Pump
Service Parts Manual
M25 - Axial Piston
Series 40
saue
Genuine Parts
Original
Ersatzteile
BLN-2-41693
September, 1996
CONTENTS
2
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
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 Pumps
BLN-2-41693
September, 1996
saue
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 pumps.
The parts listed include all parts which may be used when performing either "Minor Repairs", "Major Repairs", or
"Conversions" on the M25 pumps.
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
MPV025C B A A R A
R NN A A BLL DR A
FF A CNN
- Nameplate -
MPV025C B A A R A
R NN A A BLL DR A
FF A CNN
M25-2001
A – 92 – 26 – 12345
123456
N – 92 – 26 – 12345
Each pump 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
Pumps 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 Pumps
BLN-2-41693
September, 1996
saue
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
B
C01
96-21
→
4250102
Swashplate
1
"
92-07
→
96-20
4510126
Swashplate kit (SB-9610)
1
All units using this order code with a date code of 92-07 and up to and including 96-20 must use part number
“4510126”. All units with a date code of 96-21 and up must use part number “4250102”.
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 pumps.)
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 pump has an Order Code of MPV025C B A A R A R NN A A BLL DR A FF A CNN. Use
the following procedures to determine the part number of the shaft used on this pump.
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 “A” (MPV025C B A A R A R NN A A BLL DR A FF A CNN)
2) Referring to the Service Parts List, find the shaft group. Next find the order code that relates to this unit, which
is “A”. The shaft is found to be item E01A and part number 4250001.
CONTENTS
5
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
Order Code
M P V
5
0 2
C
B
A
A
R
A
R
N N
A
A
L
B L
D R
A
F F
A
C N N
C
D
E
F
G
H
J
K
L
M
N
P
R
S
T
Product
Displacement
Type
C: Swashplate
D: Seal Group
E: Shaft
F: Rotation
G: Charge Pump Displacement
H: Charge Pressure Relief Valve Setting
J: Filtration
K: Displacement
L: Bypass Valve
M: System Pressure Protection
N: Control
P: Control Handle Position
R: Control Orifice
S: Auxiliary Mounting Flange
T: Special Hardware
CONTENTS
6
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
Enlarged Bold type item numbers
are recommended parts to be
stocked for servicing
Swashplate and covers
shown controlled on right.
C01
B21
B32
B36
B22
B25
B25
B26
B28
F02
F01
N09
N07
N10
N06
B51
N05
C02
N07
N08
C02
N05
B01
N09
N07
N10
B51
C02
N10
N10
N06
N07
N08
C02
CONTENTS
7
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
Order
Date Code
Qty. per
Code
Item
Begin
→
End
Part Number
Description
Model/Kit
B01
92-07
→
4250035
Housing
1
B21
92-07
→
3103218
Thrust plate
1
B22
92-07
→
4250062
Cylinder block kit (SB-9410)
1
B25
92-07
→
5000073 (9009625-0106)
Washer
2
B26
92-07
→
3103199
Cylinder block spring
1
B28
92-07
→
9006250-0131
Retaining ring
1
B32
92-07
→
4510030
Piston assembly (SB-9410)
9
B36
92-07
→
3103197
Slipper retainer
1
B51
