25
1
Figure 24
1. Expansion tank
2. If coolant level is low, remove expansion tank cap and
replenish the system. DO NOT OVERFILL.
3. Install expansion tank cap.
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 cSt @ 40_C 55 to 62
cSt @ 100_C 9.1 to 9.8
Viscosity Index ASTM D2270 140 – 152
Pour Point, ASTM D97 –35_F to –46_F
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. Position machine on a level surface, raise the
implement, and stop the engine.
2. Unscrew dipstick cap (Fig. 25) 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. 25), add enough fluid to
raise level to groove mark. Do not overfill by more
than 1/2 in. (13 mm) above groove.
1
2
Figure 25
1. Dipstick cap 2. Groove
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