GUN DISMANTLING AND REASSEMBLY
6
IMPORTANT NOTE: Whenever working on Airless Equipment, be sure to follow the Pressure Relief
Procedure found in your manual. If the gun is attached to a sprayer, engage the gun trigger lock
(which may be called the gun safety latch). The gun trigger lock should always be set when the gun is
not being triggered.
REPLACING THE VALVE SPRING UNIT
Dismantling:
1.
Unscrew the REV-GUARD™ and remove the spray tip & seal.
2.
Pulling the trigger, unscrew the Valve Seat using a 5/8” socket wrench.
3.
Unscrew the retainer nut, remove the retainer and retainer pins then push the shaft of the valve spring
unit out of the gun head.
4.
Clean the Gun Head bore with solvent and a small brush. Do not use any sharp objects to scrape away
dried paint; doing so may cause damage to the gun head, causing a leak around the seal.
Reassembling:
1.
Apply grease to the O-Ring then push valve spring unit firmly into gun head by hand.
2.
Reinstall the retainer pins, retainer, and the retainer nut on valve spring unit, tighten the nut until one
thread is showing out of the back of the nut.
3.
Pull the trigger and install the valve seat by hand until you feel a positive stop.
4.
With the trigger locked, and using a feeler gauge (feeler gauge must be placed between the retainer
and gun body), tighten the retainer nut so that you have .020” spacing between retainer and gun body.
5.
Unlock and depress the trigger, then torque the valve seat to 30 ft. pounds.