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10. Remove the seal washer from the
gun head.
11. Soak the removed parts in the
appropriate solvent and wipe
clean.
12. Inspect the parts for wear or
damage and use new parts during
reassembly of the gun, when
necessary.
i
Lubricate all packings
and moving parts with
a lithium-based grease
before reassembly.
13. Install the new seal assembly into
the front of the gun head. Make
sure the threaded portion of the
seal assembly is aligned with the
rectangular hole in the back of the
gun head.
14. Thread the lock nut onto the
threaded shaft of the seal
assembly in the back of the gun
head. Tighten the nut until
approximately 1/16" of the seal
assembly shaft sticks out past the
nut.
15. Apply a lithium-based grease to
both sides of the new seal washer
and insert the washer into the groove inside the gun head.
16. Install the gun head fitting into the gun head and tighten until the hex on the fitting meets
the gun head. Make sure the seal washer remains in the groove inside the gun head during
installation. Torque to 45–50 ft./lbs.
17. Reassemble the trigger.
18. Inspect the o-ring on the gun head fitting and replace if necessary.
19. Apply removeable Loctite to the threads on the shaft. Hold the seal assembly in place
with a wrench and thread the shaft into the seal assembly until it stops on the chamfered
shoulder. Do not apply excessive force on the shaft.
20. Lubricate the o-ring on the gun head fitting and reassemble the extension pole to the
gun head fitting. Trigger the gun before final tightening of the extension pole to prevent
damage to the ball holder.
21. Test the operation of the trigger. There should be a small amount of play in the trigger
after the trigger is released. This will ensure that the ball holder is fully seated in the
diffuser and the gun is shut off when the trigger is released. Adjust the position of the lock
nut on the seal assembly if trigger adjustment is necessary.
22. Reassemble the trigger guard.
23. Start the sprayer and pressurize the gun (refer to the instructions in the sprayer's Owner's
Manual). Check the gun for leaks.
24. Move the trigger lock to the locked position. Pull the trigger and check for leaks.
Pole Gun
Extension Pole
O-Ring
Gun Head Fittiing
Rear Fitting
Seal
Assembly
Seal
Washer
GB
Shaft
Lock Nut
Trigger
Screw
Trigger
Trigger
Guard
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