Fluid Tube Removal And Replacement; Fluid Filter Removal - Graco PRO AA4500 Instructions-Parts List Manual

SERVICE
Fluid Tube Removal
81
Replacement
To remove the fluid tube assembly (12) for cleaning or
replacement:
1. Disconnect the bottom fluid tube nut (C). See
Fig 10.
2. Carefully unscrew the top fluidtube nut (D). 10
CAUTION
Be careful not to damage the fluid tube assembly
D
(12) when cleaning or installing it, especially the
C
sealing surface (E). See Fig 11. If the sealing sur-
14
face is damaged, the entire fluid tube assembly
must be replaced.
A
3.
Apply grease, part no. 217-1 15, to the entire length
Fig lo
M W
of the plastic extension on the end of the fluid tube
(12). See ACCESSORIES to order the grease.
4. Apply a low strength thread sealer (such as purple
Loctitem) to the fluid tube nut
(D)
threads.
5.
Install the fluid tube into the gun barrel by tightening
the top fluid tube nut (D) hand-tight, then turn
it
1/4
to 1/2 turn with a wrench. There will be a gap
between the nut and barrel. Do not over-tighten
it.
6. Make sure the fluid filter (14) is in place in the fluid
thread sealer
fitting
(10).
Then tighten the bottom fiuid
tube
nut
(C) onto the fluid fitting; make sure the top fluid tube
nut
(D)
remains tightened.
Fig
11
C
W l s
Fluid Filter Removal
1. Disconnect the bottom fluid tube nut
(C).
See
Fig 10.
2. Remove the fluid filter (14) from the fluid fitting
(IO).
Clean or replace the filter, as needed.
3. Install the fluid filter back into the fluid fitting (10) and
tighten the bottom fluid tube nut (C) onto thefluidfit-
tightened.
ting; make sure the top fluid tube nut (D) remains
30
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