Parts Manual Series 51 80cc Variable Displacement Motor
Contents
General Information
Order code
Cartridge flange
DIN flange
SAE flange
Maximum displacement
End cap
Threshold/range
Service parts identication ............................................................................................................................................. 5
Date code ..............................................................................................................................................................................6
Service bulletins..................................................................................................................................................................6
Procedure to identify a part ............................................................................................................................................6
Order code ............................................................................................................................................................................7
Common parts ................................................................................................................................................................8-9
Special hardware ......................................................................................................................................................... 8-11
Common parts ...........................................................................................................................................................12-13
Special hardware .......................................................................................................................................................12-13
Common parts ...........................................................................................................................................................14-15
Special hardware .......................................................................................................................................................14-17
Maximum displacement common parts ..........................................................................................................18-19
Maximum displacement ......................................................................................................................................... 18-19
Side ports ..................................................................................................................................................................... 22-27
Electric proportional (D7 and D8) ....................................................................................................................... 34-35
Electric 2-position (E1 and E2) .............................................................................................................................. 36-37
Electric proportional (EP, EQ, ER, and ES) ..........................................................................................................38-39
Electric 2-position (F1 and F2) .............................................................................................................................. 40-41
Hydraulic porportional with electric override (H1 and H2) ....................................................................... 42-43
Electric proportional w/pressure reducing (H3 and H4) ............................................................................. 44-45
Hydraulic proportional (HA, HB, HE and HP) ................................................................................................... 46-47
Hydraulic proportional (HS and HZ) ................................................................................................................... 48-49
Hydraulic porportional with electric override (J1 and J2) .......................................................................... 50-51
Hydraulic porportional with electric override (K1 and K2) ........................................................................54-55
Electric proportional (L1, L2, L3, L4 and L7) ..................................................................................................... 56-57
Electric 2-position (T1 and T2) .............................................................................................................................. 60-61
Electric 2-position with solenoid (T9) ................................................................................................................ 62-63
Electric 2-position (U1 and U2) .............................................................................................................................64-65
Electric proportional (Y7) ....................................................................................................................................... 64-65
2
AX00000076en-US • Rev 0403 • October 2017
Parts Manual Series 51 80cc Variable Displacement Motor
Control ramp ...............................................................................................................................................................78-79
Overhaul seal kit .............................................................................................................................................................. 98
SB-1993-006 (end cap gasket) .................................................................................................................................... 99
Parts Manual Series 51 80cc Variable Displacement Motor
General information
Service parts
indentification
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 Series 51 80cc variable
displacement motors.
The parts listed include all parts which may be used when performing either “Minor Repairs”,
“Major Repairs” or “Conversions” on the Series 51 80cc motors.
NameplateEach unit will have a nameplate axed to the
housing. The nameplate will include the following
information.
Model Code
The Danfoss model code completely denes the
specic unit and must be used when ordering parts
to service this product.
Model Number
The Danfoss model 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.
Model No./Ident No.
Model Code
Serial No.
51V080-R-C7-N-F1-
N-99-12-12345
Made in Germany
501277
A1-A-N-E2-NNN-
035-AA-10-03-13
The letter code indicates the location of original
manufacture (assembly). “N” indicates the unit was
originally assembled in Neumuenster, Germany.
The rst number (2 digits) indicates the year of
manufacture. (“01” would indicate the unit was
manufactured in 2001)
The second number (2 digits) indicates the calendar
week of manufacture.
The third number (5 digits) is a sequential number
used to identify a specic unit.
4
AX00000076en-US • Rev 0403 • October 2017
Parts Manual Series 51 80cc Variable Displacement Motor
General information
Date code
Service bulletinsA Service Bulletin Number (SB-_ _ _ _ - _ _ _) may follow the “Part Name” of the part you desire. You
Procedure to identify a partGeneral
The date code is dened 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 conguration for that item number.
You will see that there are dierent date codes for the dierent 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 L035.
Order Date Date
Code Item Begin End Part Number Part Name Usage
C L035 00-25 515752 Bearing housing (SB-2000-049) 1
L035 92-07 00-24 743831 Bearing housing 1
All units using this order code with a date code of 92-07 and up to and including 00-24, must use part
number “743831”. All units with a date code of 00-25 and newer must use part number “515752.”.
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 recieve them.
The modular design of L frame Reverse motors result in a simplied service parts list and part number
identication procedure.
