Fixed Displacement Motor
Service Parts Manual
M25 - Axial Piston
Series 40
saue
Genuine Parts
Original
Ersatzteile
BLN-2-41692
September, 1996
CONTENTS
2
M25 Motors
BLN-2-41692
September, 1996
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Genuine Parts
Original
Ersatzteile
Contents
Copyright 1996 Sauer-Sundstrand. All rights reserved.
Contents subject to change. Information contained herein should be confirmed before placing orders.
Printed in U.S.A.
CONTENTS
3
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Service Parts Identification
The following information and procedure is used to identify the module group, item number, manufactured date,
part number, and part name of the parts included in the Series 40 M25 motors.
The parts listed include all parts which may be used when performing either "Minor Repairs", "Major Repairs", or
"Conversions" on the M25 motors.
Ames, Iowa, U.S.A. Neumünster, Germany
saue
Model Code Typ
Serial No. Fabr Nr
MADE IN GERMANY
Model No. Ident Nr
Ames, Iowa, U.S.A. Neumünster, Germany
saue
Model Code Typ
Serial No. Fabr Nr
MADE IN U.S.A.
Model No. Ident Nr
MMF025C A E
G A C NNN
- Nameplate -
MMF025C A E
G A C NNN
4253001
A – 92 – 26 – 12345
123456
N – 92 – 26 – 12345
Each motor will have a nameplate affixed to the housing. The
name plate will include the following information.
Model Code
The Sauer-Sundstrand model code completely defines the
specific unit and must be used when ordering the complete unit
for the first time or for ordering parts to service the product.
Model Number
The Sauer-Sundstrand model number is used by the factory in
manufacturing. On repeat orders, a complete unit can also be
ordered by the model mumber.
Serial Number
The Sauer-Sundstrand serial number is used to identify the
manufacturing location, manufacturing date and the unit se-
quence in the build. The serial number is also used to identify
the unit's warranty time period.
Identification Number
Motors manufactured in Germany will have an identification
number instead of a model number.
The letter code indicates the location of original manufacture
(assembly). "A" indicates the unit was originally assembled
in Ames, Iowa, USA. "N" indicates the unit was originally
assembled in Neumünster, Germany.
The first number (2 digits) indicates the year of manufacture.
("92" would indicate the unit was manufactured in 1992)
The second number (2 digits) indicates the calender week of
manufacture.
The third number (5 digits) is a sequential number used to
identify a specific unit.
CONTENTS
4
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Genuine Parts
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Date Code
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 via the nameplate to
determine which service part number you need to order.
EXAMPLE: The service part desired is ItemC01.
Order
Date Code
Qty. per
Code
Item
Begin
→
End
Part Number
Description
Model/Kit
E
D01
93-07
→
4250078
Shaft, 13 tooth spline
1
All units using this order code with a date code of 93-07 and beyond use part number “4250078”.
Service Bulletins
A Service Bulletin Number (SB- _ _ _ _) may follow the “Description” of the part you desire. You must read that
Service Bulletin prior to ordering that part. A copy of each of 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 Given Part/Part Number
General
The modular design of M25 units results in a simplified Service Parts List and Part Identification Procedure.
The same item numbers are used for same part description on all units within a product type. (Example: The
cylinder block kit - Item Number B22 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 Service
Parts Manual. The first number is sold in Germany. The number in parentheses is sold in the United States.
(Example: 5000093 (9008000-0132), Customers would order 9008000-0132 if ordering the part in the United
States.)
Example of a Part Identification
The nameplate on an M25 motor has an Order Code of MMF025C A E G A C NNN. Use the following procedures
to determine the part number of the shaft used on this motor.
1) Referring to the input shaft module, in the Order Code (see page 5), the input shaft option for this unit is
identified by the code “E” (MMF025C A E G A C NNN)
2) Referring to the Service Parts List, find the shaft group. Next find the order code that relates to this unit, which
is “E”. The shaft is found to be item D01 and part number 4250078.
