Service parts identification........................................................................................................................................................... 4
Date code............................................................................................................................................................................................ 5
About service bulletins...................................................................................................................................................................5
Procedure to identify a part..........................................................................................................................................................5
Regional part numbers............................................................................................................................................................. 5
Order code.......................................................................................................................................................................................... 7
Control Arm........................................................................................................................................................................................9
Neutral assist mechanism
AN (Detent).......................................................................................................................................................................................10
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 E, F and G..............................................................................................................................................................40
System Pressure Protection, 00N, 14A-30N..........................................................................................................................44
System Pressure Protection 32A-34N, 00N, 14A-25N....................................................................................................... 46
System Pressure Protection 28A-34N.....................................................................................................................................48
DDC20 Overhaul Seal Kit.............................................................................................................................................................54
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.
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 CodeItemDate BeginDate EndPart NumberPart NameQty. per
80G3089-178000243End cap gasket 1
G3089-168000151End 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.