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REPAIR - TM-10-4610-232-34_201
Figure  2-49.1  Valve  Actuator  Lower  Section

TM-10-4610-232-34 Water Purification Unit Reverse Osmosis 3 000 GPH Trailer Mounted Flatbed Cargo 22-1/2 Ton 8 Wheel Tandem Model No. WTA-060 Manual
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INITIAL SETUP DISASSEMBLY TM    10-4610-232-34 2-42.1.  BUTTERFLY  VALVE  WITH  ACTUATOR  (LOWER  SECTION).  This  task  covers:  (YODEL  ROWPU-1  ONLY) a.  Disassembly. b.  Repair. c.  Reassembly. Tools,  see  TM  10-4610-232-12,  Appx  B, Equipment   Condition: Sec  Ill.  Ref  Code  (No.): ROWPU   shutdown.   Butterfly   valve   and Tool  Kit,  General  Mechanics  Automotive  (1) control  top  removed  from  actuator. Arbor  Press  (4) (para.  4-47.1,  TM  10-4610-232-12) Pliers, Retaining Ring, External (4) Pliers, Retaining Ring, Internal (4) General   Safety   Instructions: Tool,   Valve   Actuator   (10) WARNING Materials/Parts: Tape, Antiseize (Appx B, Sec II, Item 67) Observe  specific  Warnings  in  the  text. Preformed   Packings   (TM   10-4610-232-24P) a. Place a sleeve around rising stem (1) so that all pressure from the press will be applied to the surface of the mounting  adapter  (2). WARNING Severe  injury  or  death  may  occur  from  releasing  internal  parts  of  the  actuator  which  are under spring pressure inside the actuator. Do not attempt to disassemble the actuator unless  it  is  securely  and  properly  placed  within  a  press. b. (Refer to Figure 2-49.1). Place the actuator in place into a press with the ram of the press centered on the actuator.  When  placing  the  actuator  in  the  press,  be  sure  that  the  coupler  (3)  is  free  to  rotate. c.  Match  mark  adapter  (2)  with  cylinder  (4)  for  use  during  reassembly. d.  Slowly  push  the  mounting  adapter  (2)  into  the  actuator  cylinder  (4)  until  the  split  wire  retaining  ring  (5)  is accessible. e.  Remove  the  split  wire  retaining  ring  (5)  from  its  groove  in  the  actuator  cylinder  (4). f. Slowly release the ram of the press until the springs inside the actuator stop pushing against the ram. The piston assembly  (6)  will  rise  about  2.00  inch  above  the  actuator  cylinder  (4)  before  the  springs  reach  free  length  and  stop pushing. g.  Remove  retaining  ring  (5),  seal  retainer  (7),  vee  packing  (8),  mounting  adapter  (2)  O-ring  (9),  piston  assembly (6),  outer  spring  (10),  inner  spring  (11),  thrust  drive  (12),  and  thrust  bearing  (13). h.  Match  mark  coupler  (3)  to  cylinder  (4)  and  then  remove  spring  pin  (14),  coupler  (3),  drive  assembly  (15),  thrust bearing  (16),  and  O-ring  (17)  from  actuator  cylinder  (4). i. Remove  two  bearings  (18)  and  two  bearings  (19)  from  drive  assembly  (15)  and  cylinder  (4). CAUTION Damage to smooth surface of rising stem (1) will cause the actuator to fail. When removing the rising stem do not scar the smooth surface of the stem. Use flat surfaces near top of the stem at  threads  at  the  wrench  gripping  area. j. Remove  nut  (20),  lock  washer  (21),  gasket  (22),  rising  stem  (1)  from  piston  (23). k.  Remove  O-ring  (24)  from  piston  (23). Change  3 2-168.1







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