92-07
→
326231 (9008000-0117)
Lip seal
1
F02
92-07
→
016220 (9004800-1908)
Pin
1
N07
92-07
→
5000096 (9004300-1460)
O-ring
2
N08
92-07
→
4250027
Trunnion cover
1
N09
92-07
→
4250025
Trunnion cover
1
N10
92-07
→
5000039 (9007276-0135)
Screw
8
Swashplate
B
C01
96-21
→
4250102
Swashplate
1
"
92-07
→
96-20
4510126
Swashplate (SB-9610)
1
C02
96-21
→
4800470
Tapered roller bearing
2
"
92-07
→
96-20
508996 (9001415-0006)
Tapered roller bearing (SB-9610)
2
N05
92-07
→
96-20
4510026
Trunnion shim kit (SB-9610)
2
N06
92-07
→
96-20
4250043
Spacer (SB-9610)
2
Rotation
L
F01
92-07
→
4250044
Valve plate, LH
1
R
F01
92-07
→
4250031
Valve plate, RH
1
W
F01
92-07
→
4250064
Valve plate, RH quiet
1
Y
F01
92-07
→
4250076
Valve plate, LH quiet
1
Control
DL
Controlled on Left side
DR
Controlled on Right side
Bold Items indicate recommended parts to be stocked for servicing
M25 Variable Displacement Pump
CONTENTS
8
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
E07
B02
E04
E05
E06
E08
E01A
B45
B45A
E01Y
E02Y
B45
B45A
Enlarged Bold type item numbers
are recommended parts to be
stocked for servicing
CONTENTS
9
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
Order
Date Code
Qty. per
Code
Item
Begin
→
End
Part Number
Description
Model/Kit
B45
92-07
→
001537 (9005100-8700)
Plug
2
B45A
92-07
→
001149 (9004201-6200)
O-ring
2
E04
92-07
→
374447 (9001310-0008)
Ball bearing
1
E05
92-07
→
5000095 (9006300-0094)
Retaining ring
1
E06
92-07
→
505536 (9004100-0350)
O-ring
1
E07
92-07
→
4250002
Seal carrier
1
E08
92-07
→
5000097 (9006200-0256)
Retaining ring
1
Seal Group
A
B02
92-07
→
5000093 (9008000-0132)
Lip seal
1
Shaft
A
E01A
92-07
→
4250001
Shaft, 13 tooth spline
1
Y
E01Y
92-07
→
4250013
Shaft, straight keyed
1
E02Y
92-07
→
5000158 (9003261-2524)
Key
1
Bold Items indicate recommended parts to be stocked for servicing
M25 Variable Displacement Pump
CONTENTS
10
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
Enlarged Bold type item numbers
are recommended parts to be
stocked for servicing
B43
B43A
B43
B43A
H06
H07
H08
H01
H14
B43
B43A
M023
M20
M022
M20
M023
M022
M023
M10
M022
M023
M10
M022
CONTENTS
11
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
Order
Date Code
Qty. per
Code
Item
Begin
→
End
Part Number
Description
Model/Kit
B43
92-07
→
001511 (9005100-4400)
Plug
3
B43A
92-07
→
001123 (9004201-2500)
O-ring
3
H01
92-35
→
4800308
Plug assembly
1
H06
92-35
→
4510027
Shim kit
1
H08
92-35
→
4800134
Charge relief poppet
1
H14
92-35
→
001149 (9004201-6200)
O-ring
1
M022
92-07
→
001131 (9004201-5000)
O-ring
2
M023
92-07
→
504080 (9004100-2110)
O-ring
2
Charge Relief Valve Setting
E
H07
92-35
→
4800176
Spring - 11 bar/160 psi
1
F
H07
92-35
→
4800149
Spring - 7.5 bar/110 psi
1
G
H07
92-35
→
4800176
Spring - 14 bar/200 psi
1
M
H07
92-35
→
4800176
Spring - 28.3 bar/410 psi
1
N
H07
92-35
→
4800149
Spring - 9.0 bar/130 psi
1
R
H07
92-35
→
4800149
Spring - 6.2 bar/90 psi
1
System Pressure Protection (SB-9614)
AAA
M10
92-07
→
4350634
Check valve poppet assembly
1
M20
92-07
→
4350634
Check valve poppet assembly
1
BBB
M10
92-07
→
4350643
