HP AUTOMATIC XT SPAY GUNS 311051D - Manual (Page 24)

Service
24 311051D
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.
b. Circulating guns: Remove the gasket (22) from
the fluid housing (2).
15. Clean all parts and replace any worn parts. When
assembling, lubricate the threads with anti-seize
lubricant.
F IG . 21
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 4-5 in-lb (0.45-0.57 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.
1
4
3
2
8
7
6
9
Cutaway View:
Part No. 249388 Gun Shown
4
6
7
29
30
1
8*
T
11*
10*
3
12*
9
17
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
TI8103a
2
2