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Maintenance Manual for Crawler Crane
4.9.2.2 Replacement of gear oil of travelling reducer
Figure 4-28 Position to add and replace gear oil of travelling reducer
Replacement steps:
a) Unscrew and remove oil drain plug and oil filler plug on the travelling reducer, and drain
original gear oil into proper vessel.
b) Clean the gear with tepid and clean oil before adding new oil, and remove the abrasive
matters and foreign matters.
c) Screw down oil drain plug.
d) Put funnel into oil filler to add specified gear oil until oil is visible in the inspection hole.
e) Screw down oil filler plug.
(1) Pay attention to environmental protection when disposing of waste oil.
(2) Use special tools when changing oil.
(3) Only when the machine has operated for a long time, can the gear oil be changed. It
shall be drained off when the oil is still hot.
A
4-43
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