Charge Hydraulic System - Toro Groundsmaster 5900 Series Service Manual

Charge Hydraulic System

Groundsmaster ® 5900 & 5910
16227SL Rev B
Note: When initially starting the hydraulic system with new or rebuilt components
such as motors, pumps or lift cylinders, it is important that the hydraulic system
be charged properly. Air must be purged from the system to reduce the chance
of component damage.
Change hydraulic oil filters whenever hydraulic components are
repaired or replaced.
1. Park machine on a level surface, lower cutting decks fully, disengage PTO
and stop engine. Remove key from the key switch.
2. Make sure all hydraulic connections, lines and components are secured
tightly.
3. If hydraulic component failure was severe or the hydraulic system is
contaminated, flush and refill hydraulic system and hydraulic reservoir (see
Flush Hydraulic System (page
When filling hydraulic reservoir, use only hydraulic fluids specified
in Operator's Manual. Other fluids could cause system damage.
4. Make sure hydraulic reservoir is full. Add correct hydraulic oil to reservoir
if necessary.
5. Prime hydraulic pumps (see
Before jacking up the machine, review and follow Jacking
Instructions in Chapter 1 (page
6. Raise machine so that all wheels are off the ground and place appropriate
jack stands under the frame to support the machine.
7. Safely clamp or lock the front left and rear right wheels to prevent them from
rotating.
During initial operation, check hydraulic reservoir oil level frequently.
Add oil as necessary to keep reservoir at FULL level.
8. Make sure traction pedal and lift switches are in neutral. Start engine and
run at low idle speed. The gear pump should pick up oil and fill the hydraulic
system. If there is no indication of fill in thirty (30) seconds, stop the engine
and determine the cause.
IMPORTANT
5–77)).
IMPORTANT
Priming Hydraulic Pumps (page
WARNING
1–1).
IMPORTANT
Page 5–79
5–76)).
Hydraulic System: Service and Repairs