21
Checking the Hydraulic System
Fluid
The front 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 high quality
hydraulic fluid. However, check fluid level before engine is
first started and daily thereafter.
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.
The following list is not assumed to be all–inclusive.
Hydraulic fluids produced by other manufacturers may be
used if they can cross reference to find an equivalent to the
products listed. Toro will not assume responsibility for
damage caused by improper substitutions, so use only
products from reputable manufacturers who will stand
behind their recommendation.
Universal Tractor Hydraulic Fluid
Mobil Mobil Fluid 424
Amoco 1000 Fluid
Chevron Tractor Hydraulic Fluid
Conoco Power–Tran 3
Exxon Torque Fluid
Pennzoil Hydra–Tranz
Shell Donax TD
Texaco TDH
Note: Many hydraulic fluids are almost colorless, making it
difficult to spot leaks. A red dye additive for the hydraulic
system oil is available in 2/3 oz. (20 ml) bottles. One bottle
is sufficient for 4–6 gal (15–22 1) of hydraulic oil. Order
part no.44–2500 from your authorized Toro distributor.
1. Position machine on a level surface, raise the
implement, and stop the engine.
2. Unscrew dipstick cap (Fig. 15) from the filler neck and
wipe it with a clean rag. Screw dipstick cap finger tight
onto filler neck. Unscrew the dipstick and check level
of fluid. If level is not within 1/2 in. (13 mm) from the
groove in the dipstick (Fig. 15), add enough fluid to
raise level to groove mark. Do not overfill by more
than 1/2 in. (13 mm) above groove.
Important When adding oil to the hydraulic system,
use a funnel with a fine wire screen—200 mesh—and
ensure funnel and oil are immaculately clean. This
procedure prevents accidental contamination of the
hydraulic system.
1
2
Figure 15
1. Dipstick cap 2. Groove
3. Screw dipstick filler cap finger–tight onto filler neck. It
is not necessary to tighten cap with a wrench.
4. Lower the implement.
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