Danfoss DDC Service guide

Parts Manual
DDC Axial Piston Pumps
Size 20/24
www.danfoss.com
Parts Manual
Revision history Table of revisions
Date Changed Rev
March 2022 Added AN (Detent), Changed document number from 'AX00000134' to 'AX152886483058' 0503
June 2019 Added DDC24 0401
July 2017 Updated to Engineering Tomorrow design 0302
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Parts Manual

Contents

General information
Service parts identification........................................................................................................................................................... 4
Nameplate...........................................................................................................................................................................................4
Date code............................................................................................................................................................................................ 5
About service bulletins...................................................................................................................................................................5
Procedure to identify a part..........................................................................................................................................................5
Regional part numbers............................................................................................................................................................. 5
Adobe Acrobat 2-page viewing..................................................................................................................................................6
Order code.......................................................................................................................................................................................... 7
Displacement, valve plate, control arm
Displacement.....................................................................................................................................................................................8
Valve Plate...........................................................................................................................................................................................9
Control Arm........................................................................................................................................................................................9
Neutral assist mechanism
AN (Detent).......................................................................................................................................................................................10
Shaft
Shaft AA-BC......................................................................................................................................................................................12
Shaft DA-DD.....................................................................................................................................................................................14
Loop flushing
Loop Flushing 2-3 and D............................................................................................................................................................. 16
End cap
End Cap AAC9................................................................................................................................................................................. 18
End Cap AAN1.................................................................................................................................................................................20
End cap AAN3..................................................................................................................................................................................22
End cap AAN9..................................................................................................................................................................................24
End cap ABN1..................................................................................................................................................................................26
End cap ABN3..................................................................................................................................................................................28
End cap ABN9..................................................................................................................................................................................30
End cap ACA0 and ACD0.............................................................................................................................................................32
End cap BCF0 and BCFN.............................................................................................................................................................. 34
Charge pump
Charge Pump 3-5 and B-C...........................................................................................................................................................36
Charge Pump D...............................................................................................................................................................................38
Charge Pump E, F and G..............................................................................................................................................................40
Charge pressure relief
Charge Pressure Relief 5-18........................................................................................................................................................42
System protection
System Pressure Protection, 00N, 14A-30N..........................................................................................................................44
System Pressure Protection 32A-34N, 00N, 14A-25N....................................................................................................... 46
System Pressure Protection 28A-34N.....................................................................................................................................48
Input flange
Input Flange A-E.............................................................................................................................................................................50
Input Flange F-L..............................................................................................................................................................................52
Overhaul seal kit
DDC20 Overhaul Seal Kit.............................................................................................................................................................54
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Danfoss | March 2022 AX152886483058en-000503 | 3
MADE IN JAPAN.
Serial No.
J110912345
Model Code
Model No./Ident No.
11083308
DDC 20 A L LB RSA
NN A N 3 AB ACD0 C
07 25 A NNN NNN
Parts Manual

General information

Service parts identification

Nameplate

The following information and procedure is used to identify the module group, item number, manufacture date, part number, and part name of the parts included in the .
The parts listed include all parts which may be used when performing either “Minor Repairs”, “Major Repairs” or “Conversions” on the DDC20.
Each unit will have a nameplate affixed to the housing. The nameplate of the DDC20 will include the following information:
Model code
The Danfoss model code completely defines the specific unit and must be used when ordering parts to service this product.
Model/material number
The Danfoss model number (also known as material number) is used by the factory in manufacturing. On repeat orders, a complete unit can be ordered by the model number.
Serial number
The Danfoss serial number is used to identify the manufacture date and the unit sequence in the build. The serial number is also used to identify the units warranty time period.
The letter code indicates the location of original manufacture (assembly). The first number (2 digits) indicates the year of manufacture. The second number (2 digits) indicates the
calendar week of manufacture. The third number (5 digits) is a sequential number used to identify a specific unit.
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Parts Manual
General information

