Eaton PVE21 - Manuals - manualsarea.com

Page 2 - Table of Contents

2 Table of Contents Section Page I. Introduction 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. Purpose of Manual 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3 - Section I – Introduction; B. General Information

3 Section I – Introduction A. Purpose Of Manual This manual describes operational characteristics andoverhaul information for the PVE12, 19(*) and thePVE21(*)–** variable displacement piston pumps. Theinformation contained herein pertains to the latest designseries as listed in Table 1. B. General I...

Page 6 - Section II – Description

6 Section II – Description A. General Assembly of a typical pump package is shown in Figure 1. Six types of compensator subassemblies are used with thePVE series pumps. Refer to Section III for principles ofoperation. See Model Code for pressure settings. 1. Compensator (C), (Flat Cut-Off Type): A p...

Page 7 - Section III – Principles of Operation

7 Section III – Principles of Operation A. Piston Pump Rotation of the pump drive shaft causes the cylinder block,shoe plate and pistons to rotate. See Figure 2. The pistonshoes are held against the yoke face by the shoe plate. Theangle of the yoke face imparts a reciprocating motion toeach piston w...

Page 12 - Section IV – Installation and Operating Instructions; A. Installation Drawings; E. Hydraulic Fluid Recommendations

12 Section IV – Installation and Operating Instructions A. Installation Drawings The installation drawing listed in Table 2 will show installationdimensions and port locations. B. Mounting and Drive Connections CAUTION Pump shafts are designed to be installed in couplingswith a slip fit. Pounding ca...

Page 13 - F. Overload Protection

13 Sound Level Noise is only indirectly affected by the fluid selection, but thecondition of the fluid is of paramount importance in obtainingoptimum reduction of system sound levels. Some of the major factors affecting the fluid conditions thatcause the loudest noises in a hydraulic system are: 1. ...

Page 14 - Section V – Service and Maintenance; C. Adding Fluid to the System

14 Section V – Service and Maintenance A. Service Tools The following standard tools for overhauling the piston pumpare shown in Figure 8. Standard Tools and Equipment: 1. Torque wrench with short extension and sockets 2. 1” micrometer 3. 1” depth micrometer 4. External Truarc pliers 5. Internal Tru...

Page 16 - F. Replacement Parts

16 Figure 11. Special Bearing Race Installation Tools. “C” “B” “A” .375 Nominal Pipe Size A B C 1 1/2” 4” 1.625 1.900 2” 4” 2.125 2.375 Schedule 80 (extra heavy) .005 Figure 12. Shaft Seal Driver. Aluminum ring Heavy wall tubing Press ring on end of tubing. 0.125 2.500 1.439 1.440 0.250 6.50 1.500 ....

Page 18 - Section VI – Overhaul; C. Inspection Repair and Replacement

18 Section VI – Overhaul A. General CAUTION Before breaking a circuit connection, make certainthat power is off and system pressure has beenreleased. Lower all vertical cylinders, dischargeaccumulators, and block any load whose movementcould generate pressure. After removing the pump from the system...

Page 23 - D. Assembly of Compensator

23 3. Inspect spring (8) and (16) for wear and parallelism. Spring ends must be parallel. Replace if spring is warped orwear is evident. 4. Inspect seat (9) for wear in the area of spool contact. 5. Inspect spool (10) for excessive wear, galling, scratches, etc. If scratches exist across the spool l...

Page 26 - G. Assembly of Housing Parts

26 Figure 16. Removal of Front Bearing Race. Figure 17. Front Bearing Removal. ShaftSeal 1 1/2” heavy wall tubing 6” long.See Figure 11. Arbor Press Here Retaining Ring Figure 18. Front Bearing Installation. Shoulder 1 1/2” heavy wall tubing 6” long.See Figure 11. Arbor Press Here G. Assembly of Hou...

Page 29 - K. Shaft Bearing Preload Adjustment

29 2. Install pipe plug (69) into valve block (26) and secure. 3. Assemble a new O—Ring (68) on hex plug (67) and thread plug into place. K. Shaft Bearing Preload Adjustment (PVE 19/21 only) NOTE If the shaft bearings, shaft, valve block or housingwere not replaced, use the bearing spacer removeddur...

Page 30 - Section VII – Test Procedure; C. Preliminary Set–Up

30 Section VII – Test Procedure A. Test Conditions FLUID MEDIUM: SAE 10W meeting API service classificationMS or equivalent. FLUID TEMPERATURE: 120 ° F ± 5 ° F at pump outlet. Fluid entering the pump must be maintained below amaximum contamination limit of class four according toNAS1638. B. Prelimin...

Page 32 - H. Load Sensing Control Test

32 G. Performance Test of PVE12/19/21 Piston Pump with “CV”,“CVP”, “CVPC” and “CVPD”Compensator Control NOTE Refer to Figure 24 for location of circuit components. 1. Open load valve one (1) and turn compensator adjust- ment plug clockwise until seated. 2. Operate at 1200 RPM and 100 Psig outlet pre...