TP-6519 8/1722 Section 2 Scheduled Maintenance
2.6 Stepper Motor Coupling
Replace the stepper motor coupling and bushings at the
intervals shown in the service schedule. See the Parts
Catalog for replacement part numbers.
Figure 2-8 shows the location of the coupling assembly
under the air cleaner. Loosen the set screw to remove
the coupling from the motor shaft.
1. Coupling and bushing
1
tp6519
Figure 2-8 Stepper Motor Coupling
tp6518_9
1
1. Coupling
2. Bushing
2
Figure 2-9 Stepper Motor Coupling and Bushing
2.7 Exhaust System
Remove all combustible materials from the exhaust
location. Combustible materials include building
materials as well as natural surroundings. Keep dry
field grass, foliage, and combustible landscaping
material a minimum of 1.5 m (5 ft.) from the exhaust
outlet.
Periodically inspect the exhaust system components for
cracks, leaks, and corrosion.
D Check for corroded or broken metal parts and replace
them as needed.
D Check that the exhaust outlet is c lear.
2.8 Battery
Sulfuric acid in batteries.
Can cause severe injury or death.
Wear protective goggles and
clothing. Battery acid may cause
blindness and burn skin.
WARNING
Battery electrolyte is a diluted sulfuric acid. Battery acid
can cause severe injury or death. Battery acid can cause
blindness and burn skin. Always wear splashproof safety
goggles, rubber gloves, and boots when servicing the battery.
Do not open a sealed battery or mutilate the battery case. If
battery acid splashes in the eyes or on the skin, immediately
flush the affected area for 15 minutes with large quantities of
clean water. Seek immediate medical aid in the case of eye
contact. Never add acid to a battery after placing the battery in
service, as this may result in hazardous spattering of battery
acid.
Battery acid cleanup. Battery acid can cause severe
injury or death. Battery acid is electrically conductive and
corrosive. Add 500 g (1 lb.) of bicarbonate of soda (baking
soda) to a container with4L(1gal.)ofwaterandmixthe
neutralizing solution. Pour the neutralizing solution on the
spilled battery acid and continue to add the neutralizing
solution to the spilled battery acid until all evidence of a
chemical reaction (foaming) has ceased. Flush the resulting
liquid with water and dry the area.
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