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

Service and Repairs

General Precautions for Removing and Installing the Hydraulic
System Components
Before Repairing or Replacing the Components
After Repairing or Replacing the Components
Hydraulic System: Service and Repairs
1. Before removing any parts from the hydraulic system, park the machine on
a level surface, lower the cutting unit (or attachment), engage the parking
brake, set the key switch to the O
key switch.
2. Clean the machine before you disconnect, remove, or disassemble the
hydraulic components.
Note: Cleanliness is necessary whenever you work on the hydraulic
equipment. Ensure that you clean the hydraulic components, hoses,
connections, and fittings.
3. Label all the disconnected hydraulic lines and hoses for proper installation
after repairs are completed.
4. Record the position of the hydraulic fittings (especially elbow fittings) on the
hydraulic components before removal.
Note: Mark the parts, if necessary before removal and ensure that they are
aligned properly when installing the hydraulic fittings, hoses, and tubes.
Before disconnecting or doing any work on the hydraulic system,
release all the pressure in the system; refer to
from the Hydraulic System (page
5. The hydraulic fluid may be hot. Be careful when you loosen and remove
the hydraulic system components.
6. Install clean caps or plugs on the hydraulic lines, hydraulic fittings, and
components that are left open or exposed to prevent hydraulic system
contamination. Cap or plug the opening as soon as the opening is exposed.
1. Check the hydraulic-fluid level in the hydraulic tank and add correct quantity
of fluid if necessary. Use the hydraulic fluids that are specified in the traction
unit Operator's Manual.
Drain and fill the hydraulic tank and change the oil filter if the
component failure is severe or the system is contaminated; refer to
the traction unit Operator's Manual.
2. Lubricate the O-rings and seals with clean hydraulic fluid before installing
the hydraulic components.
3. Remove all the caps or plugs from the hydraulic tubes, hydraulic fittings, and
components before connecting them.
4. Use proper tightening procedures when installing the hydraulic hoses and
fittings; refer to Installing Hydraulic Hoses and Tubes (O-Ring Face Seal
position and remove the key from the
FF
WARNING
5–3).
IMPORTANT
Page 5–52
Relieving Pressure
Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A