Cleaning The Radiator; Brake Maintenance; Adjusting The Parking Brake Interlock Switch - Toro 30383 Operator's Manual

Polar trac tractor
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1. Check the level of the coolant in the expansion tank
(Figure 43). The coolant level should be between the
marks on the side of the tank.
Figure 43
1. Expansion tank
2. If coolant level is low, remove the expansion tank
cap and replenish the system. Do not overfill.
3. Install the expansion tank cap.

Cleaning the Radiator

Service Interval: Before each use or daily—Clean the
radiator with compressed air (do not
use water)
To prevent the engine from overheating, the radiator
must be kept clean. Normally, check the radiator daily
and, if necessary, clean any debris off these parts.
However, it will be necessary to check and clean
the radiator frequently in extremely dusty and dirty
conditions.
Note: If the PTO or engine shuts off due to
overheating, first check the radiator for excessive buildup
of debris, ice, or snow.
Clean the radiator as follows:
1. Open the hood.
2. Working from the fan side of the radiator, blow out
debris with low pressure (50 psi) compressed air (do
not use water). Repeat the step from the front of
the radiator and again from the fan side.
3. After the radiator is thoroughly cleaned, clean out
debris that may have collected in the channel at the
radiator base.
4. Close the hood.

Brake Maintenance

Adjusting the Parking Brake
Interlock Switch
1. Stop the machine, move the control levers fully into
the neutral-locked position, set the parking brake,
and remove the ignition key.
2. Remove the bolts securing the front panel and
remove the panel (Figure 44).
1. Front panel bolts
3. Loosen the 2 screws securing the interlock switch.
1. Tab on the brake shaft
2. Parking brake interlock
switch
37
Figure 44
Figure 45
3. Screws
4. 0.015 to 0.045 inch (0.4 to
1 mm)

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