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311052H 21
10. If gasket (15) needs to be replaced, unscrew the two
screws (18) and separate the fluid housing (2) and
piston housing (1). Inspect gasket (16) and replace
if needed.
11. Remove the large o-ring (22) from the piston and
the smaller o-ring (23) from the piston shaft.
Remove the two o-rings (25, 26) from each of the
piston stems. Check that the stems are solidly in
place. If they are loose, replace the entire piston
assembly (20).
12. Perform the following applicable step:
a. Non-circulating guns: Remove the fluid outlet
port plug (5) and gasket (4) from the fluid hous-
ing (2). Remove the o-ring (6) and backup o-ring
(7) from the plug.
b. Circulating guns: Remove the gasket (4) from
the fluid housing (2).
13. Clean all parts and replace any worn parts. When
assembling, lubricate the threads with anti-seize
lubricant.
Gasket (16) is attached to assembly with adhesive;
therefore, if you are replacing gasket (16), ensure
that a replacement gasket is available.
F
IG. 16
18
18
1
2
TI8173b