Service And Repairs; General Precautions For Removing And Installing Hydraulic System Components; Check Hydraulic Lines And Hoses - Toro Groundsmaster 7200 Service Manual

Service and Repairs

General Precautions for Removing and Installing Hydraulic System Components

Before Repair or Replacement of Components
1. Before removing any parts from the hydraulic sys-
tem, park machine on a level surface, engage parking
brake, lower cutting deck (or implement) and stop en-
gine. Remove key from the ignition switch.
2. Thoroughly clean machine before disconnecting, re-
moving or disassembling any hydraulic components.
Make sure hydraulic components, hoses, connections
and fittings are cleaned thoroughly. Always keep in mind
the need for cleanliness when working on hydraulic
components.
3. Put labels on disconnected hydraulic lines and
hoses for proper installation after repairs are completed.
4. Note the position of hydraulic fittings (especially el-
bow fittings) on hydraulic components before removal.
Mark parts if necessary to make sure they will be aligned
properly when reinstalling hydraulic fittings, hoses and
tubes.
WARNING
Before disconnecting or performing any work on
the hydraulic system, all pressure in the system
must be relieved. See Relieving Hydraulic System
Pressure in the General Information section.
5. Hydraulic oil may be hot. Be careful when loosening
and removing hydraulic system components.

Check Hydraulic Lines and Hoses

WARNING
Keep body and hands away from pin hole leaks
or nozzles that eject hydraulic fluid under high
pressure. Use paper or cardboard, not hands, to
search for leaks. Hydraulic fluid escaping under
pressure can have sufficient force to penetrate
the skin and cause serious injury. If fluid is in-
jected into the skin, it must be surgically re-
moved within a few hours by a doctor familiar
with this type of injury. Gangrene may result from
such an injury.
Groundsmaster 7200/7210
6. Put clean caps or plugs on any hydraulic lines, hy-
draulic fittings and components left open or exposed to
prevent contamination. Cap the opening as soon as line
or port is exposed.
After Repair or Replacement of Components
1. Check oil level in the hydraulic tank and add correct
oil if necessary. Use only hydraulic fluids specified in Op-
erator's Manual. Drain and refill hydraulic tank and
change oil filter if component failure was severe or sys-
tem is contaminated (see Flush Hydraulic System in this
section).
2. Lubricate O–rings and seals with clean hydraulic oil
before installing hydraulic components.
3. Make sure caps or plugs are removed from the hy-
draulic tubes, hydraulic fittings and components before
reconnecting.
4. Use proper tightening methods when installing hy-
draulic hoses and fittings (see General Information sec-
tion).
5. After repairs, check control linkages or cables for
proper adjustment, binding or broken parts.
6. After disconnecting or replacing any hydraulic com-
ponents, operate machine functions slowly until air is
out of system (see Charge Hydraulic System in this sec-
tion).
7. Check for hydraulic oil leaks. Shut off engine and cor-
rect leaks if necessary. Check oil level in hydraulic tank
and add correct oil if necessary.
Check hydraulic lines and hoses daily for leaks, kinked
lines, loose mounting supports, wear, loose fittings,
weather deterioration and chemical deterioration. Make
any necessary repairs before operating equipment.
Page 4 – 43 Hydraulic System