Date code

About service bulletins

The date code is defined as the year and week of manufacture. The same item number may list more than one part number. This indicates that there is more than one configuration for that item number. You will see that there are different date codes for the different part numbers. Find the date code of your unit from the nameplate to determine which service part number you need to order.
Example: The service part desired is item G30
Order Code Item Date Begin Date End Part Number Part Name Qty. per
80 G30 89-17 8000243 End cap gasket 1
G30 89-16 8000151 End cap gasket
(SB-1995-006)
Model/Kit
1
All units using this order code with a date code prior to 89-17 must use part number “8000151.” All units with a date code of 89-17 and newer must use part number “8000243.”
A Service Bulletin Number (SB-_ _ _ _ - _ _ _) may follow the “Part Name” of the part you desire. You must read that Service Bulletin prior to ordering that part. The information contained in these Service Bulletins, as of the print date of this bulletin, are included at the end of this manual. Service Bulletins contain more detailed information such as interchangeability, what additional parts are involved, etc. It is suggested that you add additional Service Bulletins to this manual as you receive them.

Procedure to identify a part

The modular design of this product results in a simplified service parts list and part number identification procedure.
The same item numbers are used for same part names on all units within a product type. A part number that has another number following it in parentheses is done to make this a world wide manual.

Regional part numbers

Some part numbers are region specific and should be ordered accordingly. As an example, the part number (example: 314583 (9008000-0118) will be used. The first number is sold
in Germany. The number in parentheses is sold in the United States. Customers would order 9008000-0118 if ordering the part in the United States.
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Parts Manual
General information

Adobe Acrobat 2-page viewing

While viewing manual in Adobe Acrobat, the following settings need to be applied to ensure proper page display.
1. Select “View” “Page Display” “Two Page View”
2. Select “View” “Page Display” “Show Cover Page in Two Page View”
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DDC
2
0
L
B
R
S
N
N 3
A
N
A
A B
7
5 AC D
A
5
2
Frame
Size
Valve plate
Neutral assist mechanism
Control arm
Bypass valve
Loop flushing
Charge pump displacement
Shaft
End cap/auxiliary pad
C E G M
P108 588E
H L
2
NK F J
C 0
0
S
NA NXNN N N
ZP
Input flange
Charge pressure relief setting
Paint and nametag
System pressure protection, port A
System pressure protection, port B
Special hardware features
Series
A
Rotation
L
Product Version
Parts Manual
General information

Order code

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*E320
E225
E200
*E220
E325
*E210
E300
E100
E100
E105
C010
*E320
E325
E300
E200
E225
*E220
*E210
A100
E105
C010
A100
E101 822E
(LSA)
(RSA)
Parts Manual

Displacement, valve plate, control arm

Displacement

* Included in overhaul seal kit Q210
Generic housing used to show part location only.
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Parts Manual
Displacement, valve plate, control arm
Order code: 20 parts
Item Date Begin Date End Part Number Part Name Qty. per
A100 11-34 11051773 Cylinder block kit (DDC20 only) 1 A100 19-25 11229017 Cylinder block kit (DDC24 only) 1

Valve Plate

Order code: LA parts
Item Date Begin Date End Part Number Part Name Qty. per
C010 11-34 11065497 Valve plate, CCW, low control moment 1
LB parts
C010 11-34 11087147 Valve plate, CCW, high neutral seeking 1
Model/Kit
Model/Kit
RA parts
C010 11-34 11050370 Valve plate, CW, low control moment 1
RB parts
C010 11-34 11091396 Valve plate, CW, high neutral seeking 1

Control Arm

Order code: LSA and RSA common parts
Item Date Begin Date End Part Number Part Name Qty. per
E100 11-34 11230539 Swashplate, axial offset 1 E105 11-34 11050101 Thrust plate 1 E210 11-34 11050327 Lip seal 1 E220 11-34 9004104-1360 O-ring 1 E225 11-34 FBE056 Retaining ring 1 E320 11-34 9004104-1360 O-ring 1 E325 11-34 FBE056 Retaining ring 1
Model/Kit
LSA parts
E200 11-34 11083526 Journal bearing carrier assembly 1 E300 11-34 11083525 Journal bearing carrier assembly 1
RSA parts
E200 11-34 11083525 Journal bearing carrier assembly 1 E300 11-34 11083526 Journal bearing carrier assembly 1
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G150
G210
G330
G320
G230
G220
G300
G310
G100
P400750
G200
Parts Manual

