Changing Hydraulic Oil And Filter - Toro Groundsmaster 228–D Operator's Manual

Figure 46
1. Front steering tower cover
3. Disconnect switch pigtail connector from wire harness
(Fig. 47).
4. Connect a continuity tester or ohm meter to switch
harness connector.
Figure 47
1. Parking brake interlock
switch
5. Loosen set screw securing collar to parking brake rod
(Fig. 47).
6. Slowly move collar on rod until it is aligned with cross
hairs on switch label (Fig. 47). Tighten collar set screw.
7. With parking brake disengaged, the switch circuit
should have continuity. If there is no continuity, move
collar slightly up rod until there is continuity and
tighten collar set screw.
8. Check adjustment as follows:
Engage the parking brake. Depress the traction pedal
while engine is running and the PTO lever is
disengaged. The engine should stop within 2 seconds. If
2. Parking brake lever/rod
2. Parking brake rod collar
3. Wire harness connector
36
engine stops, the switch is operating correctly; thus,
continue operation. If engine does not stop, there is a
malfunction in the interlock system.
9. Connect switch and install steering tower cover.
Changing Hydraulic Oil And
Filter
Initially, replace the hydraulic system oil and filter after the
first full day's operation — NOT TO EXCEED 10
HOURS. Replace the oil and filter every 250 hours
thereafter. The hydraulic system is designed to operate on
any high quality detergent oil having the American
Petroleum Institute — API — "service classification"
SF/CC or CD. Oil viscosity — weight — must be selected
according to anticipated ambient temperature for the season
in which product will be used.
Temperature/viscosity recommendations are:
Expected Ambient
Temperature
(Extreme) over 90 F
(Normal) 40–100 F
(Cool–Spring/Fall)
30–50 F
(Winter) Below 30 F
Note: Do not mix engine oil and automatic transmission
fluid or hydraulic component damage may result. When
changing fluids, also change transmission filter. DO NOT
USE DEXRON II ATF.
Note: Fluid to operate the power steering is supplied by the
hydraulic system transmission charge pump.
Cold weather start–up may result in "stiff" operation of the
steering until the hydraulic system has warmed up. Using
proper weight hydraulic oil in system will minimize this
condition.
The axle housing acts as the reservoir for the system. The
transmission and axle housing are shipped from the factory
with approximately 5 quarts (4.7 l) of SAE 10W-30 engine
oil. However, check level of transmission oil before engine
is first started and daily thereafter.
1. Lower cutting unit to shop floor, set parking brake, and
turn engine OFF. Block the two rear wheels.
2. Jack up both sides of the front axle and support it with
jack stands.
Recommended Viscosity
and Type
SAE 30, Type SF, CC or
CD engine oil.
SAE 10W-30 or 10W-40.
Type SF, CC or CD engine
oil.
SAE 5W-30, Type SF, CC
or 30–50 F CD engine oil.
Type "F" or "FA" ATF
Automatic Transmission
Fluid.