Overview
This manual includes information on the installation, maintenance, and minor repair of TM Motors. It
includes a description of the unit and its individual components, troubleshooting information, and minor
repair procedures.
Performing minor repairs requires the unit to be removed from the vehicle/machine. Thoroughly clean
the unit before beginning maintenance or repair activities. Since dirt and contamination are the greatest
enemies of any type of hydraulic equipment, follow cleanliness requirements strictly. This is especially
important when changing the system filter and when removing hoses or plumbing.
A worldwide network of Danfoss Authorized Service Centers is available for major repairs. Danfoss trains
and certifies Authorized Service Centers on a regular basis. You can locate your nearest Authorized
Service Center using the distributor locator at www.danfoss.com.
Warranty
Performing adjustments and minor repairs according to the procedures in this manual will not affect your
warranty. Major repairs requiring the removal of a unit’s center section, or front flange voids the warranty
unless a Danfoss Authorized Service Center performs them.
Symbols used in Danfoss literature
Service symbols used in Danfoss literature
Symbol description
WARNING may result in injury
CAUTION may result in damage to product or property
Non-reusable part, use a new part
External hex head
Internal hex head
Lubricate with hydraulic fluid
Pressure measurement/gauge location or specification
Clean area or part
Be careful not to scratch or damage
Note correct orientation
Torque specification
Pull out with tool – press fit
Cover splines with installation sleeve
Inspect for wear or damage
The symbols in the table above are in the illustrations and text of this manual. They communicate helpful
information at the point where it is most useful to the reader.
General instructions
Follow the general procedures below when repairing TMM constant displacement closed circuit motors:
Remove the unit
Prior to performing major repairs, remove the unit from the vehicle/machine. Chock the wheels on
the vehicle or lock the mechanism to inhibit movement. Be aware that hydraulic fluid may be under high
pressure and/or hot. Inspect the outside of the pump and fittings for damage. Cap hoses and plug ports
after removal to prevent contamination.
Service Manual
TMM Transit Mixer Axial Piston Motor, Size 070/084/089
Introduction
6
L1211037 • Rev AC • Apr 2014
