Eaton 620, ADY098, ADY074 Service Manual
620 Mobile open circuit
Piston pump service manual
ADY074
ADY098
2 EATON 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
3EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Part identification
Item Part number Quantity Description Page number
1 See table 1 1 Housing 11
2 See table 2 1
3 101680-225 1
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
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
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
25 107275-011 2
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
30 See table 15 1 Adapter, thru drive / thru drive adapter kit 19
31 See table 14 1
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
Seal, shaft
Ring, retaining, internal (Seal, shaft)
Gasket (endcover/ housing)
Plug, adjustable volume stop
O-ring (compensator/housing)
O-ring (secondary compensator/housing)
O-ring (end cover to aux mount)
O-ring adapter
/ thru drive adapter kit)
/ thru drive adapter kit
12
06
06
16
06
19
19
19
Standard seal kit: 9900758-000
Adjustable maximum displacement volume stop kit: 9900772-000
4 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Part identification
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
46 692867 1
47 115044-014 1
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
Adjustable stop screw
Lock nut
O-ring
09
09
09
standard seal kit: 9900758-000
adjustable maximum displacement volume stop kit: 9900772-000
5EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Exploded assembly
27
26
24
25
21
19
5
7
20
23
9
Assembly with
longer segment
toward top of pump
6
4
1
22
2
3
12
Steel side of valve plate
11
must face End cover
8
18
17
15
14
16
13
6 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Optional assembly
Torque control option
4 X Torque 8.2 ± 0.8 Nm
27
26
Torque
161 ± 16.0 Nm
20
61
25
24
62
19
23
23
27
7EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Optional assembly
Electronic displacement control option
4 X Torque
8.2 ± 0.8 Nm
27
26
23
24
66
4 X Torque
4.0 ± 0.4 Nm
65
63
23
25
64
19
67
23
1
8 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Optional assembly
161 ± 16.0 Nm
Thru-drive part option
17
28
18
Torque
49
115± 12 Nm
48
Adjustable maximum stop option
31
4 X Torque
32
30 ± 5.4 Nm
29
30
47
4 X Torque
20
45
4 X Torque
46
27 ± 2.7 Nm
9EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Typical cross section
Side view
10 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Housing – Item 1
Table 1
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)
11EATON 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
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)
12 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
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