POTILA MASTER 500, Руководство по эксплуатации

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Wheel hub
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Check the bearing clearance before lubricating the hubs.
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Extend the cultivator.
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Lower the cultivator on its tines so that the wheels lift off the ground.
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Hold the wheel firmly and feel for play: the wheel must rotate easily without
perceptible play in the bearing.
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To tighten the bearing, remove the dust cap (12) by tapping. Remove the castle
nut pin (11) and tighten the castle nut (10) while rotating the wheel until you feel
light resistance in the bearing.
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Open the nut until the pin can be installed in the next slot in the nut.
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If a nut slot is already aligned with the pin hole, open the nut to align the hole
with the next slot.
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Tap the dust cap in place.
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Press petroleum jelly into the hub until some lubricant comes out between
the hub seal (2).
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Finally, check the tightness of the wheel nuts.