Toro 30626 Operator's Manual page 50

Changing the Hydraulic
System Fluid
Service Interval: Every 1,000 hours
The hydraulic system fluid must be changed after every
1000 hours of normal operation or every two years,
whichever comes first.
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:
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. Start engine, park machine on a level surface, lower
implement to the shop floor, set the parking brake,
and shut engine off. Block the two rear wheels.
2. Jack up both sides of front axle and support it with
jack stands.
3. Clean area around hydraulic fluid filter and remove
filter.
cSt @ 40C 55 to 62
cSt @ 100C 9.1 to 9.8
140 – 152
–35F to –46F
4. Remove drain plug from fitting between axle housing
and oil filter and allow fluid to flow into drain pan
(Figure 75).
1. Drain plug
5. Install new filter; refer to steps 1–2 in Replacing
Hydraulic Oil Filter, for proper procedures.
6. Install drain plug in fitting between axle housing and
filter (Figure 75).
7. Remove dipstick from axle filler tube (Figure 76) and
fill axle to proper level with correct type of hydraulic
fluid; refer to table above.
8. Start and run the engine at idle speed for about two
minutes and turn the steering wheel lock to lock to
purge air trapped in the system. Shut the engine off.
9. Leave machine set for two additional minutes,
then remove dipstick and check fluid level in axle
(Figure 76). If level is low, add fluid until level
matches groove in dipstick (Figure 76). If level is too
high, remove drain plug (Figure 75) and drain fluid
until level matches groove in dipstick.
50
Figure 75