Section 6
MAINTENANCE
28
Figure 6 ---11 Pilot Valve (P/N 250038 ---668)
* Repair Kit P/N 250038---673
** Repair Kit P/N 250031---738 (coil)
PRESSURE REGULATOR VALVE MAINTE-
NANCE
Refer t o Figure 6 --- 12. Pressure regula tor valve (P/ N
041517) maintena nce normally requires the re-
placement of the internal diaphragm. Use repair kit
number 041742 and follow t he procedure below for
proper installation. Prior to performing this, be sure
all pressure is removed from the system.
1. Loosen the locknut and turn the adjusting screw
counterclockwise until the inner spring tension
is relieved. The adjusting screw should turn
freely when the spring tension is relieved.
2. Remove the spring housing form the body to al-
low access to internal parts.
3. Next, remove the spring button and the spring.
The dampener will stay inside the spring as it is
removed. Leave the dampener inside the spring
as there is no need to remove it.
4. After removing the spring, remove the gasket
stop and brass gasket.
5. At this time, remove the pressure plate nut and
disassemble the pressure plate, diaphragm,
diaphragm gasket (rubberized asbestos), seat
disc and seat gasket.
6. Remove and discard the seat ring.
Figure 6---12 Pressure Regulator Valve
* Repair Kit P/N 041742
(P/N 041517)
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