DeZURIK
Actuator Disassembly and Assembly
10. Drive both pins (B1K) thru the worm (B1D) and drive shaft (B1F).
11. Slide the drive shaft (B1F) out of the housing (B1A).
12. Remove the seal (B1J) from the housing (B1A).
13. Remove the o-ring (B1N) thru the bottom of the housing (B1A).
14. Remove old gasket sealant from the top of the housing (B1A) and bottom of the cover (B1B).
Buried Service (GB_A) actuator only - Remove old gasket sealant from the bottom of the
housing (B1A), valve adaptor (P1), top of cover (B1B) and bottom of cover (B12) mating
surfaces.
Actuator Assembly
1. Install a new seal (B1J) into the housing (B1A).
2. Slide the drive shaft (B1F) into the housing (B1A) and thru bearing race (B1G), thrust bearing
(B1H), bearing race (B1G), worm (B1D), bearing race (B1G), thrust bearing (B1H) and bearing
race (B1G).
3. Rotate the drive shaft (B1F) until the pin holes in the drive shaft and the worm (B1D) line up.
4. Drive the two pins (B1K) thru the worm (B1D) and drive shaft (B1F).
5. Apply removable thread sealant to the threads of pipe plugs (B1I) and install the pipe plugs flush
or below the surface of the housing (B1A).
6. Apply a light film of grease to a new o-ring (B1N) and insert it into the groove in the bottom of
the housing (B1A).
7. Grease the bearing (B1L) in the housing (B1A) and slide the gear (B1C) into the bearing in the
position noted in Step 7 of the ACTUATOR DISASSEMBLY section.
8. Above Ground Service (GS_A) actuator only - Apply a liberal amount of Lithium based
grease such as Shell Alvania EP2 or Mobilux EP2 to the gear (B1C), bearings (B1L) and worm
(B1D).
Buried Service (GB_A) actuator only - Pack the housing (B1) full of Lithium based grease
such as Shell Alvania EP2 or Mobilux EP2.
9. Apply a light film of grease to a new o-ring (B1N) and insert into groove in the cover (B1B).
10. Apply a bead of silicone sealant DOW RTV-732 (1055515) or similar to the housing (B1A) or
cover (B1B) mating surface. Grease the bearing (B1L) in the cover, slide the cover onto the
gear (B1C) and fasten with screws (B1M) to the housing.
11. Insert the drive key into the valve plug/gear (B1C) keyway.
12. Above Ground Service (GS_A) actuator only - Fasten the pointer (B1Q) to the gear (B1C)
with the two screws (B1R) in the position noted in Step 4. of the ACTUATOR DISASSEMBLY
section.
Buried Service (GB_A) actuator only - Apply a bead of silicone sealant DOW RTV-732
(1055515) or similar to the cover (B12) or cover (B1B) mating surface. Fasten the cover (B12)
to cover (B1B) with screws (B13).
13. Install the actuator on the valve as described in the "REPLACING ACTUATOR ON VALVE"
section of this Instruction.
D10456
(Continued)
Page 12
August 2012
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