Neutral assist mechanism

AN (Detent)

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Parts Manual
Neutral assist mechanism
Order code: AN (Detent)
Item Date Begin Date End Part Number Part Name Qty. per
G100 22-08 11247397 Lever-Detent, DDC 1 G150 22-08 11247398 Plate-Detent, DDC 1 G200 22-08 AAN0802501 Screw-Soc HD, M8x25 JIS B1176 1 G210 22-08 AAM0802001 Screw-Soc HD, M8x20 JIS B1176 2 G220 22-08 AAM0603001 Screw-Soc HD, M6x30 JIS B1176 2 G230 22-08 11050795 Spring Washer 2 G300 22-08 1040323 Spring Case 1 G310 22-08 B1575A-M6 Grease Nipple 1 G320 22-08 HKWS5 Steel Ball 5/16 JIS B1501 1 G330 22-08 1040324 Spring 1
Model/Kit
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F105
F110
F115
*F120
F125
F100
F100
F100
F100
F100
F205
F100
(BC)
(BB)
(BA)
(AC)
(AB)
(AA)
Parts Manual

Shaft

Shaft AA-BC

* Included in overhaul seal kit Q210
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Parts Manual
Shaft
Order code: all common parts
Item Date Begin Date End Part Number Part Name Qty. per
F105 11-34 F110 11-34 F115 11-34 F120 11-34 F125 11-34 F205 11-34
1
Date Begin for order code BB is 14-45
1
1
1
1
1
1
SP0984 Ball bearing 1 FBD025 Retaining ring 1 FBE052 Retaining ring 1 11082827 Lip seal 1 FBE052 Retaining ring 1 11050329 Needle bearing 1
AA parts
F100 11-34 11094869 Shaft, straight key (33mm) 1
AB parts
F100 11-34 11075897 Shaft, straight key (53mm) 1
Model/Kit
AC parts
F100 11-34 11094870 Shaft, 13 tooth spline 1
BA parts
F100 11-34 11095057 Shaft, straight key (33mm), auxiliary drive 1
BB parts
F100 14-45 11150105 Shaft, straight key (53mm), auxiliary drive 1
BC
F100 11-34 11096321 Shaft, 13 tooth spline, auxiliary drive 1
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F105
F110
F115
*F120
F125
F100
F205
F100
F100
F100
E103 680
(DD)
(DC)
(DB)
(DA)
Parts Manual
Shaft

Shaft DA-DD

* Included in overhaul seal kit Q210
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Parts Manual
Shaft
Order code: all common parts
Item Date Begin Date End Part Number Part Name Qty. per
F105 14-45 SP0984 Ball bearing 1 F110 14-45 FBD025 Retaining ring 1 F115 14-45 FBE052 Retaining ring 1 F120 14-45 11082827 Lip seal 1 F125 14-45 FBE052 Retaining ring 1 F205 14-45 11050329 Needle bearing 1
DA parts
F100 14-45 11154184 Shaft, straight key (33mm), auxiliary drive 1
DB parts
F100 14-45 11154183 Shaft, straight key (53mm), auxiliary drive 1
Model/Kit
DC parts
F100 14-45 11152845 Shaft, 13 tooth, auxiliary drive 1
DD parts
F100 14-45 11152846 Shaft, 20 tooth, auxiliary drive 1
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E103 250E
H150
H200
H100
H100
H150
H200
(2 & 3)
(D)
Parts Manual

Loop flushing

Loop Flushing 2-3 and D

* Included in overhaul seal kit Q210
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Parts Manual
Loop flushing
Order code: 2 parts
Item Date Begin Date End Part Number Part Name Qty. per
H100 11-34 11098179 Spool 1 H150 11-34 11097840 Spring 2 H200 11-34 1745296 Spring guide 2
3 parts
H100 15-36 11120528 Spool 1 H150 15-36 11097840 Spring 2 H200 15-36 1745296 Spring guide 2
D parts
H100 11-34 11098213 Spool, defeated 1
Model/Kit
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