Eaton 620 User manual

620 Mobile open circuit
Piston pump service manual
ADY074
ADY098

2EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017

3EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Table of Contents
Contents
SERVICE PARTS
Parts identification ....................................................................................04
Exploded assembly ...................................................................................06
Optional assembly....................................................................................07
Typical cross section .................................................................................10
Housing ............................................................................................11
Shaft seal and Swashplate .............................................................................12
Shaft, drive and Key...................................................................................13
Rotating group S/A and Valve plate .......................................................................14
Bearing assembly and End cover S/A .....................................................................15
Control piston and Plug adjustable volume stop.............................................................16
Plugs and Compensator kits - factory set ..................................................................17
Compensator mounting screws and Coupler ...............................................................18
Thru drive adapter kit and Cold start manifold (Destroke) .....................................................19
Cover and Hex head cap screw..........................................................................20
Torque control S/A and Electronic displacement control S/A ...................................................21
REPAIR
620 Mobile piston pump repair ..........................................................................22
General information ..................................................................................23
Required tools ......................................................................................23
Special tools ........................................................................................23
Disassembly ........................................................................................24
Inspection, repair and part replacement ..................................................................29
Shimming process....................................................................................31
Assembly ..........................................................................................32
Testing ............................................................................................36
Assembly torque values ...............................................................................37

4EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Part identification
Standard seal kit: 9900758-000
Adjustable maximum displacement volume stop kit: 9900772-000
Item Part number Quantity Description Page number
1 See table 1 1 Housing 11
2 See table 2 1 Seal, shaft 12
3 101680-225 1 Ring, retaining, internal (Seal, shaft) 06
4 6021805-001 1 Bearing assembly, shaft (front) 06
5 5989757-001 1 Spring, bias 06
6 6021043-001 2 Bearing, swashplate / bearing kit 9900761-000 06
7 114995-010 2 Screw, cap, socket / bearing kit 9900761-000 06
8 See table 3 1 Swashplate 12
9 See table 4 1 Shaft, drive and key 13
10 See table 4 1 Key, driveshaft 13
11 See table 5 1 Rotating group S/A 14
12 See table 6 1 Plate valve 14
13 See table 7 1 Bearing assembly, shaft (rear) 15
14 Not Saleable 1 Ring, crush / bearing shim kit 9900776-000 06
15 96201-062 2 Slotted spring pin 1/4 06
16 6026023-001 1 Gasket (endcover/ housing) 06
17 See table 7 1 End cover S/A 15
18 114978-050 4 Screw, cap (housing/ endcover) 06
19 See table 9 1 Piston, control 16
20 See table 10 1 Plug, adjustable volume stop 16
21 See table 11 1 Plug (top case drain port) 17
22 See table 11 1 Plug (bottom case drain port) 06
23 115046-004 1 Plug (housing) 06
24 107275-017 1 O-ring (compensator/housing) 06
25 107275-011 2 O-ring (secondary compensator/housing) 19
26 See table 12 1 Compensator kits 17
27 See table 13 4 Screw, cap (compensator mounting) 18
28 See table 14 1 Coupler 18
29 104166-155 1 O-ring (end cover to aux mount) / thru drive adapter kit) 19
30 See table 15 1 Adapter, thru drive / thru drive adapter kit 19
31 See table 14 1 O-ring adapter / thru drive adapter kit 19
32 See table 14 4 Bolts / Thru drive adapter kit 19
33 See table 16 1 Cold start manifold (Destroke) 19
34 107275-011 3 O-ring (Destroke) 19
35 6022841-001 1 Link, feedback 38

5EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Part identification
standard seal kit: 9900758-000
adjustable maximum displacement volume stop kit: 9900772-000
Item Part number Quantity Description Page number
40 6024371-002 1 Feedback sensor, Non-contact 38
41 5996053-002 2 Screw, button head cap (sensor mount) 38
45 4993571-325 1 Adjustable stop screw 09
46 692867 1 Lock nut 09
47 115044-014 1 O-ring 09
48 See table 17 1 Cover 20
49 See table 18 2 Hex head cap screw 20
50 6026587-001 1 Cover plate sealing / Cover plate kit 9900782-000 37
51 6026902-001 1 Gasket, cover plate/ cover plate kit 9900782-000 37
52 114977-020 4 Screw, cap / cover plate kit 9900782-000 37
61 6033285-001 1 Assembly/ Torque control S/A 21
62 107275-013 1 O-ring 07
63 See table 19 1 Control S/A, Electronic displacement control S/A 21
64 6040933-001 1 Spring feedback 08
65 473712 1 Screw, Hex socket 08
66 6035825-012 1 Coil, solenoid, 12V 08
67 6041646-001 1 Check valve S/A 08

6EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Exploded assembly
11
12
13
16
14
15
17
18
6
19
20
9
8
5
7
4
1
2
22
3
23
21
25
24
26
27
Steel side of valve plate
must face End cover
Assembly with
longer segment
toward top of pump

7EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Optional assembly
Torque control option
23
61
25
24
27
26
4 X Torque 8.2 ± 0.8 Nm
62
19
20
Torque
161 ± 16.0 Nm
23
27

8EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
67
23 25
24
23
26
27
19
1
64
63
65
66
23
4 X Torque
8.2 ± 0.8 Nm 4 X Torque
4.0 ± 0.4 Nm
Optional assembly
Electronic displacement control option

9EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
48
29
28
17
18
30
32
49 31
4 X Torque
30 ± 5.4 Nm
Torque
115± 12 Nm
Optional assembly
47
20
45
4 X Torque
161 ± 16.0 Nm
4 X Torque
27 ± 2.7 Nm
46
Adjustable maximum stop option
Thru-drive part option

10 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Typical cross section
Side view

11EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Table 1 - Housing (Item 1)
Code position
8,9 12 14, 15 28 29, 30 Part number Description
05,06,07,08,10,16 1,2 AA, AB, AC, AD, AF, AW 0,1,3 AB, AE, AF, AH 6022838-001 Housing (feedback sensor)
05,06,07,08,10,16 3,4 AA, AB, AC, AD, AF, AW 0,1,3 AB, AE, AF, AH 6022838-002 Housing (feedback sensor) metric
05,06,07,08,10,16 1,2 AA, AB, AC, AD, AF, AW 0,1,3 00, AA, AD, AG, AV 6023256-001 Housing
05,06,07,08,10,16 3,4 AA, AB, AC, AD, AF, AW 0,1,3 00, AA, AD, AG, AV 6023256-002 Housing metric
05, 07 3 AJ 1,3 00 6036567-002 Housing metric
05,06,07,08,10,16 1,2 AJ, AH 0,1,3 00, AA, AD, AG, AV 6036567-001 Housing
05,06,07,08,10,16 1,2 AJ, AH 0,1,3 AB, AE, AF, AH 6023256-005 Housing (feedback sensor)
05,06,07,08,10,16 5 AA, AB, AC, AD, AF, AW 0,1,3 00, AA, AD, AG, AV 6029851-001 Housing
12 1,2 AA, AB, AC, AD, AF, AW 2 00, AA, AD, AG, AV 6030838-001 Housing
12 1,2 AA, AB, AC, AD, AF, AW 0,1,3 00, AA, AD, AG, AV 6034961-001 Housing
06 1 AT, AY 1 AB 6038823-002 Housing (feedback sensor)
Housing – Item 1
Table 1

12 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Shaft seal – Item 2
Table 2
Table 2 - Shaft seal (Item 2)
Code position
28 Part number Description
1,2 589332 Seal, shaft, uorocarbon
3 998643 Seal, shaft, nitrile
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)
Swashplate – Item 8
Table 3

13EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Shaft drive and key – Items 9 & 10
Table 4
Table 4 - Shaft drive and key (Items 9 & 10)
Code position
4,5,6 8,9 26,27 Key Part Description
074 05 00 4992730-004 6025210-001 Shaft, drive, 1.25 straight key, 56 ext
074 05 not 00 4992730-004 6025210-003 Shaft, drive, 1.25 straight key, 56 ext thru drive
074 06 00 - 6025208-001 Shaft, drive, input 14 tooth, 56 ext
074 06 not 00 - 6025208-003 Shaft, drive, input 14 tooth, 56 ext thru drive
074 07 00 4992730-005 6025211-001 Shaft, drive, 1.50 straight key, 62 ext
074 07 not 00 4992730-005 6025211-003 Shaft, drive, 1.50 straight key, 62 ext thru drive
074 08 00 - 6025209-001 Shaft, drive, input 17 tooth, 62 ext
074 08 not 00 - 6025209-003 Shaft, drive, input 17 tooth, 62 ext thru drive
098 05 00 4992730-004 4999808-001 Shaft, drive, 1.25 straight key, 56 ext
098 05 not 00 4992730-004 4999809-001 Shaft, drive, 1.25 straight key, 56 ext thru drive
098 06 00 - 6021804-001 Shaft, drive, input 14 tooth, 56 ext
098 06 not 00 - 4999303-001 Shaft, drive, input 14 tooth, 56 ext thru drive
098 07 00 4992730-005 4999810-001 Shaft, drive, 1.50 straight key, 62 ext
098 07 not 00 4992730-005 4999811-001 Shaft, drive, 1.50 straight key, 62 ext thru drive
098 08 00 - 4999806-001 Shaft, drive, input 17 tooth, 62 ext
098 08 not 00 - 4999807-001 Shaft, drive, input 17 tooth, 62 ext thru drive
098 10 not 00 14392-004 6023400-001 Shaft, drive, 1.25 tapered, str key, thru drive
098 16 00 16246-614 6036654-001 Shaft, drive, 1.25 straight key, 56 ext
098 12 not 00 - 4999303-002 Shaft, drive, input 14 tooth, thru drive
098 10 00 14392-004 6035973-001 Shaft, drive, 1.25 Tapered, str key

14 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Rotating group S/A – Item 11
Table 5
Valve plate – Item 12
Table 6
RH LH
Table 5 - Rotating group S/A (item 11)
Code position
4, 5, 6 29, 30 Part number Description
074 00, AA, AB, AD, AE,
AF, AG, AH, AV
6029085-001 Rotating group S/A (74cc)
098 00, AA, AB, AC, AD,
AE, AF, AG, AH, AV
6021400-001 Rotating group S/A (98cc)
Table 6 - Valve plate (item 12)
Code position
4, 5, 6 7Part number Description
074 R 6029369-001 Plate, valve (RH 74 cc)
074 L 6029369-002 Plate, valve (LH 74 cc)
098 R 6024330-001 Plate, valve (RH 98 cc)
098 L 6025319-001 Plate, valve (LH 98 cc)

15EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Bearing assembly – Item 13
Table 7
Table 7 - Bearing assembly (item 13)
Code position
4, 5, 6 Part number Description
074 6025207-001 Bearing assembly 74 cc
098 6021946-001 Bearing assembly 98 cc
End cover S/A – Item 17
Table 8
Table 8 - End cover S/A (item 17)
Code position
4, 5, 6 710, 11 13 26, 27 Part number Description
074 L,R AF 1 00 6028767-001 End cover S/A, side port 74 cc (diag ports)
074 L,R AF 1 not 00 6030266-001 End cover S/A, thru drive 74 cc (diag ports)
074 L,R AH 2 00 6028767-002 End cover S/A, side port 74 cc metric (diag ports)
074 L,R AH 2 not 00 6030266-002 End cover S/A, thru drive 74 cc metric (diag ports)
074 L,R AF 0 00 6028767-003 End cover S/A, side port 74 cc
074 L,R AF 0 not 00 6030266-003 End cover S/A, thru drive 74 cc
074 L,R AH 0 00 6028767-004 End cover S/A, side port 74 cc metric
074 L,R AH 0 not 00 6030266-004 End cover S/A, thru drive 74 cc metric
074 R AJ 1 00 6033171-001 End cover S/A, rear port 74 cc
074 R AG 2 00 6033171-002 End cover S/A, rear port 74 cc
098 L,R AB 1 00 6023848-001 End cover S/A, side port 98 cc (diag ports)
098 L,R AB 1 Not 00 6023824-001 End cover S/A, thru drive 98 cc (diag ports)
098 L,R AD 2 00 6023848-002 End cover S/A, side port 98 cc metric (diag ports)
098 L,R AD 2 Not 00 6023824-002 End cover S/A, thru drive 98 cc metric (diag ports)
098 L,R AB 0 00 6023848-003 End cover S/A, side port 98 cc
098 L,R AB 0 Not 00 6023824-003 End cover S/A, thru drive 98 cc
098 L,R AD 0 00 6023848-004 End cover S/A, side port 98 cc metric
098 L,R AD 0 Not 00 6023824-004 End cover S/A, thru drive 98 cc metric
098 R AE 0 00 6023848-005 End cover S/A, side port 98 cc metric
098 R AE 0 AG 6023824-005 End cover S/A, thru drive 98 cc metric
098 L,R AA 1 00 6028558-001 End cover S/A, rear port 98 cc
098 L,R AC 2 00 6028558-002 End cover S/A, rear port 98 cc
098 L,R AC 0 00 6028558-004 End cover S/A, rear port 98 cc
098 L,R AD 0 00 6023848-004 End cover S/A, side port 98 cc metric
098 L,R AD 0 not 00 6023824-004 End cover S/A, thru drive 98 cc metric
Thru drive
Side portedRear ported
620 Series mobile piston pump end cover views

16 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Control piston – Item 19
Table 9
Table 9 - Control piston (Item 19)
Code position
14, 15 29, 30 Part number Description
AA, AB, AC, AD, AF, AW, AV 00, AA, AC, AB, AD, AG 6023317-001 Control piston
AJ, AH 00, AA, AC, AB, AD, AG 6033954-000 Control piston, Min displacement setting 0%
AJ, AH AE 6033954-010 Control piston, Min displacement setting 10%
AJ, AH AH, AV 6033954-012 Control piston, Min displacement setting 12%
AJ, AH AF 6033954-020 Control piston, Min displacement setting 20%
AT, AY AB 6039060-003 Control piston
Plug, adjustable volume stop – Item 20
Table 10
Table 10 - Plug, adjustable volume stop (Item 20)
Code position
14, 15 24, 25 Part number Description
AA, AB, AC, AD, AF, AW, AV 01 5994111-001 Plug assembly
AA, AB, AC, AD, AF, AW 05 5994111-002 Plug assembly
AA, AB, AC, AD, AF, AW 02, 03, 04 6024779-001 Plug
AJ, AH 01 6033256-001 Assembly piston cap & sleeve
AJ, AH 02, 03, 04, 06, 07 6033256-002 Assembly piston cap & sleeve

17EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Plugs – Items 21 & 22
Table 11
Table 11 - Plugs (Item 21 & 22)
Code position
12 Part number Description
1 115046-016 Plug 1.3125-12
2 115046-016 Plug 1.3125-12
5 115046-016 Plug 1.3125-12
3 9237-006 Plug M33 X 2.0
4 9237-006 Plug M33 X 2.0
Compensator kits – Items 24, 25 & 26
Table 12 - Factory set
27
26
Torque
8.2 ± 0.8 Nm
24
25
Pressure flow compensator
Pressure compensator only
Table 12 - Compensator kits (Items 24, 25, & 26)
Code position
14, 15 16,17 Pressure limit setting 18,19 Flow setting 22, 23 Kit number
AA 28 206.8-213.7 bar [3000-3100 lbf/in2] 23 23.10-25.17 bar [335-365 lbf/in2] 00 9901219-001
AA 32 226.5-233.4 bar [3285-3385 lbf/in2] 16 13.79-16.55 bar [200-240 lbf/in2] 00 9901219-002
AA 27 199.9-206.8 bar [2900-3000 lbf/in2] 25 23.44-26.89 bar [340-390 lbf/in2] 00 9901219-003
AA 43 275.8-282.7 bar [4000-4100 lbf/in2] 16 13.79-16.55 bar [200-240 lbf/in2] 00 9901219-008
AA 39 258.6-265.4 bar [3750-3850 lbf/in2] 28 26.20-28.96 bar [380-420 lbf/in2]00 9901219-049
AA 15 151.7-158.6 bar [2200-2300 lbf/in2] 34 4.50-6.90 bar [66-100 lbf/in2] 00 9901219-063
AA 19 168.9-175.8 bar [2450-2550 lbf/in2] 20 17.24-19.99 bar [250-290 lbf/in2] 00 9901219-080
AA 12 137.9-144.8 bar [2000-2100 lbf/in2] 10 9.65-12.41 bar [140-180 lbf/in2] 00 9901219-081
AC 28 276-284 bar [4003-4119 lbf/in2] 00 - 00 9900771-006
AC 20 196-204 bar [2843-2959 lbf/in2] 00 - 0A 9900771-007

