Eaton 620 Service Manual
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Eaton 620 Service Manual

Mobile open circuit piston pump
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620 Mobile open circuit
Piston pump service manual
ADY074
ADY098

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Summary of Contents for Eaton 620

  • Page 1 620 Mobile open circuit ADY074 Piston pump service manual ADY098...
  • Page 2 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 3 Assembly torque values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 4 Bolts / Thru drive adapter kit See table 16 Cold start manifold (Destroke) 107275-011 O-ring (Destroke) 6022841-001 Link, feedback Standard seal kit: 9900758-000 Adjustable maximum displacement volume stop kit: 9900772-000 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 5: Parts Identification

    Control S/A, Electronic displacement control S/A 6040933-001 Spring feedback 473712 Screw, Hex socket 6035825-012 Coil, solenoid, 12V 6041646-001 Check valve S/A standard seal kit: 9900758-000 adjustable maximum displacement volume stop kit: 9900772-000 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 6: Exploded Assembly

    Exploded assembly Assembly with longer segment toward top of pump Steel side of valve plate must face End cover EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 7: Optional Assembly

    Optional assembly Torque control option 4 X Torque 8.2 ± 0.8 Nm Torque 161 ± 16.0 Nm EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 8 Optional assembly Electronic displacement control option 4 X Torque 4 X Torque 8.2 ± 0.8 Nm 4.0 ± 0.4 Nm EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 9 4 X Torque 30 ± 5.4 Nm Torque 115± 12 Nm Adjustable maximum stop option 4 X Torque 161 ± 16.0 Nm 4 X Torque 27 ± 2.7 Nm EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 10 Typical cross section Side view EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 11: Housing

    AA, AB, AC, AD, AF, AW 00, AA, AD, AG, AV 6030838-001 Housing AA, AB, AC, AD, AF, AW 0,1,3 00, AA, AD, AG, AV 6034961-001 Housing AT, AY 6038823-002 Housing (feedback sensor) EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 12 Seal, shaft, nitrile Swashplate – Item 8 Table 3 Table 3 - Swashplate (Item 8) Code position 29, 30 Part number Description 00,AA,AD,AG,AV 6022840-002 Swashplate AB,AE,AF,AH 6022840-001 Swashplate (Feedback sensor) EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 13 Shaft, drive, 1.25 tapered, str key, thru drive 16246-614 6036654-001 Shaft, drive, 1.25 straight key, 56 ext not 00 4999303-002 Shaft, drive, input 14 tooth, thru drive 14392-004 6035973-001 Shaft, drive, 1.25 Tapered, str key EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 14 4, 5, 6 Part number Description 6029369-001 Plate, valve (RH 74 cc) 6029369-002 Plate, valve (LH 74 cc) 6024330-001 Plate, valve (RH 98 cc) 6025319-001 Plate, valve (LH 98 cc) EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 15 End cover S/A, side port 98 cc metric not 00 6023824-004 End cover S/A, thru drive 98 cc metric 620 Series mobile piston pump end cover views Rear ported Side ported Thru drive EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 16 AA, AB, AC, AD, AF, AW 02, 03, 04 6024779-001 Plug AJ, AH 6033256-001 Assembly piston cap & sleeve AJ, AH 02, 03, 04, 06, 07 6033256-002 Assembly piston cap & sleeve EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 17 137.9-144.8 bar [2000-2100 lbf/in 9.65-12.41 bar [140-180 lbf/in 9901219-081 276-284 bar [4003-4119 lbf/in 9900771-006 196-204 bar [2843-2959 lbf/in 9900771-007 Torque 8.2 ± 0.8 Nm Pressure flow compensator Pressure compensator only EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 18 6028263-006 Coupler, 17 tooth 4999426-001 Coupler, 9 tooth 4999427-001 Coupler, 11 tooth 6024980-001 Coupler, 13 tooth 6024112-001 Coupler, 15 tooth 864458 Coupler, 14 tooth 864461 Coupler, 17 tTooth EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 19 Table 16 - Cold start manifold (Destroke) (Item 33) Code position 22, 23 Part number Description 0B,0C 631AA00288A-009 Destroke manifold with metri-pack connector 631AA00288A-003 Destroke manifold with integrated deutsch connector Torque 8.2 ± 0.8 Nm EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 20 Table 18 - Hex head cap screw (Item 49) Code position 26, 27 29, 30 Part number Description AA, AB 16136-607 Hex head cap screw AC, AD, AE 16136-812 Hex head cap screw EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 21 Electronic displacement control S/A – Item 63 Table 20 Table 20 - Electronic displacement control S/A (Item 63) Code position 14, 15 Part number Description 6041219-003 EDC, EP type 6041167-003 EDC, EPD type EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 22: Mobile Piston Pump Repair

