Toro 30626 Operator's Manual page 29

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.
Checking the Hydraulic System
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. Check the level of the
hydraulic fluid before the engine is first started
and daily thereafter. The recommended replacement
fluid is:
Toro Premium Transmission/Hydraulic Tractor
Fluid
(Available in 5 gallon pails or 55 gallon drums. See parts
catalog or Toro distributor for part numbers.)
Alternate fluids: If the Toro fluid is not available, other
petroleum–based Universal Tractor Hydraulic Fluids
(UTHF) may be used provided its specifications fall
within the listed range for all the following material
properties and it meets industry standards. We do not
recommend the use of synthetic fluid. Consult with
your lubricant distributor to identify a satisfactory
product Note: Toro will not assume responsibility for
damage caused by improper substitutions, so use only
products from reputable manufacturers who will stand
behind their recommendation.
Material Properties:
Viscosity, ASTM D445
Viscosity Index ASTM D2270
Pour Point, ASTM D97
Industry Specifications:
cSt @ 40C 55 to 62
cSt @ 100C 9.1 to 9.8
140 – 152
–35F to –46F
Industry Specifications: (cont'd.)
API GL–4, AGCO Powerfluid 821 XL, Ford New Holland
FNHA–2–C–201.00, Kubota UDT, John Deere J20C, Vickers
35VQ25 and Volvo WB–101/BM.
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 (Figure 30) 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
inch (13 mm) from the groove in the dipstick
(Figure 30), add enough fluid to raise level to groove
mark. Do not overfill by more than 1/2 inch (13
mm) above groove.
1. Dipstick cap
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.
3. Screw dipstick filler cap finger–tight onto filler neck.
It is not necessary to tighten cap with a wrench.
4. Lower the implement.
Checking the Rear Axle
(Models 30627 & 30631 only
The rear axle has three separate reservoirs which use
SAE 80W-90 wt. gear lube. Although the axle is
29
Figure 30
2. Groove