Emergency Manual Operation; Of The Boom; Inspecting The Nylon Pivot; Actuators - Toro 41177 Multi-Pro 1250 Operator's Manual

the actuator rod. If the actuator rod exhibits
movement refer to below.
4. Repeat the procedure for the opposing boom.
If the actuator rod exhibits an axial movement
(travels into or out of the cylinder) greater than
0.085-0.100 inch (2.16-2.54 mm), you may wish to
bleed the air from the hydraulic oil.
Refer to the Service Manual for instructions on
how to bleed air from the actuators or contact an
Authorized Toro Service Distributor.
Emergency Manual
Operation of the Boom

Actuators

Note: Determine the left and right sides of the
machine from the normal operating position.
Use of the manual relief valve may cause the
boom to move suddenly and cause injury to
you or others.
• Take caution and adjust the manual relief
valve slowly.
• Ensure the surrounding area is clear and
no one is inside the operating range of
the boom.
Adjusting the manual relief valve with
electrical power present could cause the
actuator operate irregularly and cause injury
to you or others.
Do not use the manual relief valve while
electrical power is being supplied to the
actuator.
In case of an emergency such that the boom
must be moved and no 12V DC power source is
available, the manual relief valve can be used to
relieve pressure within the actuator and allow the
booms to be moved manually.
Important: The manual valve must not be
loosened more than 4 turns. Turning the valve
more than 4 turns may cause the valve to come
off completely allowing hydraulic oil to spill
out.
1. Locate the manual relief valve on the actuator
for each boom. The manual relief valve is the
smaller valve and is only on one side of the
actuator body (Figure 72).
Figure 72
1. Actuator, right boom
Note: Due to the opposing orientation of
actuators in respect to each other the manual
relief valve is on the forward face of the left
boom actuator and the rear face of the right
boom actuator.
2. Use a hexagonal wrench to loosen the manual
relief valve no more than 2-3 turns. The
cylinder should start stroking manually or by
external pressure at this time.
3. Once the original position of the actuator
is recovered, close the manual relief valve.
Torque the valve to 1.1-2.1 ft-lb (1.5-2.9 N⋅m).

Inspecting the Nylon Pivot

Bushings

Inspect the nylon pivot bushings in the center
boom every 400 hours and/or yearly for damage.
1. Position the sprayer on a level surface, set the
parking brake, stop the pump, stop the engine,
and remove the ignition key.
2. Extend the booms to the spray position and
support the booms using stands or straps from
a lift.
3. With the weight of the boom supported,
remove the bolt and nut securing the pivot pin
to the boom assembly (Figure 73). Remove the
pivot pin.
58
2. Manual relief valve