Emerson Shafer Installation, Operation And Maintenance Manual Download | Manualshive

Page: 1 / 13

background image

Installation, Operation and Maintenance Manual

PBC-01102001 Rev. A

January 2001

Shafer Poppet Block Control

POWER

PILOT

EXHAUST OR

RETURN OIL

Normally closed, double three-way poppet valve,
with open exhaust, manual and pilot actuated.

USASI SCHEMATIC

1
2
3
...
»

Summary of Contents for Shafer

Page 1: ... and Maintenance Manual PBC 01102001 Rev A January 2001 Shafer Poppet Block Control POWER PILOT EXHAUST OR RETURN OIL Normally closed double three way poppet valve with open exhaust manual and pilot actuated USASI SCHEMATIC ...

Page 2: ......

Page 3: ...f Contents Table of Contents Section 1 Introduction 1 1 Basic Construction 4 1 2 Operation 4 Section 2 Basic Check Out Procedures 2 1 Check No 1 7 2 2 Check No 2 7 Section 3 Bill of Material Section 4 Reconditioning and Assembly 4 1 Reconditioning 9 4 2 Assembly 9 Section 5 Disassembly of the Poppet Block ...

Page 4: ...tion The poppet block control consists of a double three way ported valve body containing two sets of inexpensive easily replaced nylon poppets to provide tight sealing poppet springs push pins power and pilot filters a manual lever assembly and pilot pistons for remote operation NOTE For low pressure applications 350 psi or less the power poppets item 2 in Figure 1 are steel backed Neoprene poppe...

Page 5: ...as is directed through tank port B Figure 2 Pilot Activation FIGURE 2A TANK A POWER PILOT EXHAUST OR RETURN OIL TANK B 5 NOTE Pilot pressure to the opposite pilot piston shown in Figure 2 will activate the opposite set of poppets and direct power gas to tank port A Pilot pistons are equipped with an orifice in order to vent the pilot pressure and allow the control to neutralize after stroking an a...

Page 6: ...R PILOT EXHAUST OR RETURN OIL TANK B 6 7 NOTE Movement of the opposite lever shown in Figure 4 will activate the opposite set of poppets and direct power gas to tank port B Release of the lever will allow the compressed poppet spring and power gas to reseat the power poppet and simultaneously unseat the exhaust poppet Power gas pressure remaining in the gas hydraulic tank is now vented through por...

Page 7: ... leakage throughout the control system In the neutralized position there should be zero power gas leakage from the exhaust port Power gas leakage is usually attributed to debris lodged between the power poppet and seat 2 2 Check No 2 Pull the manual lever to full travel and stroke the actuator partially open or closed NOTE The manual lever for open and close is indicated on the attached tag After ...

Page 8: ... 7 8 7 8 2 Table 1 Item Qty Description Item Qty Description 1 1 Valve Body 15 2 Piston O Ring 2 2 Power Poppet Cap 16 4 Piston Back Up Ring 3 2 Filter Cap 17 4 Piston Wear Ring 4 1 Power Connection Cap 18 8 Cap O Ring 5 1 Exhaust Connection Cap 19 2 Stem O Ring 6 2 Stem Cap 20 1 Check Valve O Ring 7 2 Stem 21 1 Check Valve 8 4 Poppet Nylon 22 2 Power Poppet Spring 8 2 Power Poppet Neoprene Exhaus...

Page 9: ...seat 2 Replace power and exhaust poppets on poppet pins Poppets may be tapped lightly into position with a drift pin and light hammer 3 Check travel of poppet assembly with the scale as shown in Figure 8B Make any adjustment for travel by grinding or filing to shorten the poppet pin or replace with a new pin if length is needed Ref 1 4 drill rod may be substituted for poppet pins in the 1 4 assemb...

Page 10: ...ction 5 Disassembly of the Poppet Block Disassembly and Poppet Block Section 5 Disassembly of the Poppet Block Figure 9 13 21 9 9 8 8 10 17 15 16 16 17 7 17 15 17 7 27 19 6 18 27 19 6 18 23 24 25 23 24 25 28 10 28 20 5 18 13 12 3 18 18 3 13 11 18 4 30 26 18 18 22 22 8 8 1 14 2 2 26 29 ...

Page 11: ...aps 2 remove springs 22 and power poppets 8 See reconditioning and assembly section for reinstallation 2 Exhaust Poppet Removal Disassemble the manual lever assembly by removing bolts 30 and bracket 29 Loosen stem caps 6 remove stem assembly 7 and pilot pistons 10 NOTE Pilot pistons 10 can be removed by threading one of the hex bolts 30 into the back of the piston 10 Remove exhaust poppets and pin...

Page 12: ......

Page 13: ...O Box 10305 Jubail 31961 Saudi Arabia T 966 3 340 8650 F 966 3 340 8790 24 Angus Crescent Longmeadow Business Estate East P O Box 6908 Greenstone 1616 Modderfontein Extension 5 South Africa T 27 11 451 3700 F 27 11 451 3800 EUROPE Berenyi u 72 100 Videoton Industry Park Building 230 Székesfehérvár 8000 Hungary T 36 22 53 0950 F 36 22 54 3700 www emerson com shafer 2017 Emerson All rights reserved ...

Reviews:

No comments

Related manuals for Shafer

Brand: B&K Pages: 8

Brand: GE Pages: 242

Brand: GE Pages: 24

Brand: Balanced Body Pages: 3

Brand: Landoll Pages: 83

Litmann Quality 3100

Brand: 3M Pages: 2

Brand: DAKO Pages: 25

Brand: 3M ESPE Pages: 50

Brand: VACGEN Pages: 13

Brand: Madrigal Pages: 5

Brand: MacDon Pages: 504

Brand: Malekko Pages: 2

Brand: Major Pages: 26

9NP-B7524 Series

Brand: Nautilus Pages: 2

Be strong NS 700X

Brand: Nautilus Pages: 34

Brand: Nautilus Pages: 21

Brand: VDO Pages: 15

Brand: VDO Pages: 20

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands