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Draining the Hydraulic Reservoir
Every 1000 hours operation, or yearly, drain and replace
hydraulic fluid in reservoir. Total system capacity is
approximately 40 gal. (151 l); reservoir capacity is
approximately 32 gal. (121 l).
Note: If oil becomes contaminated (oil appears milky or
black), the system must be flushed. Contact your local Toro
distributor for assistance.
1. Place drain pan under reservoir. In turn, remove all 3
drain plugs and let oil drain into pan (Fig. 50).
2. Inspect O-rings on plugs and replace, if damaged.
Install drain plugs.
3. With machine on level surface, fill reservoir with
hydraulic oil until oil level is midway up in sight glass
(Fig. 48).
4. Install reservoir cap. Start engine and use all hydraulic
controls to distribute oil throughout the system. Check
for leaks. If repairs are needed, shut engine off before
beginning.
5. Check oil level; add if necessary.
Hydraulic System Breather
During normal operating conditions, replace the hydraulic
system oil breather every 1000 hours operation, or yearly.
Replace breather more frequently in extremely dusty, dirty
conditions.
1. Release latches, open hood and prop it open with rod.
2. Breather is located along right side of radiator (Fig. 51).
Clean area around it, unscrew it with a wrench and
install replacement.
Figure 51
1. Hydraulic system breather
3. Close and latch hood.
Hydraulic System Test Ports
The test ports (Fig. 52 & 53) are used for testing the
hydraulic circuits. Contact your local Toro distributor for
assistance on use of these components. The test ports are
located underneath the center of the machine.
1
1. Steering control
2. Charge pump
1
1. Deck lift
Servicing the Planetary Gear
Drive
Change oil initially after 50 hours operation and every 800
hours, or yearly. Use high quality SAE 80–90 wt. gear lube
as replacement. Check oil if leakage is noted.
46
3
2
4
Figure 52
3. Traction—reverse
4. Traction—forward
Figure 53
1
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