Ransburg M90 Handguns 77073, 77132 - Manual (Page 28)

AH-99-01.3
M90 Handguns - Maintenance
2 4 2 4 2 4 2 4 2 4
Cleaning and Inspection Cleaning and Inspection Cleaning and Inspection Cleaning and Inspection Cleaning and Inspection
1. Discard both o-rings. They should be
replaced with new ones.
2. Clean the parts in a suitable solvent.
3. Check all components for damage and
also check the needle for wear. Re-
place any damaged or worn parts.
Reassembly Reassembly Reassembly Reassembly Reassembly
1. Apply a light coating of dielectric grease
to a new o-ring and slide it over the
threads of the retaining nut until it sets
into the thread relief.
2. Apply a light coating of dielectric grease
to the control knob threads and screw it
into the retaining nut to the closed posi-
tion or until it bottoms.
3. Place the first washer, a new Teflon o-
ring, and then a second washer onto the
control knob stem. Slide the compo-
nents into the retaining nut bore.
4. Place the spring over the control knob
stem and into the retaining nut bore.
5. Secure the control knob in a vise with
the control knob stem pointing upwards.
Apply a small amount of medium
strength thread locker to the threads of
the control knob stem.
6. Screw the needle onto the control knob
stem and with a 1/4-inch wrench, tighten
the needle.
Reinstall Reinstall Reinstall Reinstall Reinstall
1. Turn the control knob to the open posi-
tion (screwed fully out, counterclock-
wise).
2. Screw the retaining nut into the handle
by hand. Using a 9/16-inch open end
wrench, secure the retaining nut into the
handle.
3. Screw the control knob to its closed po-
sition.
AIR V AIR V AIR V AIR V AIR VAL AL AL AL ALVE VE VE VE VE
Removal Removal Removal Removal Removal
1. Remove the trigger and ground spring
from the handle (refer to “Trigger” in the
“Maintenance” section).
2. With a standard blade screwdriver, re-
move the air valve cap from the back of
the handle.
3. Remove the compression spring from
the back of the air valve rod assembly.
4. From the front of the handle, push the air
valve rod assembly rearward until it can
be removed by hand from the back of
the handle. Do not use any tools to grip
the air valve for it can damage its seal-
ing surface.
5. With a 3/8-inch wrench, completely re-
move the retaining nut with the internal
u-cup seal.
Cleaning and Inspection Cleaning and Inspection Cleaning and Inspection Cleaning and Inspection Cleaning and Inspection
1. Remove the o-ring from the air valve
cap.
2. Clean all components with a suitable
solvent.
> A rod (1/8-inch diameter or smaller)
can be used to push the assembly out the
back of the handle until it can be gripped
with the fingers.
N O T E N O T E N O T E N O T E N O T E
ARCHIVE