OMS Series 3
Orbital Motors
Repair Instruction
2
L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Table of Contens, Special Versions
Contents
© 2010 Sauer-Danfoss. All rights reserved.
Sauer-Danfoss accepts no responsibility for possible errors in catalogs, brochures and other printed material.
Sauer -Danfoss reserves the right to alter its products without prior notice. This also applies to products already
ordered provided that such alterations can be made without aecting agreed specications. All trademarks
in this material are properties of their respective owners. Sauer-Danfoss, the Sauer-Danfoss logotype, the
Sauer-Danfoss S-icon, PLUS+1™, What really matters is inside® and Know-How in Motion™ are trademarks of the
Sauer-Danfoss Group.
Frontpage: F300 083, Drawing 151-19
Special Versions ...............................................................................................................................................3
OMSW Series 3 with Brake Nose ...............................................................................................................3
Exploded View OMS Series 3 ..................................................................................................................... 4
Spare Parts List ................................................................................................................................................6
Special Tools ..................................................................................................................................................... 9
Dismantling ....................................................................................................................................................10
Tacho Connection ........................................................................................................................................11
Assembling .....................................................................................................................................................12
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Contents
The list of spare parts cannot be used when ordering parts for special OMS versions.
In this respect, please contact the sales organisation for Sauer-Danfoss.
Special Versions
OMSW Series 3 with
Brake Nose
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Exploded View OMS Series 3
Exploded View OMS
Series 3
Tightening torque: t
Item 13, with item 14: 30 - 60 N.m [ 270 - 530 lbf.in]
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
151-2090.11
Exploded View OMS
Series 3
Tightening torque: t
Item 34: 75 - 80 N.m [660 - 705 lbf.in]
Item 51: 4 - 6 N.m [35 - 55 lbf.in]
Exploded View OMS Series 3
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Spare Parts List
Spare Parts List
Item Spare parts Number per motor
Code No.
1 Dust seal ring
(p.t.o. shaft)
35 • 42 • 3.5 mm [1.38 • 1.65 • 0.14 in] 633B3198 1
40 • 47 • 4.0 mm [1.57 • 1.85 • 0.16 in] 633B3356 1
2 Bearing housing
OMS Standard ange
OMS Standard ange and P.t.o. shaft
OMS Special ange
OMS A - 2 ange
OMS Magneto ange
OMS SAE B ange
OMSW Metric standard
OMSW SAE standard
OMSW with brake nose
151F1534
151F1549
151F1536
151F1685
151F1858
151F1864
151F1535
151F1620
151F1852
1
1
1
1
1
1
1
1
1
2a Mounting ange 151F1827 1
3 Shaft seal
P.t.o. shaft
35 • 52 • 5 mm [1.38 • 2,05 • 0.20 in] NBR
35 • 52 • 5 mm [1.38 • 2,05 • 0.20 in] FPM
40 • 60 • 6 mm [1.57 • 2.36 • 0.24 in] NBR
633B3197
633B3196
633B3355
1
1
1
4 Parallel key Metric:
Metric:
SAE:
SAE:
A 10 • 8 • 45 mm for 32 mm cyl. shaft
B 6 • 6 • 20 mm for tap. shaft
5/16 • 5/16 • 1 ¼ in for 1 ¼ in cyl.
