Ransburg RMA Direct A12867 - Manual (Page 79)

RMA-303 Direct Charge - Maintenance
LN-9266-11.3 76
Rear Manifold Removal / Replacement
Removal
Remove the rear manifold from the applicator
(see “Cascade Removal/Replacement” in the
“Maintenance” section). Inspect the valve
weep ports on the manifold body for leaks or
contamination. If any paint is visible in these
areas, the valves need to be replaced.
Weep Port Locations
Using the valve removal tool (A10766-00),
engage the four (4) pins on the tool to the
corresponding four (4) hole pattern in the
top of the valve. Using a 1/2” (13mm) sock-
et, end-wrench, or adjustable wrench, re-
move the valve by turning counter-
clockwise.
Valve Removal
Using the seat removal tool (A10756-00), in-
sert the smaller hex end into the block to en-
gage the seat female hex. Using a
3/8” (10mm) socket end-wrench, or adjustable
wrench, remove the seat by turning counter-
clockwise.
Seat Removal
Valve and Seat Inspection
Inspect the valves and seats for any build-up
of materials. Valves should be cleaned with
an appropriate cleaning solvent to remove the
material on it.
A seat should not be replaced unless there
are indications of valve leakage in operation.
Replacement
Lubricate the seat o-ring using a suitable lubri-
cant. By hand, using the seat tool (A10756-
00), carefully start the seat into the pocket for
the seat.
Carefully start the seat into the pocket. It may
be easily cross threaded.
Hand tighten the seat in place. Using a torque
wrench with a /8” (10mm) socket, torque the
valve seats to 15-20 lbs•in (1.7-2.3 Nm).
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