MAKING MODERN LIVING POSSIBLE
Service Manual
Orbital Motor
LSHT Motors with TachoConnection
powersolutions.danfoss.com
Service Manual LSHT Motors with Tacho-Connection
Revision History Table of Revisions
Date Changed Rev
Mar 2014 Converted to Danfoss layout - DITA CMS BA
Apr 2008 First edition AA
2 11045212 • Rev BA • Mar 2014
Service Manual LSHT Motors with Tacho-Connection
Contents
Safety Precautions
Safety Precautions............................................................................................................................................................................4
Introduction
Convert Standard OMS/T/V-motors into motors with Tacho-Connection..................................................................5
Code Numbers...................................................................................................................................................................................5
Cross section view............................................................................................................................................................................5
Symbols Used in Danfoss Literature..........................................................................................................................................5
Disassembly of OMS/T/V – End Cover
Disassembly of OMS/T/V – End Cover.......................................................................................................................................6
Assembly of OMS/T/V-End Cover with Tacho-Connection
OMS....................................................................................................................................................................................................... 7
OMT/OMV............................................................................................................................................................................................7
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Service Manual
Safety Precautions
Safety Precautions
LSHT Motors with Tacho-Connection
Always consider safety precautions before beginning a service procedure. Protect yourself and others
from injury. Take the following general precautions whenever servicing a hydraulic system.
Warning
Unintended Machine Movement
Unintended movement of the machine or mechanism may cause injury to the technican or bystanders.
To prevent uintended movement, secure the machine or disable / disconnect the mechanism while
servicing.
Warning
Flammable Cleaning Solvents
Some cleaning solvents are flammable. To eliminate the riskof fire, do not use cleaning solvents in an area
where a source of ignition may be present.
Warning
Fluid under Pressure
Escaping hydraulic fluid under pressure can have sufficient force to penetrate your skin causing serious
injury and/or infection. This fluid may also be hot enough to cause burns. Use caution when dealing with
hydraulic fluid under pressure. Relieve pressure in the system before removing hoses, fittings, gauges, or
components. Never use your hand or any other body part to check for leaks in a pressurized line. Seek
medical attention immediately if you are cut by hydraulic fluid.
Warning
Personal Safety
Protect yourself from injury. Use proper safety equipment, including safety glasses, at all times.
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A - A
P301 004
Service Manual
LSHT Motors with Tacho-Connection
Introduction
Convert Standard OMS/T/V-motors into motors with Tacho-Connection
Standard OMS/T/V-motors can have Tacho-Connection subsequently installed in endcover by removing
endcover on OMS/T/V-motors and installing complete endcover with Tacho-Connection, as described in
this service manual.
Code Numbers
Complete end cover with tacho shaft.
OMS – T 151F0137
OMT – T 151B0132
OMV – T 151B0139
Cross section view
Symbols Used in Danfoss Literature
•
•
•
•
•
•
•
•
•
•
= Non removable part, use a new part
= External hex head
= Internal hex head
= Lubricate with hydraulic fluid
= Inspect for wear or damage
= Note correct orientation
= Mark orientation for reinstallation
= Torque specification
= Press in - press fit
= Pull out with tool - press fit
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Service Manual
LSHT Motors with Tacho-Connection
Disassembly of OMS/T/V – End Cover
Disassembly of OMS/T/V – End Cover
1. Fix motor in the holding tool.
2.
Loosen the four screws (15) in end cover (14).
3. Lift end cover.
4. Fill oil into the spacer hole and use the spacer (12) as a piston to press up the balance plate (8).
5. Remove washer spring (13).
6. Separate disc valve(7) from valve drive (1).
7. Remove stop ring (5). (Only some short versions).
8. Separate channel plate (2 or 3) from gear wheel set. (Notice OMS has check valves (4).)
9. Remove valve drive (1) from gear wheel set
6 11045212 • Rev BA • Mar 2014
Service Manual
LSHT Motors with Tacho-Connection
Assembly of OMS/T/V-End Cover with Tacho-Connection
OMS
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). Mark the tip of a spline tooth on the end of the valve
drive with the widest splines. Line up mark on wheel and valve drive (1). The end with the widest
splines and pin on valve drive must point upwards.
OMT/OMV
1. Mark the wheel of the gearwheel set at the point where the tip of a spline tooth is opposite the
bottom of a tooth in the external tooth (see drawing). Mark the bottom of a spline tooth on the valve
drive (1). Line up mark on wheel and valve drive. Pin on valve drive must point upwards.
a) Mount OMS channel plate (2) and mount O-ring (6).
b) Mount OMT/OMV channel plate (3) and mount O-ring (6) between gearwheel set and channel
plate
2. Mount stop-ring (5). (Only some short versions).
3. Mount disc valve(7) on tacho valve drive (1).
4. Mount washer spring (13) and balance plate (8) in end cover (16).
5. Mount the spacer ring (17) on tacho shaft with grease
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Service Manual LSHT Motors with Tacho-Connection
Assembly of OMS/T/V-End Cover with Tacho-Connection
6. Mount end cover (16) on the motor and guide the tacho shaft into valve drive so that it engage with
the valve drive.
7.
8) Lubricate threads and cross tighten screws (15).
OMS 75 – 80 Nm
OMT 135 – 145 Nm
OMV 190 – 210 Nm
8. After assembly test the motor in a testpanel. Check it for external leakage and correct rotation
direction.
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Service Manual LSHT Motors with Tacho-Connection
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Service Manual LSHT Motors with Tacho-Connection
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Service Manual LSHT Motors with Tacho-Connection
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Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and
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excel in the harsh operating conditions of the mobile off -highway market. Building on our extensive
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broad range of off -highway vehicles.
We help OEMs around the world speed up system development, reduce costs and bring vehicles to
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Go to www.powersolutions.danfoss.com for further product information.
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