Toomey Earthmovers 4000B, Оригинальное руководство пользователя

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4000B USER HANDBOOK
Page 42
6.4 Inspection Intervals
6.4.1 Main Pivot Inspections
It is recommended that the main pivot pins (Drawbar, Centre Pivot & Swingarms) used with the
PWM fiber wound bushes and wiper seals be removed for inspection every 1000 hours. Once the
pins are removed, inspect the surface of the pin, the inner surface of the bearing and also the
condition of the seals for wear or damage. Check that the seals are still soft and flexible and
there is no visible wear on the seal lips. If there is visible wear or the seals or there are
contaminants in the bearing then replace the seals before assembly. It is recommended to carry
spare seals as this is not a costly exercise and will be far economical as opposed to having to
change the PWM bush and pins more frequently.
6.4.2 Cylinder Bearing Inspections
The hydraulic cylinders are fitted with greaseless SKF TXE spherical bearings. It is recommended
that at least one pin from each cylinder be removed so that the clevis bearings can be inspected
every 1000 hours. To do this, support the cylinder and then remove the pin opposite to how it
was installed. The pin and bearing may need to be soaked in a thin penetrating oil leading up to
their removal. Once the pin has been removed, rotate the inner part of the bearing. Check that
the green seals are not damaged and that there is no contamination in the bearing. If the seals
appear in good condition and the Teflon lining appears in good condition yet there is
contamination then cleaning the contamination out and re-assembling will be sufficient. If the
seals are damaged or the Teflon is damaged the bearing will need to be replaced.
NOTE: The life of the PWM bush is expected to far exceed these inspection intervals, however
guaranteeing the bush is free from contamination is critical in maintaining a long life.
NOTE: More frequent removal of the pins for inspection will also make it easier to remove the
pins as opposed to prolonged time left untouched. If the pins are left for a prolonged period
of time without inspection they may be damaged during removal and will need to be replaced.
NOTE: Failing to replace a damaged bearing can lead to damage to the pin and potentially
hydraulic cylinder or structural failure.
NOTE: As the bearings are not greased prolonged periods between removal of the pins can
result in the anti-sieze fitted in the factory being washed away and result in the pins being very
difficult to remove from the bearings. In extreme cases the pins would need to be lanced and
replaced with new ones.