Wilkerson T12 - Manual (Page 2)

Lightly grease with provided lubricant.
Inaspect for nicks, scratches, and surface imperfections.
If present, reduced service life is probable and future replacement
should be planned.
Clean with lint-free cloth.
1/4" and 3/8" B12 Filter / Regulator Series, and T12 Precision Filter Regulator 83-954-000
5. To decrease regulated pressure settings, always reset from a pressure
lower than the final setting required. Example, lowering the secondary
pressure from 550 to 410 kPa (80 to 60 psig) is best accomplished by
dropping the secondary pressure to 350 kPa (50 psig), then adjusting
upward to 410 kPa (60 psig).
6. When desired secondary pressure settings have been reached, push the
knob down to lock this pressure setting.
Deflector
Filter Holder
(Hand Tighten)
Element
Baffle
Bowl Guard
O-ring
Retaining Collar
(Hand Tighten
Plus 1/4 Turn)
Retaining
Collar
(Hand Tighten
Plus 1/4 Turn)
Metal Bowl
(Sight Glass
Shown)
Polycarbonate
Bowl
(See Warning)
(Do Not
Scratch
Internal
Surfaces)
Manual
Drain
Body
(Internal
Surfaces)
Valve Assembly
O-ring
(Not used on T12)
O-ring
Spring
(Valve Return)
Control
Spring
Diaphragm
Assembly
Knob
Bonnet
Thrust Washer
Spring Guide/
Adjusting Screw
Assembly
Piston
Drain
!
Service
Caution: Disconnect or shut off air supply and exhaust the primary
and secondary pressures before servicing unit. Turning the
adjusting knob counterclockwise does not vent downstream
pressure on non-relieving regulators. Downstream pressure must
be vented before servicing regulator.
Note: Grease packets are supplied with kits for lubrication of seals. Use
only mineral based grease or oils. Do not use synthetic oils such
as esters. Do not use silicones.
Note: After servicing unit, turn on air supply and adjust regulator to the
desired downstream pressure. Check unit for leaks. If leakage
occurs, do not operate - conduct repairs and retest.
Servicing Filter Element -
1. Unscrew the bottom threaded collar and remove bowl.
2. Unscrew the baffle and then remove element.
3. Clean all internal parts and bowl before reassembling. See polycarbonate
bowl cleaning section. IMPORTANT: The Filter / Regulator will not operate
properly if the deflector is not installed properly. The deflector must be
installed between the filter holder and the filter body.
4. Install new element.
5. Attach baffle and finger tighten firmly.
6. Replace bowl seal. Lightly lubricate new seal to assist with retaining it in
position.
7. Install bowl into body and tighten collar; hand tight, plus 1/4 turn.
Servicing Regulator -
1. Disengage the adjusting knob by pulling upward. Turn adjusting knob
counterclockwise until the compression is released from the pressure
control spring.
2. Remove the bonnet and bowl assemblies by unscrewing the two
threaded collars.
3. Remove diaphragm assembly from bonnet assembly.
4. Remove filter stem, filter element, valve assembly, and valve return spring.
5. Clean and carefully inspect parts for wear or damage. If replacement is
necessary, use parts from service kits. Clean bowl. See polycarbonate
bowl cleaning section.
6. Lubricate o-ring and vee packing seals with grease found in service kits.
7. Install valve return spring, valve assembly, (seat) insert and its o-rings,
and filter stem. IMPORTANT: The Filter / Regulator will not operate
properly if the defector is not installed properly. The deflector must be
installed between the filter holder and filter body.
8. Install filter element and firmly tighten baffle onto the filter holder.
9. Install diaphragm assembly into bonnet assembly. Assemble bonnet
assembly to body and tighten threaded collar hand tight, plus 1/4 turn.
10. Install bowl into body and tighten collar; hand tight, plus 1/4 turn.
* Element kits include body / bowl seal.
† Grease in kits is silicone free.
Service Kits Available
B12 T12
Description
1/4" & 3/8" 1/4" & 3/8"
5 Micron Element* GRP-96-344 GRP-96-344
40 Micron Element* GRP-96-343 GRP-96-343
Bowl Guard Kit GRP-96-345 GRP-96-345
Non-Relieving
Regulator Repair Kit
†
RRP-96-307 —
Relieving Regulator
Repair Kit
†
RRP-96-306 RRP-96-305
Sight Gauge Kit GRP-96-346 GRP-96-346
Metal Bowl Kits
Manual Drain
GRP-96-348 GRP-96-348
Piston Drain GRP-96-353 GRP-96-353
Sight Gauge &
Manual Drain
GRP-96-349 GRP-96-349
Sight Gauge &
Piston Drain
GRP-96-352 GRP-96-352
Polycarbonate Bowl Kits
Manual Drain
GRP-96-347 GRP-96-347
Piston Drain GRP-96-351 GRP-96-351
Drain Kits
Manual Drain
GRP-96-340 GRP-96-340
Piston Drain GRP-96-354 GRP-96-354