Wilkerson H12 - Manual (Page 2)

1/4" & 3/8" H12 Pilot Controlled Regulator 83-957-000
Service Kits Available
Description 1/4", & 3/8"
H12 Pilot Controlled Regulator
Gauges:
Low Pressure RRP-96-664
0 to 414 kPa (0 to 60 PSIG)
Low Pressure
0 to 207 kPa (0 to 30 PSIG)
RRP-96-663
Standard Pressure
0 to 1103 kPa (0 to 160 psig)
RRP-96-665
Non-Relieving
Regulator Repair Kit*
RRP-96-309
Relieving Regulator
Repair Kit*
RRP-96-310
* Grease in kit is silicone free.
Lightly grease with provided lubricant.
Inspect for nicks, scratches, and surface imperfections. If
present, reduced service life is probable and future
replacement should be planned.
Clean with lint-free cloth.
B. Servicing the Valve Assembly-
1. Exhaust system air pressure as previously described. Then
remove bottom cap by unscrewing it from body. Next,
remove valve assembly, o-ring, cap o-ring and valve return
spring.
2. Next, disassemble, clean, and carefully inspect parts for
wear and/or damage. If replacement is necessary, use
parts from service kits.
3. Lubricate o-ring and sliding surfaces using grease supplied
with service kit.
4. Install parts as shown in Figure 1.
5. Lubricate cap o-ring and install it in o-ring groove on cap.
Then screw cap into body until the cap bottoms out in
body (See Figure 1).
6. Turn on air supply and adjust to desired secondary pressure
as described in the Operation section.
Turn on air pressure and check regulator for leakage. If leakage
occurs, DO NOT OPERATE — conduct repairs again.
If you have questions concerning how to service this unit,
contact your local authorized dealer or your customer service
representative.
Bonnet
O-Ring
Piston
Spring,
Valve Return
O-Ring,
Bottom Cap
O-Ring,
Vent Seal
Valve
Assembly
Body
Collar
(Hand tight
plus 1/4 turn)
Bottom Cap
Torque:
2.3 to 2.8 Nm
(20 to 25 in. lb.)
Figure 1