18 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Compensator mounting screws – Item 27
Table 13
Coupler – Item 28
Table 14
Table 14 - Coupler (Item 28)
Code position
4,5,6 26, 27 Part number Description
074 AA 6028263-001 Coupler, 9 tooth
074 AB 6028263-002 Coupler, 11 tooth
074 AC 6028263-003 Coupler, 13 tooth
074 AD 6028263-004 Coupler, 15 tooth
074 AE 6028263-005 Coupler, 14 tooth
074 AF 6028263-006 Coupler, 17 tooth
098 AA 4999426-001 Coupler, 9 tooth
098 AB 4999427-001 Coupler, 11 tooth
098 AC 6024980-001 Coupler, 13 tooth
098 AD 6024112-001 Coupler, 15 tooth
098 AE 864458 Coupler, 14 tooth
098 AF 864461 Coupler, 17 tTooth
Table 13 - Compensator mounting screws (Item 27)
Code position
14, 15 22, 23 Part number Description
AA, AB, AC, AD, AF, AW, AT, AY 00, 0A, 0U 114953-030 Screw, cap (compensator mounting)
AA, AB, AC, AD, AF, AW 0B, 0C, 0D 114953-065 Screw, cap (compensator mounting)
AH, AJ, AV 00, 0A, 0S, 0T, 0U, 0V 114953-070 Screw, cap (compensator mounting)

19EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Thru drive adapter kit – Items 29, 30, 31 & 32
Table 15
Cold start manifold (Destroke) – Item 33
Table 16
Table 15 - Thru drive adapter kit (Items 29, 30, 31 & 32)
Code position
4,5,6 26, 27 Part number Item 29 Item 30 Item31 Item32 Description
074, 098 AA, AB 9900774-002 104166-155 4999463-001 8761-152 114977-030 SAE A-pad adapter 13T (74, 98cc)
074 AD 9900774-005 104166-155 4999351-001 8761-155 114977-050 SAE B-pad adapter 15T (74 cc)
074 AE, AF 9900774-004 104166-155 4999353-001 8761-159 114977-055 SAE C-pad adapter (74 cc)
074 AC 9900774-006 104166-155 4999351-001 8761-155 114977-025 SAE adapter 13T(74 cc)
098 AC, AD 9900774-003 104166-155 4999351-001 8761-155 114977-030 SAE B-pad adapter (98 cc)
098 AE, AF 9900774-001 104166-155 4999353-001 8761-159 114977-035 SAE C-pad adapter (98 cc)
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
0D 631AA00288A-003 Destroke manifold with integrated deutsch connector
29
30
32
31
27
25
24
33
34
Torque 8.2 ± 0.8 Nm

20 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Cover – Item 48
Table 17
Hex head cap screw – Item 49
Table 18
Table 17 - Cover (Item 48)
Code position
26, 27 29, 30 Part number Description
AC, AD AA 110011-000 Cover, B-pad
AA, AB AA 70142-600 Cover, A-pad
AE AA 4998392-001 Cover, C-pad
Table 18 - Hex head cap screw (Item 49)
Code position
26, 27 29, 30 Part number Description
AA, AB AA 16136-607 Hex head cap screw
AC, AD, AE AA 16136-812 Hex head cap screw