Stiga 13-7454-11, Руководство по ремонту

Страница: 46 / 123

4.1 Safety
Hydraulic oil under pressure
can be very dangerous if any
pressurised lines leak. To mini-
mise the risk of personal injury,
always wear protective goggles
and protective gloves when
working with the hydraulic sys-
tem.
Before starting the engine,
place the machine outdoors or
connect the exhaust extraction
system to the exhaust pipe.
Otherwise personnel will be poi-
soned by the exhaust fumes.
Cleanliness is a condition of all
work with the hydraulic system.
Foreign particles and contami-
nation will compromise the
function and reliability of the
system. Always cover openings
in hoses, pipes and connec-
tions when components are re-
placed.
4.2 Configuration
The machines have hydraulically pow-
ered PTO and are equipped with a hy-
draulic system with three functions as
below:
• Drive system
• External hydraulics
• PTO drive
The different systems operate separately,
but with the same oil. Each system has its
own pump.
The pressure in the drive system de-
pends on the power requirement of the
wheels and is limited by the engine power
output.
The pressure in the PTO drive system
depends on the power requirement and is
limited to 220 bar.
The external hydraulics are limited to 125
bar and divided into the following sec-
tions:
• Two double action sockets for functions
in attached implements.
• One socket at the rear, parallel con-
nected with one of the sockets above
(the right hand).
• Double action implement lift.
• Hydraulic steering.
WORKSHOP MANUAL
TITAN
Chapter
4 - Hydraulic system
EDITION
2018
Page
4 4