Operator's Manual

• Pressure dampener bladder
• Pump c hec k v alv es assemblies
R e place any components if necessar y .
Adjusting the Boom
Actuator
Inspect the actuator h y draulic oil for air bubbles
ev er y 400 hours .
1. P osition the spra yer on a lev el surface , lo w er
the booms into the spra y position.
2. Set the parking brak e , stop the pump , stop the
engine , and remo v e the ignition k ey
3. Attempt to lift the boom b y applying a
moderate amount of pressure (just enough
to lift the boom man ually) while obser ving
the actuator rod. If the actuator rod exhibits
mo v ement refer to belo w .
4. R e peat the procedure for the opposing boom.
If the actuator rod exhibits an axial mo v ement
(tra v els into or out of the cylinder) g reater than
0.085-0.100 inc h (2.16-2.54 mm), y ou ma y wish to
bleed the air from the h y draulic oil.
R efer to the Ser vice Manual for instr uctions on
ho w to bleed air from the actuators or contact an
A uthorized T oro Ser vice Distributor .
Emergency Manual
Operation of the Boom
Actuators
Note: Deter mine the left and right sides of the
mac hine from the nor mal operating position.
Use of the man ual r elief v alv e may cause the
boom to mo v e suddenl y and cause injur y to
y ou or other s.
• T ak e caution and adjust the man ual r elief
v alv e slo wl y .
• Ensur e the sur r ounding ar ea is clear and
no one is inside the operating range of
the boom.
Adjusting the man ual r elief v alv e with
electrical po w er pr esent could cause the
actuator operate ir r egular l y and cause injur y
to y ou or other s.
Do not use the man ual r elief v alv e while
electrical po w er is being supplied to the
actuator .
In case of an emerg ency suc h that the boom
m ust be mo v ed and no 12V DC po w er source is
a v ailable , the man ual relief v alv e can be used to
reliev e pressure within the actuator and allo w the
booms to be mo v ed man ually .
Important: T he man ual v alv e must not be
loosened mor e than 4 tur ns. T ur ning the v alv e
mor e than 4 tur ns may cause the v alv e to come
of f completel y allo wing h y draulic oil to spill
out.
1. Locate the man ual relief v alv e on the actuator
for eac h boom. T he man ual relief v alv e is the
smaller v alv e and is only on one side of the
actuator body ( Figure 46 ).
Figure 46
1. Actuator, right boom 2. Manual relief valve
Note: Due to the opposing orientation of
actuators in respect to eac h other the man ual
relief v alv e is on the forw ard face of the left
boom actuator and the rear face of the right
boom actuator .
2. Use a hexag onal wrenc h to loosen the man ual
relief v alv e no mor e than 2-3 tur ns . T he
45