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5.7  Removing Bleeder Valve and Check Valve Assembly 

  a. Unscrew bleeder valve (51) 

  b. Unscrew bleed plug (50) and remove O-ring packing  

  (27). 

  c. Remove valve spacer (29) check valve spring (14)  

    and check valve (44). 

  d. Remove O-ring (15) from check valve (44).
5.8  Removing High Pressure Check Valve 

  a. Unscrew plug (28) and remove O-ring packing (27). 

  b. Unscrew adjusting screw (26). 

  c. Remove guide rod (13), check valve spring (14), and  

    check valve (44). 

  d. Remove O-ring packing (15) from check valve (44).
5.9  Removing Release Valve 

  a. Remove release valve assembly (37) and O-ring  

    packing (27) 

  b. Disassemble valve assembly by rotating handle  

    counter-clockwise until valve stem is free from valve  

  body. 

  c. Remove O-ring packing from valve stem. 

  d. Remove screw (38) and seal (39) by turning counter- 

  clockwise. 

  e. Remove O-ring packing (40).
5.10 Removing Displacement Valve 

  a. Remove displacement valve assembly (41). 

  b. Remove O-ring packing (27). 

  c. Remove handle from stem by rotating handle counter- 

    clockwise. This is not required for normal cleaning. 

  d. Rotate the stem clockwise (using screwdriver in the  

    slot at the top of the stem) until it is free from body. 

  e. Remove nut back-up washers and ring packing from  

  stem.
5.11 Stem Body from Drip Pan 

  a. Take out three bolts (25). This is not required for  

    normal cleaning. 

  b.  Remove body assembly (2) from drip pan (3). This is 

not required for normal cleaning.

5.12 Inspection 

Visually inspect these parts for wear, damage, chips, 

cracks and stripped threads: 

    Body Assembly Threads 

  Piston 

    Piston Sleeve (6) 

    Displacement Stem and Mating Surface in Body 

    Back-up Washers 

    Moving O-ring Packings 

    Dead Weights 

    Piston and Cylinder Assembly – 1305D 

    Test Gauges – 1327D
Back-up washers must fit snugly into piston sleeve and 

into displacement valve body. Then check static (non-mov-

ing) packing for pinch marks, tearing or extrusion. Check 

all valve seats for scratches and roughness.
Replace all worn or damaged parts. Replace all O-ring 

packings at each overhaul. Coat O-ring packings with 

suitable lubricant before replacing, to prevent sticking and 

tearing during assembly and tightening of connections.
5.13 Reassembly 

When reassembling, use where possible the wrenches 

supplied with the equipment. These wrenches permit 

enough leverage to seal all connections. Excessive tight-

ening of parts with tools other than those supplied may 

cause distortion and eventual failure of threaded portions 

of the tester body assembly casting. When replacing 

O-ring packings, coat them with suitable lubricant to pre-

vent sticking and tearing during assembly and tightening 

of connection.
5.14 To Reassemble 

Body assembly on drip pans. 

Replace body assembly (2) on drip pan (3) using bolts 

(25).
5.15 Replacing Displacement Valve 

  a. Place O-ring packing between back-up washers. 

  b. Attach back-up washers and O-ring packing to dis 

    placement valve stem with nut. 

  c. Thread stem into body from the bottom – use screw 

    driver in the slot at top of stem. 

  d. Screw stem through body until the back-up washers,  

    and O-ring packing  are fully enclosed in the body. 

  

CAUTION: Do not damage O-ring packing when  

    threading stem through body. 

  e. Screw handle onto stem. 

  f.  Replace displacement valve assembly (41) with  

    O-ring packing (27) in body assembly (2).
5.16 Replacing Release Valve 

  a. Place O-ring packing (40) in body casting (2) hole. 

  b. Insert seat (39) into body casting hole. 

  c. Thread & tighten screw (38) into body casting hole. 

  

CAUTION: Be sure that stem of seat (39) fits into  

    screw hole. 

  d. Place O-ring packing on valve stem. 

  e. Screw handle onto valve stem. 

  f.  Screw valve stem into body until end of stem does not  

    extend beyond valve body. 

  

CAUTION: Do not damage O-ring packing when  

    threading valve stem through valve body. 

  g. Replace O-ring packing (27). 

  h. Replace release valve assembly (37) in body  

    assembly (2).
5.17 Replacing High Pressure Check Valve 

  a. Place O-ring packing (15) on check valve (44). 

  b. Slide check valve (44), check valve spring (14), and  

    guide rod (13) into body assembly (2). 

  c. Replace adjusting screw (26) and screw it in until it  

  stops. 

  d. Then turn (26) back two complete revolutions. 

  e.  Replace plug (28) with O-ring packing (27) in body 

assembly (2).