and tapered shaft
¼ • ¼ • 1 ¼ in BS 46 for 1 in cylindrical shaft
682L8019
682L8021
151-4109
682L8036
1
1
1
1
5 Cylindrical shaft Metric:
SAE:
SAE:
Ø32 mm with bearings incl. item 4
Ø1 ¼ in with bearings incl. item 4
Ø1 in with bearings incl. item 4
151F0112
151F0118
151F0127
1
1
1
6 Splined shaft Metric:
SAE:
SAE:
SAE:
1 ¼ in with bearings
1 ¼ in with bearings
1 in with bearings
0.875 in with bearings
151F0113
151F0119
151F0126
151F0138
1
1
1
1
7 P.t.o. shaft incl. bearing, DIN 9611 151F0116 1
8 Washer metric version only 20.5 • 44 • 4 mm 684X2530 1
9 Castellated nut Metric:
SAE:
M20 • 1.5 mm
1 - 20 UNEF
681X8235
151-4154
1
1
10 Tapered shaft Metric:
SAE:
35 mm with bearings incl. item 4, (8) and 9
1 ¼ in with bearings incl. item 4 and 9
151F0114
151F0115
1
1
11 Conical seal ring 633B9023 1
12 O-ring 70 • 2 mm [2.75 • 0.08] NBR 633B1379 1
13 Drain plug Metric:
SAE:
G ¼
7/16 - 20 UNF
151-1524
151-5439
1
1
14 Washer 684X2120 1
15 Intermediate plate Metric:
SAE:
151F1811
151F1812
1
1
16 Mounting ange for OMSS
Metric: 151F1817 1
17 O-ring for OMSS 100 • 3 mm [3.94 • 0.12 in] NBR 633B1486 1
18 Cardan shaft
OMS/OMSW/OMSS 80
OMS/OMSW/OMSS 100
OMS/OMSW/OMSS 125
OMS/OMSW/OMSS 160
OMS/OMSW/OMSS 200
OMS/OMSW/OMSS 250
OMS/OMSW/OMSS 315
OMS/OMSW/OMSS 400
OMS/OMSW/OMSS 500
l = 70 mm [2.75 in]
l = 73 mm [2.87 in]
l = 78 mm [3.07 in]
l = 84 mm [3.31 in]
l = 91 mm [3.58 in]
l = 99.5 mm [3.92 in]
l = 111 mm [4.37 in]
l = 124.5 mm [4.90 in]
l = 120.5 mm [4.74 in]
151F1461
151F1462
151F1463
151F1464
151F1769
151F1770
151F1829
151F1830
151F1861
1
1
1
1
1
1
1
1
1
19 O-ring 82.5 • 2 mm [3.25 • 0.08 in] NBR 633B1431 3
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Item Spare parts Number per motor
Code No.
Spare Parts List
Spare Parts List
** OMSW wih brake nose and
drain port. Do not have
check valve
20 Gearwheel set
OMS/OMSW/OMSS 80
OMS/OMSW/OMSS 100
OMS/OMSW/OMSS 125
OMS/OMSW/OMSS 160
OMS/OMSW/OMSS 200
OMS/OMSW/OMSS 250
OMS/OMSW/OMSS 315
OMS/OMSW/OMSS 400
OMS/OMSW/OMSS 500
w = 14 mm [0.55 in]
w = 17 mm [0.67 in]
w = 22 mm [0.87 in]
w = 28 mm [1.10 in]
w = 35 mm [1.38 in]
w = 44 mm [1.73 in]
w = 55 mm [2.16in]
w = 68.4 mm [2.69 in]
w = 68.4 mm [2.69 in]
151F1081
151F1082
151F1083
151F1084
151F1085
151F1086
151F1087
151F1088
151F1089
1
1
1
1
1
1
1
1
1
22 Valve drive OMS 80 - 400
OMS 500
151F1448
151F1862
1
1
23 Channel plate 151F1821 1
24 Stop ring (OMSS 200, 250, 315, 400 and 500 only) 151F1542 1
25 Disc valve 151F1022 1
26 Balance plate 151F1738 1
27 Guide pin ∅ 5 mm [0.20 in], l = 14 mm [0.55 in] ISO 8752 682L9105 1
28 O-ring 45 • 2 mm [1.77 • 0.08] NBR
45 • 2 mm [1.77 • 0.08] FPM
633B1429
633B1455
1
1
29 O-ring 24 • 2 mm [0.94 • 0.08] NBR
24 • 2 mm [0.94 • 0.08] FPM
633B1428
633B1453
1
1
30 Spacer 151F1449 1
31 Spring washer 684X0097 1
32a
32a
32b
32c
32d
Valve housing sideport
endport
without drain port Metric:
without drain port SAE
with drain port SAE
without drain port SAE
with drain port SAE
151F1801
151F1805
151F1807
151F1855
151F1856
1
1
1
1
1
33 Seal plug 633X0017 2
34 Screw M10:
OMS/OMSW 80
OMS/OMSW 100, 125
OMS/OMSW 160, 200
OMS/OMSW 250
OMS/OMSW 315
OMS/OMSW 400, 500
l = 120 mm [4.72 in]
l = 130 mm [5.12 in]
l = 140 mm [5.51 in]
l = 150 mm [5.91 in]
l = 160 mm [6.30 in]
l = 180 mm [7.09 in]
681X1349
681X1350
681X1352
681X1353
681X1356
681X0038
4
4
4
4
4
4
OMSS 80, 100
OMSS 125, 160
OMSS 200
OMSS 250
OMSS 315
OMSS 400, 500
l = 100 mm [3.94 in]
l = 110 mm [4.33 in]
l = 120 mm [4.72 in]
l = 130 mm [5.12 in]
l = 140 mm [5.52 in]
l = 150 mm [5.91 in]
681X1347
681X1348
681X1349
681X1350
681X1352
681X1353
4
4
4
4
4
4
35 Check valve ball ** ∅3/16 in 689X1005 2
43 Tacho valve housing, complete 151F0137 1
44 Tacho connection, complete 151F1031 1
45 Tacho valve drive + guide pin 151F1032 1
46 Spacer ring 151F1502 1
47 Tacho valve housing 151F1802 1
48 O-ring 40 • 2 mm [1.57 • 0.08 in] 633B1378 1
49 Bearing housing 5.6 • 8.5 • 1 mm [0.22 • 0.33 • 0.04 in] 151F1499 1
50 Washer 684X2012 4
51 Screw M5; l = 15 mm [0.59 in] 681X1880 4
52 Tacho drive shaft 151F1500 1
53 Locking ring UR 6 • 0.7 mm [0.24 • 0.03 in] DIN 6799 682L4922 2
54 Bearing 8 • 22 • 7 mm [0.31 • 0.87 • 0.28 in] 981X1020 1
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
NBR: Buna N, Perbunan (ISO1629)
FPM: Viton (ISO 1629)
Spare Parts List
Item Spare parts Number per motor
Code No.
