Service And Repairs; General Precautions For Removing And Installing Hydraulic System Components - Toro Groundsmaster 5900 Series Service Manual

Service and Repairs

General Precautions for Removing and Installing Hydraulic System
Components
Before Repair or Replacement of Components
After Repair or Replacement of Components
Groundsmaster ® 5900 & 5910
16227SL Rev B
1. Before removing any parts from the hydraulic system, park machine on a
level surface, lower cutting decks fully, disengage PTO and stop engine.
Remove key from the key switch.
2. Read and be familiar with all procedure steps before starting to remove,
repair, replace or install hydraulic system components.
3. Clean machine before disconnecting, removing 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 equipment.
Operate all hydraulic controls to relieve system pressure and avoid
injury from pressurized hydraulic oil. Controls must be operated with
the key switch in RUN and the engine OFF. Make sure all electrically
operated control valves are actuated. Return key switch to OFF after
pressure has been relieved. Remove key from the key switch.
4. Put caps or plugs on any hydraulic lines, hydraulic fittings or components left
open or exposed to prevent hydraulic system contamination.
5. Put labels on disconnected hydraulic lines and hoses for proper installation
after repairs are completed.
6. Note the position of hydraulic fittings (especially elbow fittings) on hydraulic
components before removal. Mark parts if necessary to make sure they will
be aligned properly when reinstalling hydraulic hoses and tubes.
1. Check oil level in the hydraulic reservoir and add correct oil if necessary.
Drain and refill hydraulic system reservoir and change oil filter if component
failure was severe or system is contaminated (see
(page 5–77)).
Follow all local codes and regulations when recycling or disposing
hydraulic fluid and filters.
2. Lubricate O−rings and seals with clean hydraulic oil before installing hydraulic
components.
3. Make sure all caps or plugs are removed from hydraulic tubes, hydraulic
fittings and components before reconnecting.
4. Use proper tightening methods when installing hydraulic hoses and fittings
(see Installing Hydraulic Hoses and Tubes (O-Ring Face Seal) (page
5. After repairs, check control linkages or cables for proper adjustment, binding
or broken parts.
CAUTION
IMPORTANT
Page 5–73
Flush Hydraulic System
Hydraulic System: Service and Repairs
5–7)).