Adjusting Counterbalance; Adjusting The Traction Drive For Neutral; Adjusting The Service Brakes - Toro 30868 Operator's Manual

Adjusting Counterbalance

The counterbalance dial (Fig. 44) is used to adjust the
pressure in the counterbalance circuit. Recommended
counterbalance pressure is 620 psi. Rotate the adjusting dial
(Fig. 44) clockwise to increase the pressure or
counterclockwise to decrease the pressure.
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Figure 44
1. Counterbalance dial
The traction assist valve (Fig. 44) is used to boost the
pressure in the counterbalance circuit. Recommended
traction assist counterbalance pressure is 700 psi when
traction pressure is above 1800 psi. Rotate the valve
(Fig. 44) clockwise to increase the pressure or
counterclockwise to decrease the pressure.
Important Traction unit must be at operating
temperature when adjusting hydraulic pressure.
Adjusting the Traction Drive for
Neutral
The machine must not creep when traction pedal is
released. If it does creep, an adjustment is required.
1. Park machine on a level surface, shut engine off,
position speed control into LOW range and lower
cutting units to the floor. Depress only the right brake
pedal and engage the parking brake.
2. Jack up left side of machine until left front tire is off the
shop floor. Support machine with jack stands to prevent
it from falling accidentally.
3. Start engine and allow run at low idle.
4. Adjust jam nuts on pump rod end to move pump control
tube forward to eliminate forward creep or rearward to
eliminate rearward creep (Fig. 45).
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2. Traction assist valve
40
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Figure 45
1. Pump rod
5. After wheel rotation ceases, tighten jam nuts to secure
adjustment.
6. Stop the engine and release the right brake. Remove
jack stands and lower the machine to the shop floor.
Test drive the machine to make sure it does not creep.

Adjusting the Service Brakes

Adjust the service brakes when there is more than 1 in.
(25 mm) of "free travel" of the brake pedal, or when the
brakes do not work effectively. Free travel is the distance
the brake pedal moves before braking resistance is felt.
1. Disengage the locking latch from the brake pedals so
that both pedals work independently of each other.
2. To reduce free travel of the brake pedals, tighten the
brakes:
A. Loosen the front nut on the threaded end of the
brake cable (Fig. 46).
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Figure 46
1. Brake cable
B. Tighten the rear nut to move the cable backward
until the brake pedals have 1/2 to 1 in. (13 to
25 mm) of free travel.
C. Tighten the front nuts after the brakes are adjusted
correctly.
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2
Adjust
Length
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2. Pump control tube
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