The same item numbers are used for same part names on all units within a product type. (Example:
The lip seal - Item L40, has the same item number on all motors.)
A part number that has another number following it in parentheses is done to make this a world wide
manual. The rst number is sold in Germany. The number in parentheses is sold in the United States.
(Example: 664524 (9005110-9000), customers would order 9005110-9000 if ordering the part in the
United States.)
Example of a part identication
The nameplate on a Series 51 motor has an Order Code of 51V080 R C7 N F1 A1 A N E2 NNN 035 AA
10 03 13. Use the following procedures to determine the part number of the drive shaft used on this
motor.
1) Referring to the shaft module in the Order Code (see page 7), the shaft option for this motor is
identied by the code “C7”. (51V080 R C7 N F1 A1 A N E2 NNN 035 AA 10 03 13)
2) Referring to the Service Parts List, nd the shaft group. Next nd the order code that relates to this
unit, which is “C7”. The shaft is found to be item QL10 and part number 11100427 if a speed ring is not
required. The shaft is found to be item QL11 and part number 11100428 if a speed ring is required.
AX00000076en-US • Rev 0403 • October 2017
5
Parts Manual Series 51 80cc Variable Displacement Motor
Notes
6
AX00000076en-US • Rev 0403 • October 2017
Parts Manual Series 51 80cc Variable Displacement Motor
Pr
F
Fr
End cap
Shaf
Maximum displacemen
Se
Special hardwar
M
L
PC
VZ
Order code
GL FM NJSTWYPK
5 1
V0 8 0R
C 71A
F
N
1A
2
N
N N
N
0 3
5
A A1
0 31 1
0E
oduct
lange
ame size
t
Control
rvo pressure supply
Threshold/range
Control ramp
Orifice
t
e
inimum displacement
oop flushing
Charge relief
Threshold setting
OR setting
P100 536E
AX00000076en-US • Rev 0403 • October 2017
7
Parts Manual Series 51 80cc Variable Displacement Motor
L80
Variable Displacement Motor
*B80C
L70
Prior to
N-94-42
L035
*L50C
L80
*L40
L750
*QW30
L85
N-94-42 to
N-98-32
L95
L90
(ACA, ACB & ACE)
(ABA)
*L82
L81
L95
L85
N-09-51
& beyond
N-98-33 to
N-09-50
L81
L90
L035
L95
L70
L81
*QL81
*B80C
L035
*L40
L035
L70
L80
L70
*QL81
L81
B05
8
W30
W30
C10
B70
B50
Q020
QC05
* = included in base motor seal kit Q210
AX00000076en-US • Rev 0403 • October 2017
W10
L90
L85
B10
B71
E100 246E
Enlarged bold type item
numbers are recommended
part to stock for servicing.
Parts Manual Series 51 80cc Variable Displacement Motor
Variable Displacement Motor
Cartridge flange common parts
Order Date Date Qty. per
code Item begin end Part number Part name model/kit
A J05 92-07 507638 Spring 1
(2-5 bar)
B J05 92-07 722215 Spring 1
(6-12 bar)
C J05 92-07 722207 Spring 1
(13-30 bar)
D J05 92-07 722207 Spring 1
(20-30 bar)
E J01 92-07 729442 Spring 1
G J05 92-07 722207 Spring 1
(3-5 bar)
H J05 92-07 722207 Spring 1
(6-8 bar)
J J05 92-07 722215 Spring 1
(15-50 mA)
K J05 92-07 722207 Spring 1
(51-85 mA)
L J05 92-07 722215 Spring 1
(110-370 mA)
N No parts
(no adjustment)
P J05 95-24 722215 Spring 1
(no adjustment)
R J05 99-35 507638 Spring 1
(320 mA)
S J05 99-35 507638 Spring 1
(640 mA)
V J05 95-35 507638 Spring 1
(220 mA)
W J05 97-41 507638 Spring 1
(440 mA)
AX00000076en-US • Rev 0403 • October 2017
29
Parts Manual Series 51 80cc Variable Displacement Motor
Variable Displacement Motor
(10-99)
QK10
*K50
*K50
*K51
(E4, E6, F0, F3,
G0 & G3)
QK10
*K51
*K50
(A0, A3,B0 &
B3)
QK10
30
* = included in base motor seal kit Q210
AX00000076en-US • Rev 0403 • October 2017
E100 300E
Enlarged bold type item
numbers are recommended
part to stock for servicing.
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