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24 313516G
13.Remove all o-rings from the piston (3) and
stems (T). Check that the stems are solidly
in place. If they are loose, replace the entire
piston assembly (3).
14.Perform the following applicable step:
a. Non-circulating guns: Remove the fluid
outlet port plug (19), and gasket (22)
from the fluid housing (2). Remove the
o-ring (21) and backup (20) from the
plug. See FIG. 21.
b. Circulating guns: Remove the gasket
(22) from the fluid housing (2). See FIG.
21.
15.Clean all parts and replace any worn parts.
When assembling, lubricate the threads
with anti-seize lubricant.
FIG. 19
SERVICE NOTES:
Torque to 35-45 in-lb (4.0-5.1 N•m).
Lubricate threads with anti-seize lubricant.
Lubricate with light-weight oil.
Tighten cap (4) until it bottoms out.
Apply semi-permanent anaerobic sealant.
Torque to 6.5-7.5 in-lb (0.73-0.85 N•m).
Torque to 95-105 in-lb (10.7-11.8 N•m).
Apply semi-permanent anaerobic sealant to two
threads at end of needle shaft.
Step in spacer (46) must face into packing nut.
1
4
3
2
8
7
6
9
Cutaway View:
Part No. 24A749 Gun Shown
4
6
7
29
30
1
8*
T
11*
10*
3
12*
9
16
5
5a
24
23
25 2
1
2
2
3
3
3
3
3
3
4
6 7
8
9
36
ti8199a
Alternate Fluid Control Shown
ti13592b
2
2
45 (x 2)
46
3
10
10