5.18 Replacing Bleeder Valve and Check  

     Valve Assembly 

  a. Replace O-ring packing (15) on check valve (44). 

  b. Slide check valve (44), check valve spring (14) and  

    valve space (29) into body assembly (2). 

  c.  Replace bleed plug (50) with O-ring packing (27) into 

body assembly (2).

5.19 Replacing Shuttle Valve, Shuttle Valve Plug and  

     Check Valve 

  a. Insert shuttle valve piston (3) into body (2). 

  b. Slide shuttle pin (31) into 1/8 inch (3mm) diameter  

    opening adjacent to fill tube (23) port. Apply slight  

    inserting pressure to shuttle pin (31) with plastic shaft  

    and operating shuttle valve (30) to insure proper 

    pin engagement. 

  c. Replace spring (32) directly behind shuttle pin (31)  

    and secure with set screw (33). Set screw must be  

    recessed by .050 inch (12mm) minimum. 

  d. Replace O-ring packing (15) on check valve (44). 

  e.  Slide check valve (44) and check valve spring (14) 

into body assembly (2).

5.20 Replacing Reservoir and Fill Tube 

Содержание 1305D

Страница 1: ... Manual for the ASHCROFT Type 1305D Deadweight Tester andType 1327D Portable Pump Installation and Maintenance Manual for the ASHCROFT Type 1305D Deadweight Tester andType 1327D Portable Pump I M002 10095_RevF_ 250 1526 _09 20 22 ...

Страница 2: ...of 20 2 ...

Страница 3: ...0018 New York NY 10017 1 Pressure Select a range so that the maximum ap plied pressure will never exceed the upper range limit 2 Vibration Excessive vibration could cause a loosen ing of components and abnormal wear resulting in loss of instrument accuracy or failure to provide valid data 3 Temperature Operation of the instrument in an en vironment where temperatures are in excess of design rating...

Страница 4: ...nt mass being acted upon by gravity For this rea son the masses supplied with the tester are stamped with two pressure values the value being contingent on the effective area of the piston and cylinder assembly selected 2 1 3 Specifications 1305D Accuracy Combined tolerance of weights and piston and cylinder assemblies within 0 1 of reading Weight toler ance within 0 05 of mass Piston and cylinder...

Страница 5: ...1 2 1 26 175 80 Model Piston Assembly Piston Net Number Pressure Range Piston Area Value Number of Weights by Value Weight L 5 L 1 L 2 L 4 L 5 bar Type Low High Low High Low High H 2 5 H 5 H 10 H 20 H 25 lbs kg 1305DB 20 1305DBH 20 1 20 5 2 5 1 1 2 1 2 63 29 1305DB 100 1305DBH 100 1 20 5 100 5 2 5 1 1 2 1 2 65 30 1305DB 150 0613 in 2 0123 in 2 1305DBH 150 1 30 5 150 3954 0791 5 2 5 1 1 2 1 4 75 34...

Страница 6: ...andard 1 4 inch internal NPT and 1 2 inch internal NPT fitting adapters are supplied Operating Fluid 1327D Light grade machine oils au tomotive petroleum base SAE 20 oils or other equivalent fluids suitable for use with Buna N O ring materials 1 5 pints required 7 liters 1327DH Most hydraulic oils of phosphate ester base brake fluids skydrol pydraul etc suitable for use with Butyl or Ethylene Prop...

Страница 7: ...DMG 250 1327DMGH 250 X X 0 10 0 40 0 250 40 18 1327DMGO 250 1327DMG 600 1327DMGH 600 X X 0 10 0 40 0 250 0 600 42 19 1327DMGO 600 1327DBG 10 1327DBGH 10 X X 0 10 36 16 1327DBGO 10 1327DBG 40 1327DBGH 40 X X 0 10 0 40 38 17 1327DBGO 40 bar 1327DBG 250 1327DBGH 250 X X 0 10 0 40 0 250 40 18 1327DBGO 250 1327DBG 600 1327DBGH 600 X X 0 10 0 40 0 250 0 600 42 19 1327DBGO 600 1327DAG 1000 1327DAGH 1000 ...

