. 18) with O-ring (1) and
protruding lip (2) downward.
IMPACT 1640
14
13
1
3
4
5