CONTENTS
5
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Order Code
M M F
5
0 2
C
A
E
G
A
C
N
N N
C
D
E
F
G
M
Product
Displacement
Type
C: Seal Group
D: Shaft
E: End Cap
F: Cylinder Block
G: Housing
T: Special Harware
CONTENTS
6
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Genuine Parts
Original
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Enlarged Bold type item numbers
are recommended parts to be
stocked for servicing
B40
B52
B28
B25
(B25)
B26
B36
B32
B21
B22
D01
D04
D05
D06
B02
D07
D08
B45
B45A
B45
B45A
CONTENTS
7
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Genuine Parts
Original
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Order
Date Code
Qty. per
Code
Item
Begin
→
End
Part Number
Description
Model/Kit
B21
93-07
→
3103218
Thrust plate
1
B40
93-07
→
688606 (9004800-0100)
Pin
2
B45
93-07
→
681296 (9005110-7500)
Plug
2
B45A
93-07
→
001131 (9004201-5000)
O-ring
2
B52
93-07
→
4250073
Valve plate
1
D04
93-07
→
374447 (9001310-0008)
Bearing
1
D05
93-07
→
5000095 (9006300-0094)
Retaining ring
1
D06
93-07
→
505536 (9004100-0350)
O-ring
1
D07
93-07
→
4250002
Seal carrier
1
D08
93-07
→
5000097 (9006200-0256)
Retaining ring
1
Seal Group
A
B02
93-07
→
5000093 (9008000-0132)
Lip seal
1
Shaft
E
D01
93-07
→
4250078
Shaft, 13 tooth spline
1
Cylinder Block Kit
A
B22
93-07
→
4250062
Cylinder block kit (SB-9410)
1
B25
93-07
→
5000073 (9009625-0106)
Washer
2
B26
93-07
→
3103199
Spring
1
B28
93-07
→
9006250-0131
Retaining ring
1
B32
93-07
→
4510030
Piston assembly (SB-9410)
9
B36
93-07
→
3103197
Slipper retainer
1
C
B22
93-07
→
4250097
Cylinder block kit w/speed ring
1
B25
93-07
→
5000073 (9009625-0106)
Washer
2
B26
93-07
→
3103199
Spring
1
B28
93-07
→
9006250-0131
Retaining ring
1
B32
93-07
→
4510030
Piston assembly (SB-9410)
9
B36
93-07
→
3103197
Slipper retainer
1
Bold Items indicate recommended parts to be stocked for servicing
M25 Fixed Displacement Motor
CONTENTS
8
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Genuine Parts
Original
Ersatzteile
Enlarged Bold type item numbers
are recommended parts to be
stocked for servicing
B41
E01
E10
E09
E07
E29
E06A
E06
E27
E26
E26A
E26A
E18
E18A
E18B
E16
E15
E11
E13
E11A
B47
B47A
B47
B47A
B37
B38
B41
E01
E26
B39
B39
CONTENTS
9
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Genuine Parts
Original
Ersatzteile
Order
Date Code
Qty. per
Code
Item
Begin
→
End
Part Number
Description
Model/Kit
B37
93-07
→
4250068
End cap gasket
1
B38
93-07
→
5000046
Needle bearing
1
B39
93-07
→
015701 (9004700-1910)
Pin
1
B41
93-07
→
5000091
Screw
4
B47
93-07
→
001511 (9005100-4400)
Plug
2
B47A
93-07
→
001123 (9004201-2500)
O-ring
2
End Cap Group
G
E01
93-07
→
4250067
End cap, w/o loop flushing
1
R
E01
93-07
→
4250079
End cap, w/loop flushing
1
E06
93-07
→
4800365
Plug
1
E06A
93-07
→
085043 (9004201-3700)
O-ring
1
E07
93-07
→
4800225
Spring
1
E09
93-07
→
8800551
Spring guide
1
E10
93-07
→
8800550
Shuttle spool
1
E11
93-07
→
4800280
Plug
1
E11A
93-07
→
015818 (9004201-3100)
O-ring
1
E13
93-07
→
9510447
Shim kit
1
E15
93-07
→
7668853
Spring
1
E16
93-07
→
4800397
Relief valve poppet
1
E18
93-07
→
4800365
Plug
1
E18A
93-07
→
000836 (9004100-0200)
O-ring
1
E18B
93-07
→
085043 (9004201-3700)
O-ring
1
E26
93-07
→
4800365
Plug
1
E26A
93-07
→
085043 (9004201-3700)
O-ring
1
E27
93-07
→
4800225
Spring
1