Spare Parts List
55 Shaft seal 633B3175 1
56 Locking ring N 22 • 1 mm [0.87 • 0.04 in] DIN 472 682L4008 1
A Set of seals NBR OMS, OMSW item 1, 3, 11, 12, 19, 28 and 29
OMS (p.t.o.) item 1, 3, 11, 12, 19, 28 and 29
151F0111
151F0117
1
1
B Set of seals NBR OMS, OMSW, OMSS item 11, 17, 19, 28 and 29 151F0103 1
C Set of seals FPM OMS, OMSW, OMSS item 1, 3, 28 and 29 151F0109 1
D Set of seals NBR OMSS item 11 and 17 151F1033 1
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Special Tools
Special Tools
A. Main holding tool SJ 151-9000-1
B: Holding tool for OMSS SJ 151F9000-1
C : Holding tool for OMSW SJ 151B9000-1
D: Mandrel for tting shaft seal SJ 151F9000-7
E.: Mandrel for tting PTO shaft seal SJ 151F9000-8
F : Holding tool for OMSW with brake nose SJ
151F9000-10
G: Holding tool for OMS SAE B - ange SJ
151F9000-11
Service tool drawing can be ordered from Sauer-Danfoss
A
C
F
G
B
D
E
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Dismantling
Dismantling
Item Part to remove Comments
4 Parallel key Cylindrical or tapered shafts
11* Conical seal ring
13, 14 Drain plug and washer
33 Seal plugs (2o ) Place the motor in holding tool.
34 Screw (4 o ) Use 17 mm socket spanner.
32 Valve housing Lift o carefully as a unit, holding your ngers under
the channel plate (Item no. 23).
23 Channel plate
19 O-ring
37 Ball (2 o )
24 Stop ring Only on OMSS 200, 250, 400 and 500
25 Disc valve
30 Spacer
26 Balance plate Fill in oil into the spacer hole and use the ø14.25 mm
[0.56 in] mandrel as a piston to press up the balance
plate
27 Guide pin
28 O-ring
29 O-ring
31 Spring washer
22 Valve drive
20 Gearwheel set Hold ngers under the gearwheel set to prevent the
parts from dropping out
19 O-ring
18 Cardan shaft
15 Intermediate plate
11 Conical seal ring Not on OMSS, is already removed
12 O-ring
5, 6,
7, 10**)
Shaft incl. bearings Turn the bearing housing. Press out the shaft/bearing
assembly using a hydraulic press (pressing Force max.
2500 N [550 lbf])
Shaft/bearing assembly should not be dismantled.
1**) Dust seal ring Item no. 1 and 3 to be knocked out by means of the
special mandrel (“D” on page 9)
3 **) Shaft seal
* OMSS only
**) OMSS except
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Tacho Connection
Dismantling
Item Part to remove Comments
51 Screw (4 o )
44 Tacho connection Remove from tacho valve housing
48 O-ring
46 Spacer ring
56 Retaining ring Loosen tacho shaft package (by tapping lightly at the
end of the shaft) and extract the package from
tacho housing.
55 Shaft seal
53 Retaining ring (2 o )
54 Bearing
After dismantling, clean all parts in low aromatic kerosene.
Examine the parts and exchange them if necessary.
Immidiately before assembly, lubricate each part with hydraulic oil and grease rubber
parts with vaseline.
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Assembling
Assembling
Item Part to assemble Comments
3 *) Shaft seal Knock into position in the bearing housing, using the
assembly mandrel. Grease lip with vaseline.
