Toro 30308 - Hydraulic System Maintenance; Changing the Hydraulic Oil and Filter

Hydraulic System
Maintenance
Changing the Hydraulic Oil
And Filter
Initially , re place the h y draulic oil filter after the
first full da y’ s operation.
Important: Do not ex ceed 10 hour s or y ou
will dama ge the h y draulic system.
R e place the filter after ev er y 150 hours and oil
after ev er y 1500 hours .
T he axle housing acts as the reser v oir for the
system. T he transmission and axle housing are
shipped from the factor y with appro ximately 6
quar ts (5.6 l) of high quality h y draulic fluid. Chec k
the lev el of h y draulic oil before the engine is first
star ted and daily thereafter . T he recommended
re placement oil is as follo ws:
Toro Premium All Season Hydraulic Fluid
(Available in 5 gallon pails or 55 gallon drums. See
parts catalog or Toro distributor for part numbers.)
Alter nate fluids: If the T oro fluid is not a v ailable ,
other fluids ma y be used pro vided they meet all
the follo wing material proper ties and industr y
specifications . W e do not recommend the use
of synthetic fluid. Consult with y our lubricant
distributor to identify a satisfactor y product
Note: T oro will not assume responsibility for
damag e caused b y improper substitutions , so use
only products from re putable man ufacturers who
will stand behind their recommendation.
Material Properties:
Viscosity, ASTM D445
cSt @ 40°C 44 to 48
cSt @ 100°C 9.1 to 9.8
Viscosity Index ASTM
D2270
140 to 152
Pour Point, ASTM D97
-34°F to -46°F
Industry Specications:
API GL-4, AGCO Poweruid 821 XL, Ford
New Holland FNHA-2-C-201.00, Kubota UDT,
John Deere J20C, Vickers 35VQ25, and Volvo
WB-101/BM
Note: Fluid to operate the po w er steering is
supplied b y the h y draulic system transmission
c harg e pump .
Cold w eather star t-up ma y result in stiff operation
of the steering until the h y draulic system has
w ar med up . Using proper w eight h y draulic oil in
system will minimize this condition.
Note: Many h y draulic fluids are almost colorless ,
making it difficult to spot leaks . A red dye additi v e
for the h y draulic system oil is a v ailable in 2/3 oz.
(20 ml) bottles . One bottle is sufficient for 4-6
g al (15-22 1) of h y draulic oil. Order par t n umber
44-2500 from y our authorized T oro distributor .
1. Lo w er the dec k to the shop floor , set the
parking brak e , and tur n engine off .
2. Bloc k the tw o rear wheels .
3. J ac k up both sides of the front axle and suppor t
it with jac k stands .
4. Clean the area around the h y draulic oil filter
and remo v e the filter ( Figure 66 ).
Figure 66
1. Filter 3. Suction line
2. Return line
5. R emo v e the tube that connects the axle
housing to the transmission and allo w the oil
to flo w into a drain pan.
6. Install a new h y draulic oil filter and connect the
tube betw een axle housing and transmission.
7. Fill the axle (reser v oir) to the proper lev el
(appro ximately 6 quar ts); refer to Chec king the
Hy draulic Fluid.
8. R emo v e jac k stands .
9. Star t the engine , cycle the steering and lift
cylinders , and c hec k for oil leaks . Allo w the
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