E29
93-07
→
8800551
Spring
1
S
E01
93-07
→
4250079
End cap, w/loop flushing
1
E06
93-07
→
4800365
Plug
1
E06A
93-07
→
085043 (9004201-3700)
O-ring
1
E07
93-07
→
4800225
Spring
1
E09
93-07
→
8800551
Spring guide
1
E10
93-07
→
8800550
Shuttle spool
1
E11
93-07
→
4800280
Plug
1
E11A
93-07
→
015818 (9004201-3100)
O-ring
1
E13
93-07
→
9510447
Shim kit
1
E15
93-07
→
7668853
Spring
1
E16
93-07
→
4800397
Relief valve poppet
1
E18
93-07
→
4800365
Plug
1
E18A
93-07
→
000836 (9004100-0200)
O-ring
1
E18B
93-07
→
085043 (9004201-3700)
O-ring
1
E26
93-07
→
4800362
Plug
1
E26A
93-07
→
085043 (9004201-3700)
O-ring
1
Bold Items indicate recommended parts to be stocked for servicing
M25 Fixed Displacement Motor
CONTENTS
10
Series 40
M25 Motors
BLN-2-41692
September, 1996
saue
Genuine Parts
Original
Ersatzteile
Enlarged Bold type item numbers
are recommended parts to be
stocked for servicing
B41
E01
E10
E06
E29
E27
E26
E26A
E18
E18A
E18B
E16
E15
E11
E13
E11A
B47
B47A
G01
G01
G02
G02A
G03
B37
B38
E06A
G04
G04A
B39
CONTENTS
11
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Genuine Parts
Original
Ersatzteile
Order
Date Code
Qty. per
Code
Item
Begin
→
End
Part Number
Description
Model/Kit
B37
93-07
→
4250068
End cap gasket
1
B38
93-07
→
5000046
Needle bearing
1
B39
93-07
→
015701 (9004700-1910)
Pin
1
B41
93-07
→
5000091
Screw
4
B47
93-07
→
001511 (9005100-4400)
Plug
2
B47A
93-07
→
001123 (9004201-2500)
O-ring
2
End Cap Group
T
E01
93-07
→
4250079
End cap, w/loop flushing
1
E06
93-07
→
4800362
Plug
1
E06A
93-07
→
085043 (9004201-3700)
O-ring
1
E10
93-07
→
8800550
Shuttle spool
1
E11
93-07
→
4800280
Plug
1
E11A
93-07
→
015818 (9004201-3100)
O-ring
1
E13
93-07
→
9510447
Shim kit
1
E15
93-07
→
7668853
Spring
1
E16
93-07
→
4800397
Relief valve poppet
1
E18
93-07
→
4800365
Plug
1
E18A
93-07
→
000836 (9004100-0200)
O-ring
1
E18B
93-07
→
085043 (9004201-3700)
O-ring
1
E26
93-07
→
4800365
Plug
1
E26A
93-07
→
085043 (9004201-3700)
O-ring
1
E27
93-07
→
4800225
Spring
1
E29
93-07
→
8800551
Spring
1
Housing Group
A
G01
95-34
→
4250096
Housing
1
G02
95-34
→
4800432
Speed sensor adapter assembly
1
G02A
95-34
→
001149 (9004201-6200)
O-ring
1
G03
95-34
→
8800884
Speed sensor
1
B
G01
96-17
→
4250096
Housing
1
G04
96-17
→
315325 (9005110-8700)
Plug
1
G04A
96-17
→
001149 (9004201-6200)
O-ring
1
C
G01
93-07
→
4250077
Housing, 20 cc
1
Overhaul Seal Kit
93-07
→
4510035
Overhaul seal kit
1
B02
93-07
→
5000093 (9008000-0132)
Lip seal
1
B37
93-07
→
4250068
End cap gasket
1
B45A
93-07
→
001131 (9004201-5000)
O-ring
2
D06
93-07
→
505536 (9004100-0350)
O-ring
1
E06A
93-07
→
085043 (9004201-3700)
O-ring
1
E11A
93-07
→
015818 (9004201-3100)
O-ring
1
E18A
93-07
→
000836 (9004100-0200)
O-ring
1
E18B
93-07
→
085043 (9004201-3700)
O-ring
1
E26A
93-07
→
085043 (9004201-3700)
O-ring
1
G02A
95-34
→
001149 (9004201-6200)
O-ring
1
G04A
96-17
→
001149 (9004201-6200)
O-ring
1
Bold Items indicate recommended parts to be stocked for servicing
M25 Fixed Displacement Motor
CONTENTS
12
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Genuine Parts
Original
Ersatzteile
Service Bulletin SB-9410
PRODUCTS AFFECTED:
SUBJECT:
DESCRIPTION:
All cylinder block kits used in the M25 product line will be commonized to a single part
number. A lapped slipper will now replace the non-lapped slipper on the piston as-
sembly.