SCR valve, 175 bar/2538 psi
1
M20
92-07
→
4350643
SCR valve, 175 bar/2538 psi
1
BDD
M10
92-07
→
4350641
SCR valve, 210 bar/3045 psi
1
M20
92-07
→
4350641
SCR valve, 210 bar/3045 psi
1
BEE
M10
92-07
→
4350640
SCR valve, 230 bar/3335 psi
1
M20
92-07
→
4350640
SCR valve, 230 bar/3335 psi
1
BFF
M10
92-07
→
4350639
SCR valve, 250 bar/3625 psi
1
M20
92-07
→
4350639
SCR valve, 250 bar/3625 psi
1
BGF
M10
92-07
→
4350638
SCR valve, 280 bar/4060 psi
1
M20
92-07
→
4350639
SCR valve, 250 bar/3625 psi
1
BGG
M10
92-07
→
4350638
SCR valve, 280 bar/4060 psi
1
M20
92-07
→
4350638
SCR valve, 280 bar/4060 psi
1
BJJ
M10
92-07
→
4350636
SCR valve, 345 bar/5000 psi
1
M20
92-07
→
4350636
SCR valve, 345 bar/5000 psi
1
BLL
M10
92-07
→
4350646
SCR valve, 415 bar/6020 psi
1
M20
92-07
→
4350646
SCR valve, 415 bar/6020 psi
1
BMM
M10
92-07
→
4350635
SCR valve, 140 bar/2030 psi
1
M20
92-07
→
4350635
SCR valve, 140 bar/2030 psi
1
Bold Items indicate recommended parts to be stocked for servicing
M25 Variable Displacement Pump
CONTENTS
12
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
Enlarged Bold type item numbers
are recommended parts to be
stocked for servicing
B40
B40
B53
B50
B37
B38
B52
B50
J01
S13
S14
S15
S16
S12
CONTENTS
13
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
Order
Date Code
Qty. per
Code
Item
Begin
→
End
Part Number
Description
Model/Kit
B37
92-07
→
4250003
End cap gasket
1
B38
92-07
→
5000046
Needle bearing
1
B40
92-07
→
001289 (9004800-3708)
Pin
2
B50
92-07
→
9007200-4448
Screw
4
B52
92-07
→
002337 (9009611-4778)
Washer
3
B53
92-07
→
9800999
Lifting bracket
1
S14
92-07
→
4800482
'A' pad seal
1
S15
92-07
→
4460586
Cover plate
1
S16
92-07
→
049874 (9007200-3716)
Screw
2
Control Handle Position
A
Not Applicable
Control Orifice
FF
None
Auxiliary Mounting Flange
A
S12
92-07
→
509149 (9004700-1222)
Pin
1
S13
92-07
→
4250060
Coupling, 9 tooth
1
D
S13
92-07
→
4250056
Coupling, 11 tooth
1
Special Hardware
CNN
J01
92-07
→
96-20
4250085
End cap
1
NNN
J01
96-20
→
4250085
End cap
1
Overhaul Seal Kit
92-07
→
45100151
Overhaul seal kit
1
B02
92-07
→
5000093 (9008000-0132)
Lip seal
1
B37
92-07
→
4250003
End cap gasket
1
B43A
92-07
→
001123 (9004201-2500)
O-ring
3
B45A
92-07
→
001149 (9004201-6200)
O-ring
2
B51
92-07
→
326231 (9008000-0117)
Lip seal
1
E06
92-07
→
505536 (9004100-0350)
O-ring
1
H14
92-07
→
001149 (9004201-6200)
O-ring
1
M022
92-07
→
001131 (9004201-5000)
O-ring
2
M023
92-07
→
504080 (9004100-2110)
O-ring
2
N07
92-07
→
5000096 (9004300-1460)
O-ring
2
S14
92-07
→
4800482
'A' pad seal
1
Bold Items indicate recommended parts to be stocked for servicing
M25 Variable Displacement Pump
CONTENTS
14
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
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
15
Series 40
M25 Pumps
BLN-2-41693
September, 1996
saue
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
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
saue
Genuine Parts
Original
Ersatzteile
saue
BLN-2-41693 • 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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