Stiga 13-7454-11, Workshop Manual

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4 Hydraulic system
General description
Titan machines are equipped with hydraulic transmission. The engine drives a hydraulic
pump, which pumps oil through the front and rear wheel motors. The machines are man-
ufactured with hydraulically driven PTO.
Front and rear motors are connected in series, which means that the front and rear
wheels are forced to turn at the same speed. The design permits a certain degree of dif-
ferential effect to facilitate cornering.
The machines are also equipped with hydraulic steering, hydraulic implement lift and
functions for external hydraulics.
This chapter contains a description and fault tracing of the hydraulic system, and infor-
mation about how adjustments should be carried out.
WORKSHOP MANUAL
TITAN
Chapter
4 - Hydraulic system
EDITION
2018
Page
4 3
Contents
4.1 Safety ..................................................4 4
4.2 Configuration .....................................4 4
4.3 Description of drive system .............4 5
4.3.1 Physical description .......................4 5
4.3.2 Function descriptio .........................4 8
4.4 Description of the steering system .5 2
4.4.1 Physical description .......................5 2
4.4.2 Function description .......................5 4
4.5 Description of hydraulic sockets .....5 8
4.5.1 Use of hydraulic sockets .................5 8
4.5.2 Physical description .......................5 9
4.5.3 Function description .......................6 1
4.6 Description of PTO drive ..................6 9
4.6.1 Physical description .......................6 9
4.6.2 Function description .......................7 1
4.7 Repair .................................................7 4
4.7.1 Changing hydraulic oil, filter ...........7 4
4.7.2 Level indicator for hydraulic oil ........7 5
4.7.3 Changing the oil in the wheel
motors .....................................................7 5
4.7.4 Replacing the belts for the hydraulic
pump .......................................................7 6
4.7.5 Adjusting drive belts .......................7 8
4.7.6 Replacing hydraulic pump ..............7 9
4.7.7 Removing the PTO pump ............... 80
4.7.8 Repair hold height position ............. 80
4.8 Vacuum pump ....................................8 2
4.9 Adjustments .......................................8 3
4.9.1 Pressure, PTO drive .......................8 3
4.10 Hydraulic diagram ...........................8 4