Ransburg RMA Dual Purge Direct A12300 - Manual (Page 74)

RMA-303 Dual Purge/Direct Charge - Maintenance
69
the cup wash port to provide additional leverage
to remove the inner shaping air ring.
Shaping Air Manifold Reassembly
(Lightly lubricate all o-rings prior to assembling.)
Carefully install the inner shaping air ring onto the
turbine threads. Tighten in a clockwise direction
until it seats against the turbine. Tighten set screw
to 5 lbs•in (0.564 Nm) torque to prevent shaping
air ring/manifold from rotating. Do not over-tight-
en! If replacing the solvent tube, install into the
atomizer body first and tighten with a 3/16" end-
wrench. Before installing the other end into the
inner shaping air ring, check the position of the
1/4-20 threaded hole. If it is less than 180° from
the fitting installed in the atomizer body, you must
install a loop (as shown in Figure 37) to prevent
tube from becoming pinched when outer shaping
air ring is installed. Do not kink the tube when
installing loop (granny knot) (see Figure 37).
Turbine Removal/Replacement
Turbine Removal
Remove the turbine retaining ring by using the
spanner wrench A12088-00, turning the turbine
retaining ring in a counter-clockwise direction. Pull
the turbine out while rocking it from side to side.
Figure 35: Inner/Outer Shaping Air Manifold,
Solvent Tube Removal/Replacement
Figure 36: Turbine Removal
Turbine Replacement
Apply a light coating of o-ring lubricant to all the
o-rings and the threads of the turbine and turbine
retaining ring prior to assembly. Push the turbine
down into the cavity in the atomizer body. Align the
mark on the turbine with the mark on the atomizer
body. Install the turbine retaining ring and o-ring
by hand. Use the spanner wrench to tighten an
additional 1/8-1/4 turn. (Lightly lubricate o-ring with
petroleum jelly.) Check centering of fluid tube. If
fluid tube is centered, the turbine is fully seated.
If not, check tightness with spanner wrench. If
tube is not centered, again remove turbine and
check for causes, such as an o-ring fell off, fiber
optic not fully installed, foreign material on seating
surface, etc. Reinstall and recheck tube centering.
Figure 37: External Cup Wash Line
(Enlarged View)
Ransburg
LN-9263-08.5
COUNTER-CLOCKWISE
TO REMOVE TURBINE
RETAINING RING
OUTER SHAPING
AIR MANIFOLD
SHAPING AIR
MANIFOLD ASS'Y.
KNUCKLE O-RING
FERRULE AND FITTING
EXTERNAL CUP WASH LINE