Страница 8: ...ndle mo tion Repeat this action until no air bubbles are observed in the fluid flow Note the bleed screw must be closed when the handle is being raised Push the shuttle valve in towards the pump body and continue pumping to the desired test pressure Open the release valve 37 to vent the pressure To check operation pull the shuttle valve outward close the release valve and operate the pump handle s...

Страница 9: ...of 20 9 Figure 2 1 Ashcroft Portable Deadweight Tester 1305D ...

Страница 10: ...he gauge to the desired position and re tightening nut adapter Repeat the above procedure to connect the gauge being tested to the offset pipe assembly 64 or 66 3 4 3 Bench Space Required Allow a space 10 inch 2 5 cm width 23 inch 5 8 cm depth 22 inch 5 6 cm height allows for testing gauges up to 8 5 inch 250 mm size 3 4 4 Storage Space Required 101 2 inch 27 cm width 221 2 in 57 cm depth 10 inch ...

Страница 11: ...ght of oil for various pressures A lighter oil may be used where low pressures are being checked a heavier oil where higher pressures are being tested The reservoir can be refilled while the test pump is operat ing under pressure 3 5 7 Caution Standard testers designed for oil service may not be used with water for oxygen service 3 5 8 Hydraulic service testers should not be filled with water or a...

Страница 12: ...uracy of the finished weights better than 1 20th of 1 To maintain deadweight tester accuracy handle the weights with care and keep the piston and cyl inder in clean condition The tester should be flushed with a solvent occasionally preferably every six months so that operating fluid is al ways clean This will prolong component life and provide protection against possible sticky action between the ...

Страница 13: ...f the tester body assembly casting When replacing O ring packings coat them with suitable lubricant to pre vent sticking and tearing during assembly and tightening of connection 5 14To Reassemble Body assembly on drip pans Replace body assembly 2 on drip pan 3 using bolts 25 5 15 Replacing Displacement Valve a Place O ring packing between back up washers b Attach back up washers and O ring packing...

Страница 14: ...of 20 14 Figure 2 2 Ashcroft Portable Test Pump Type 1327D ...

Страница 15: ...ylinder 3 Damaged piston plate damaged cylinder threads or damage to any component part that results in inferior performance or malfunctioning of the unit The piston cylinder assembly is available as a unit only This assures the user of maximum accuracy in his Ashcroft Deadweight Tester and maintains certified trace ability to the N I S T 6 0 WARRANTY SHIPPING INSTRUCTIONS HOWTO ORDER 6 1 Warranty...

Страница 16: ...ate with deadweights drops rapidly Unable to hold constant pressure Worn piston and cylinder assembly Use a heavy oil temporarily Replace piston cylinder Stacked dead weights wobble when spinning piston plate Damaged dead weights Check dead weights for visible damage bends dents nicks etc and alignment Piston plate as sembly will not spin Too heavy an oil grade being used Flush fill unit with prop...

Страница 17: ...of 20 17 4A ...

Страница 18: ...d Valve 27 70 52 1 LEE236 Nameplate 4 70 58 1 LK227 Pipe Extension Assembly 180 00 Qty Unit Item Per List No Asmy Part No DescriptionPrice 59 2 LD227A Bushing2 9 50 60 2 LN141 Adapter 25 40 61 4 LD186 Collar 9 50 62 4 LD117 Nut Adapter 25 20 63 1 LH227A Extension Pipe 67 00 64 1 LJ227 Lower Connection Pipe Assembly 65 1 LF227A Lower Connection Pipe 104 00 66 1 LG227A Back Connection Pipe 104 00 67...

Страница 19: ... psig 100 500 PSI WEIGHT SETS Weight Set Number of Weights with by High Pressure Value Part Carrying 25 50 100 200 500 Number Case psi psi psi psi psi LBH199C 1000 psi 1 3 2 3 LBH199B 2000 psi 1 3 2 3 2 LBH199A 3000 psi 1 3 2 3 4 LBH199 5000 psi 1 3 2 3 8 LBH199D 5000 to 10 10000 psi For complete 10 000 psi weight set order both part no LBH199 and LBH199D AVAILABLE WEIGHTS WEIGHT SETS ...

Страница 20: ...change without notice All sales subject to standard terms and conditions Ashcroft Inc I M002 10095_RevF_ 250 1526 _09 20 22 Ashcroft Inc 250 East Main Street Stratford CT 06614 5145 U S A Tel 203 378 8281 email info ashcroft com www ashcroft com ...

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