23
L-60 SPRAY GUN OVERHAUL
Use diagram on opposite side for reference.
1) Initiate shut down procedure:
Shut Down Procedure
Always follow Shut Down Procedure before
starting any troubleshooting, servicing or
cleaning.
1) Engage the trigger safety lock in the locked position. Test the
trigger safety lock to ensure the lock is working properly.
2) Turn pressure regulator to minimum.
3) Disconnect electric plug from wall socket, or disconnect air
supply.
4) Open the dump valve to relieve pressure. Leave open until
ready to spray or test or clean.
5) Remove the spray tip.
6) Disengage the trigger safety lock.
7) Trigger the gun into a metal pail to relieve any remaining
pressure. A metal part of the spray gun should be held firmly against
the grounded metal pail when relieving the pressure from the gun.
(A grounded metal pail is not required for non-flammables such as
latex.)
8) Reset the trigger safety lock to locked position.
2) Using the two crescent wrenches, disconnect the gun and gun
handle from spray hose.
3) Remove spray tip or attachment assembly from gun.
4) Hold gun trigger open and remove seat (pos. 1) from gun. Release
trigger. Never remove or attach seat unless trigger is held in the
open position. Permanent and expensive damage to both ball
and seat will result!
5) Remove adjusting nut (pos. 7) from rear of gun using 7/16 socket.
6) Grasp retainer block (pos. 6) and pull away from rear of gun.
Remove the two trigger pins (pos. 8) from gun.
7) Gently tap on shaft that is protruding from rear of gun body. This is
the end of the ball/packing assembly, and it will now pop out of the
front of the gun. (pos. 3&4).
8) Remove gun handle and filter.
9) Clean all parts thoroughly (including inside of gun) and lay parts out
on a clean rag for inspection.
10) If the ball (pos. 3) has a groove worn in it, the ball will have to be
replaced. Usually the seat (pos. 1) will have to be replaced as well,
as it wears against the ball. If the gun was leaking from the back, the
packing assembly (pos. 4) will require replacement. All of these
parts are included in the repair kit #L032-678.
11) Lightly grease the packing (white area of pos. 4). Push ball/packing
assembly into gun body, pressing firmly until it bottoms.
CAUTION: Push straight, as a sideways slip could bend the shaft.
Rotate the ball/packing assembly so that the flat portions on the end
shaft protruding from the back of the gun set horizontally.
12) Examine the trigger pins for wear and equal length. Lightly grease
and install.
13) Install retainer block on rear of gun and install locking nut. Tighten
locking nut until approximately one thread shows out rear of the nut.
14) Thread gun handle into gun body.
15) Lightly grease threads of seat. Install trigger guard over open end of
seat. Hold gun trigger in open position and install seat. Tighten to
30-40 ft. lbs. and release trigger.
16) The retainer cap should have a bit of slack in it and should not be
bottomed against the gun. The gun and safety lock will not work
correctly if this step is not performed properly.
To increase slack, loosen the locknut a little and test slack again.
To decrease slack, tighten the locknut a little and test slack again.
With too much slack, the gun may not turn on, but the safety lock will
work fine. With too little or no slack, the gun may be permanently
ON and/or the safety lock does nothing.
DO NOT RUSH OR IGNORE THIS STEP, CORRECT OPERATION
OF THE SAFETY TRIGGER LOCK REQUIRES PROPER AD-
JUSTMENT OF TRIGGER SLACK.
17) Install tip attachment onto gun. Remove gun handle, install the filter,
lightly grease threads and re-install.
18) Place trigger in LOCK position. Install gun to hose, tightening
securely. Install tip where applicable. Gun is now ready for testing
and use.
HIGH PRESSURE!
INJECTION HAZARD!
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