Ransburg RMA Dual Purge Direct A12300 - Manual (Page 78)

RMA-303 Dual Purge/Direct Charge - Maintenance
73
† Carefully start the seat into the pocket.
It may be easily cross threaded.
NOTE
Using the seat removal tool (A10756-00), insert
the smaller hex end into the block to engage the
seat female hex. Using a 3/8" (10mm) socket end
wrench, or adjustable wrench, remove the seat
by turning counter-clockwise.
Figure 48: 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 ma-
terial on it.
Hand tighten the seat in place. Using a torque
wrench with a 3/8" (10mm) socket, torque the
valve seats to 15-20 lbs•in (1.7-2.3 Nm).
Figure 49: Valve Seat Torque
† A seat should not be replaced unless
there are indications of valve leakage in
operation.
NOTE
Valve Seat Replacement
Lubricate the seat o-ring using a suitable lubricant.
By hand, using the seat tool (A10756-00), carefully
start the seat into the pocket for the seat.
Figure 47: Valve Removal
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) socket, end wrench, or adjustable wrench,
remove the valve by turning counter-clockwise.
Ransburg
LN-9263-08.5