Troubleshooting
If the nozzle leaks, check the tightness of the valve seat
(21); it should be torqued to 190–210 in–lb (23–24 N.m).
See Fig 3. If the problem is not corrected, service the gun.
See page 6.
If fluid does not stop when the gun trigger is re-
leased, adjust the needle. See page 6. If the problem is
not corrected, check and/or replace the packings and
needle. See page 6.
Service
Fig 4
0960
18
ADJUSTING NUT (19)
20
21
SAFETY
LATCH
5/16”
(8.1 mm)
19
ADJUSTING NUT
(19)
20
21
SAFETY
LATCH
5/16”
(8.1 mm)
Models 206–718 & 207–300
Model 207–127
5/16” (8.1 mm)
ACTUAL DISTANCE
PRESS NEEDLE (20) AGAINST
SEAT TO CHECK TRAVEL
WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 6.
Adjusting the Needle
WARNING
Proper needle adjustment is essential to be sure
the safety latch makes the gun inoperative when
engaged. Improper adjustment may allow the gun
to be triggered, even with the safety latch engaged,
resulting in serious injury, including fluid injection
and splashing in the eyes or on the skin.
1.
Relieve pressure. Disconnect the fluid hose. Re-
move the spring retainer (22).
2.
Press the needle into the seat (21) with a finger.
With the safety latch disengaged, check the travel
of the gun trigger. It should be 5/16 in. (8.1 mm).
See Fig 4.
3.
Turn the first adjusting nut (19**) in or out as need-
ed to obtain the proper travel. Then lock it in place
with the locknut (18 or 19).
4.
Install the gasket (6) and retainer (22).
5.
Connect the fluid hose. Prime the system. Point
the gun into a grounded container and trigger and
release it. The fluid should stop flowing immediate-
ly. Now engage the safety latch and try to trigger
the gun. There should be no fluid flow. IF THE
GUN FAILS EITHER TEST, relieve pressure, dis-
connect the hose and readjust the needle.