Servicing The Planetary Gear Drive - Toro 30581 Groundsmaster 580-D Operator's Manual

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. 49).
Clean area around it, unscrew it with a wrench and
install replacement.
Figure 49
1. Hydraulic system breather
3. Close and latch hood.
Hydraulic System Test Ports
The test ports (Fig. 50) are used for testing the hydraulic
circuits. Contact your local Toro distributor for assistance
on use of these components.
1 2 3
5
Figure 50
1. Traction—reverse
2. Traction—forward
3. Charge pump
1
4
4. Steering control
5. Deck lift
43
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.
Checking the Oil Level
1. With machine on level surface, position wheel so the
check/drain plug is at either three or nine o'clock
position (Fig. 51).
Figure 51
1. Check/drain plug ( 3 or 9 o'clock position)
2. Remove plug. Oil should be to bottom of the hole.
3. Add gear oil, if necessary, to bring up to proper level
and install plug.
4. Repeat steps 1–3 on the opposite gear assembly.
Draining the Gear Oil
1. With machine on level surface, position wheel so the
check/drain plug is at lowest position.
2. Place drain pan under hub, remove plug and allow oil to
drain.
3. When oil has drained, position wheel so plug hole is at
three or nine o'clock position (Fig. 51).
4. Add approximately 32 oz. (1.24 l) high quality SAE
80–90 wt. gear lube to bring level up to bottom of hole
and install plug.
5. Repeat steps 1–4 on the opposite gear assembly.