1 *) Dust seal ring Use assembly mandrel and plastic hammer. Grease lip
with vaseline.
5, 6, 7,
10 *)
Shaft incl. bearings Use the hydraulic press. (max. 2500 N [550 lbf])
Always press on the bearing outer ring.
15, 12, 11 Intermediate plate, O-ring, conical seal
ring
Screw the guide bolts into the bearing housing.
Fit the O-ring into the bearing housing. Fit the conical
seal ring (biggest diameter facing the intermediate
plate) int the recess in the intermediate plate. Place
the intermediate plate in position on the bearing
housing with the conical seal ring downwards.
18 Cardan shaft Guide the cardan shaft down into the output shaft so
that the splines engage.
19 O-ring Grease with vaseline.
20, 21 Gearwheel set Hold ngers under the gearwheel set to prevent
parts falling out. Carefully lay the gearwheel set on
the intermediate plate so that the O-ring groove is
upwards. The through-hole (6 mm [0.24 in]) must line
up with the hole in the intermediate plate. Mark the
wheel of the gearwheel set at the point where the
bottom of an internal tooth is opposite the bottom of
an external tooth (see drawing).
22 Valve drive Mark the tip of a spline tooth on the end of the valve
drive with the widest splines. Line up mark on rotor
and valve drive. The end with the widest splines must
point upwards.
Applies to motors with tacho connection:
Pin on valve drive must point upwards.
19 O-ring Grease with vaseline. Mount in the gearwheel and
channel plate grove
m
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Assembling
Assembling
Assembling of Tacho
Connection
The tacho connection must be reassembled in reverse order in relation to the procedure
described under “disassembling the tache connection”.
4 screws (pos. 51) to be tightened to 4 - 6 N.m [35.5 - 53 lbf.in].
Item Part to assemble Comments
23 Channel plate Fit the channel plate so that the O-ring groove is
upwards and the check valve holes line up with the
through-hole in the gearwheel set.
35 Ball (2 o )
25 Disc valve Align mark on valve drive with a hole in the outer rim.
(A on drawing).
Turn disc valve counter clockwise until splines in the
two parts engage.
31 Spring washer Place into valve housing
28, 29 O-ring Fit the two O-rings (greased with vaseline) in the
balance plate grooves.
27 Guide pin Mount in valve housing
26 Balance plate Mount in valve housing
30 Spacer Grease with vaseline to prevent the spacer from
dropping out
32 Valve housing Mount unit on the rest of the motor. Ports should face
in the same direction as the drain port.
34 Screw (4 o )
Lubricate threads and cross tighten screws to 75 80 N.m [660 - 705 lbf.in].
35 Ball (2 o ) Series 2 only
36 Spring (2 o ) Series 2 only
37 Washer (2 o) Series 2 only
38 Plug (2 o ) Series 2 only
Tighten to 10 - 15 N.m [90 - 130 lbf.in]
4 Parallel key Secure with plastic ring or tape
13 Drain plug and washer Fill motor with oil before plugging.
Tighten to 30 - 60 N.m [270 - 530 lbf.in].
11*) Conical seal ring Grease with vaseline to keep in place
33 Seal plug (2 o )
*) OMSS only
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L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Notes
15
L1012850 • Rev AB • Sep 2010
OMS/OMSW Orbital Motor
Repair Instruction
Notes
Local address:
Sauer-Danfoss GmbH & Co. OHG
Postfach 2460, D-24531 Neumünster
Krokamp 35, D-24539 Neumünster, Germany
Phone: +49 4321 871 0
Fax: +49 4321 871 122
Sauer-Danfoss ApS
DK-6430 Nordborg, Denmark
Phone: +45 7488 4444
Fax: +45 7488 4400
Sauer-Danfoss is a global manufacturer and supplier of highquality hydraulic and electronic components. We specialize in
providing state-of-the-art technology and solutions that excel in
the harsh operating conditions of the mobile o -highway market.
Building on our extensive applications expertise, we work closely
with our customers to ensure exceptional performance for a broad
range of o -highway vehicles.
We help OEMs around the world speed up system development,
reduce costs and bring vehicles to market faster.
Sauer-Danfoss – Your Strongest Partner in Mobile Hydraulics.
Go to www.sauer-danfoss.com for further product information.
Wherever o -highway vehicles are at work, so is Sauer-Danfoss.
We o er expert worldwide support for our customers, ensuring
the best possible solutions for outstanding performance. And with
an extensive network of Global Service Partners, we also provide
comprehensive global service for all of our components.
Please contact the Sauer-Danfoss representative nearest you.
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L1012850 • Rev AB • Sep 2010
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