Flushing The Hydraulic System - Toro ProLine H800 Service Manual

Flushing the Hydraulic System

Hydraulic System: Service and Repairs
Flush the hydraulic system whenever there is a severe component
failure or the system is contaminated (for example, the fluid appears
milky, black, or contains metal particles).
If a component failure occurs in the traction circuit; refer to the
Traction Circuit Component Failure (page 5–6)
regarding the importance of removing contamination from the
traction circuit.
1. Ensure that the hydraulic fluid is at normal operating temperature by
operating the machine for at least 10 minutes.
Before opening the hydraulic system, operate all the hydraulic
controls to release system pressure and avoid injury from the
pressurized hydraulic fluid; refer to
Hydraulic System (page
2. Park the machine on a level surface, engage the parking brake, lower the
cutting deck and stop the engine. Remove key from the key switch.
Note: Ensure that you clean all the hydraulic connections that are
disconnected for draining.
3. Drain the hydraulic fluid from the hydraulic reservoir; refer to the Operator's
Manual.
4. Read and adhere to the information provided in
Removing and Installing the Hydraulic System Components (page
Flush the hydraulic system with the hydraulic fluid as warm as
possible, but to prevent additional system damage, Do Not operate a
machine with contaminated hydraulic fluid to warm the fluid before
draining.
Follow all local codes and regulations when recycling or disposing
the hydraulic fluid and filters.
5. Clean the area around the mounting area of the hydraulic-fluid filter. Remove
and replace the hydraulic-fluid filter.
IMPORTANT
IMPORTANT
CAUTION
Releasing Pressure from the
5–5).
CAUTION
IMPORTANT
Page 5–66
for information
General Precautions for
5–63).
ProLine H800
19241SL Rev A