Toro Groundsmaster 7210, Service Manual

Page: 91 / 342

Testing the Hydraulic System
The most effective procedure to isolate the problems in the hydraulic system is to
use hydraulic test equipment, such as pressure gauges and flow meters in the
circuits during different operational checks; refer to
Special Tools (page 4–23) .
WARNING
Opening the hydraulic system without releasing pressure from the
system will cause the hydraulic fluid to escape, causing possible
injury.
Before you disconnect the hydraulic components or work on the
hydraulic system, release the pressure in the system; refer to
Releasing Pressure from the Hydraulic System (page 4–11) .
WARNING
Hydraulic fluid escaping under pressure can penetrate skin and
cause injury.
• Keep your body and hands away from pin-hole leaks or nozzles
that eject hydraulic fluid under high pressure.
• Do not use your hands to search for leaks; use a piece of paper
or cardboard.
• Hydraulic fluid escaping under pressure can have sufficient force
to penetrate the skin and cause serious injury.
• If hydraulic fluid is injected into your skin, the fluid damage to
your body must be surgically removed within a few hours by a
doctor familiar with this form of injury or gangrene may result.
CAUTION
Failing to use gauges having the recommended pressure (kPa/psi)
rating could damage the gauge and cause personal injury from
contact with hot, leaking hydraulic fluid.
Use gauges with the recommended pressure rating as listed in the
test procedures.
IMPORTANT
Before performing the hydraulic tests, check all obvious areas, such
as fluid supply, filter, binding linkages, loose fasteners, or improper
adjustments before you assume that a hydraulic component is the
source of the problem.
Groundsmaster 7210 Page 4–31 Hydraulic System: Testing the Hydraulic System
16222SL Rev C