Check Gear Case Oil Level; Check 90° Gear Case Oil Level - Toro AERATOR HC 4000 Operator's Manual

Note: It is a good practice to lubricate grease fittings after
washing machine.
4. To lubricate the center grease fitting on drive shaft assembly,
the aerator must be in the raised (transport) position, to gain
access thru slots in shields.

CHECK GEAR CASE OIL LEVEL

Every 25 hours operation, or seasonally, whichever comes first,
check oil level in each gear case.
1. At front of aerator, remove (2) plugs from gear case ports (Fig.
11).
2. Oil level should be to the top of each port. If oil is required,
add SAE 80-90 (ISO 150/220) gear oil.
Note: Under normal conditions the gear case oil level should
not drop. If oil level is low, check for signs of leakage and cor-
rect, as necessary. Should major failure of gearbox components
occur, drain the gear oil, flush the gear cases and install fresh
oil. The oil drain plug is located on bottom of each gear case.
3. Make sure end of gear case vent tube is open and clean
(Fig. 12).
CHECK 90° GEAR CASE OIL LEVEL
1. With the machine on a level surface, remove the oil fill/dipstick
plug (Fig. 13).
2. Add SAE 80-90 (ISO 150/220) gear oil, if needed, and install
the fill plug.
Note: Under normal conditions the gear case oil level should
not drop. If oil level is low, check for signs of leakage and cor-
rect, as necessary. Should major failure of gearbox components
occur, drain the gear oil, flush the gear case and install fresh
oil. The oil drain plug is located on bottom of gear case (Fig.
14).
3. Make sure vent hole in oil fill/dipstick plug is open and clean.
16
Figure 11
1. Reservoir fill plug (2)
Figure 12
1. Vent tube
Figure 13
1. Oil fill/dipstick