Series 40 - M25 Variable Pumps, Tandem
Pumps, and Fixed Motors
Part Number Reduction
CONTENTS
13
Series 40
M25 Motors
BLN-2-41692
September, 1996
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Genuine Parts
Original
Ersatzteile
Service Bulletin SB-9410
DISTRIBUTION:
All Product Related Sauer-Sundstrand Distributors
All Product Related OEM's
All ASCs
Non-Restricted Distribution
PARTS DISPOSITION:
Not Applicable
Interchangeable
Non-Interchangeable
Use Parts in Stock
Scrap Used Parts
Return New Parts for Credit
Order Replacement Parts
Rework Parts in Stock
Revise Existing Part Orders
Scrap New Parts and Supply for Credit
X
X
X
X
MODELS AFFECTED:
PART NUMBERS AFFECTED:
SERIAL NUMBERS AFFECTED:
X
All M25-2xxx Pumps, M91-25xx Tandem Pumps, and M25-3xxx Fixed Motors.
94-22 and beyond
Old Cylinder
New Cylinder
Old Piston
New Piston
Block P/N
Block P/N
Assembly P/N
Assembly P/N
3103200
4250062
9510651
4510030
4250021
4250062
9510651
4510030
CONTENTS
SAUER-SUNDSTRAND Hydraulic Power Systems - Market Leaders Worldwide
SAUER-SUNDSTRAND specializes in integrating a full
range of system components to provide vehicle designers
with the most advanced total-design system.
SAUER-SUNDSTRAND is Your World Source for
Controlled Hydraulic Power Systems.
SAUER-SUNDSTRAND is a world leader in the design and
manufacture of Hydraulic Power Systems. Research and
development resources in both North America and Europe
enable SAUER-SUNDSTRAND to offer a wide range of
design solutions utilizing hydraulic power system
technology.
Worldwide Service Support
SAUER-SUNDSTRAND provides comprehensive worldwide service for its
products through an extensive network of Authorized Service Centers
strategically located in all parts of the world.
Look to SAUER-SUNDSTRAND for the best in WORLDWIDE SERVICE.
Genuine Service Parts
Gear Pumps and Motors
Open Circuit Axial Piston Pumps
Hydraulic Power Systems
Cartridge Motors/
Compact Wheel Drives
Heavy Duty Bent Axis
Variable Motors
Heavy Duty Axial Piston
Pumps and Motors
Hydrostatic Transmission
Packages
Medium Duty Axial Piston
Pumps and Motors
Microcontrollers and
Electrohydraulic Controls
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BLN-2-41692 • September, 1996
SAUER-SUNDSTRAND GMBH & CO.
Postfach 2460 • D-24531 Neumünster
Krokamp 35 • D-24539 Neumünster • Germany
Phone: (04321) 871-0 • Fax: (04321) 871122
SAUER-SUNDSTRAND COMPANY
2800 East 13th Street
Ames IA 50010 • U.S.A.
Phone: (515) 239-6000 • FAX: (515) 239-6318
CONTENTS
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