    620 Mobile piston pump repair Cut section EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 23: General Information

    • 3/32” Allen wrench • Impact driver • Slide hammer for bearing removal • Dial indicator and accessories • Marker or paint pen • Petroleum jelly • Cleaning solvent EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 24: Disassembly

    . With the locator tool in place, tighten the adjustment screw so that control piston is compressed . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 25: Assembly

    . A shim kit is required if the crush ring is replaced . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 26: Eaton 620 Mobile Open Circuit Piston Pump Service Manual E-Pupi-Ts018-E2 November

    Note: Carefully remove the rotating group . 11. Remove shaft 13. Remove control piston Note: The open end of the control piston is positioned up . The control piston is allowed to rotate . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 27: Swashplate

    18. Remove cradle bearings screws and discard 16. Remove Bias Spring 16. Remove bias spring Caution: Socket head cap screws are easily damaged during repair with improper tool . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 28 Disassembly 19. Remove cradle bearings 21. Remove snap ring, shaft seal and discard. 20. Remove front bearing race EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 29 0 .03 mm ±0.03mm Between Piston Shoes (9) Shoe Piston Shoe face rides on swash plate . Shoe must swivel smoothly on ball . Movement up to 0.08mm EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 30 . Replace any part that is in ques- ing for damaged or stripped threads . If any tionable condition . thread is damaged, replace the housing . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 31 .001” to .003” location as the removed ( .03 to .08 mm) clearance . crush ring . Add shims to achieve proper shaft end play . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 32 . The new cap screw threads will be coated with loctite . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 33 9. Install Control Piston 7. Install Swashplate Note: With the Bias Spring in place, tilt the swashplate toward the spring and install the swashplate . Ensure that Bias Spring is engaged. EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 34 . Shim installation instructions are on page 26 . Caution: Use care while inserting shaft end through shaft seal . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 35 End Cover . 15. Install gasket and bearing Note: After Installation of Bearing, lubricate all components with clean hydraulic oil . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 36 . 17. Install compensator 19. Testing Perform functional test on pump according to Eaton test procedure . Contact your area sales manager for more information . EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 37 Torque 135 ± 13.5 N.m Steel side of valve plate must face End cover Thru-drive part option 4 X Torque 30 ± 5.4 Nm Torque 115± 12 Nm EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...

  • Page 38: Cold Start Manifold (Destroke)

    Torque 3.0 ± 0.2 Nm Torque 4.0 ± 0.4 Nm Adjustable maximum stop option 4 X Torque 161 ± 16.0 Nm 4 X Torque 27 ± 2.7 Nm EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 39 Press to bottom of hole split to Torque be on this AZIS 24.5 ± 2.5 Nm within ± 5° Torque Torque 24.5 ± 2.5 Nm 15.0 ± 1.5 Nm EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017...
  • Page 40 Tel: +41 (0) 21 811 4600 200335 China Fax: 952-294-7722 Fax: +41 (0) 21 811 4601 Tel: (+86 21) 5200 0099 www.eaton.com/hydraulics Fax: (+86 21) 2230 7240 © 2017 Eaton Corporation All Rights Reserved Printed in USA Document No. E-PUPI-TS018-E2 November 2017...

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