Danfoss TMM 070 User Manual

Case drain and heat exchanger
The pump and motor require case drain lines to remove hot fluid from the system. The pump and motor
drain from the topmost port to ensure the cases remain full of fluid. The motor case drain can connect to
the lower drain port on the pump housing or it can tee into the case drain line upstream of the heat
exchanger. A heat exchanger with bypass valve cools the case drain fluid before it returns to the
reservoir.
The schematic below shows the function of a hydrostatic transmission using an TMP axial variable
displacement pump with electric proportional displacement control (EDC) and an TMM fixed
displacement motor with integrated loop flushing device.
TMM with TMP EDC
AA
B B
L2 M3
M3
M5
M4
TMMTMP
M2L2
S
M2
M10
L1
C2C1
M1 L1 M1
Legend:
A, B – System ports: Ø 25.4 mm
L1, L2 – Case drain ports: M22x1.5
M1, M2 – System A/B gauge ports: M12x1.5
M3 – Charge gauge port, after filtering: M12x1.5
M4, M5 – Servo gauge ports: M12x1.5
M10 – Charge pump inlet pressure port: M12x1.5
S – Charge inlet port: M42x2
Service Manual TMM Transit Mixer Axial Piston Motor, Size 070/084/089
Introduction
L1211037 • Rev AC • Apr 2014 9

Danfoss TMM 070 Specifications

General

Brand	Danfoss
Model	TMM 070
Category	Engine
Language	English