Drive System Maintenance; Checking The Tire Pressure; Hydraulic System Maintenance; Checking The Hydraulic-Fluid Level - Toro 74855 Operator's Manual

Drive System
Maintenance

Checking the Tire Pressure

Service Interval: Every 25 hours—Check tire pressure.
Maintain the air pressure in the front and rear tires as
specified. Uneven tire pressure can cause uneven cut. Check
the pressure at the valve stem
when they are cold to get the most accurate pressure reading.
Refer to the maximum pressure suggested by the tire
manufacturer on the sidewall of the caster wheel tires.
Inflate the rear drive wheel tires to 90 kPa (13 psi).
Figure 47
1. Valve stem
(Figure 47). Check the tires
Hydraulic System
Maintenance
Oil Type: Toro HYPR-OIL® 500 or 20W-50 motor oil.
System Capacity: 4.495 L (152 oz) with a filter change.
Important: Use oil specified or equivalent. Other fluids
could cause system damage.
Checking the Hydraulic-Fluid
Level
Service Interval: Every 25 hours
Check the expansion reservoir, and, if necessary, add fluid
to the Full Cold line.
3
1. Expansion reservoir
2. Full Cold line
Changing the Hydraulic Filter
and Fluid
The filter and fluid are changed at the same time. Once the
new filter is installed and fluid is added, any air in the system
must be purged.
The bleeding process is repeated until the fluid remains at
the Full Cold line in the reservoir after purging. Failure to
properly perform this procedure can result in irreparable
damage to the transaxle drive system.
37
G020323
Figure 48
3. Engine
1
2