FIELD: transport.
SUBSTANCE: gearbox comprises case 26 and heat exchanger 30 to withdraw heat from gearbox 8. Gearbox case 26 is provided with recess 56 for gearbox lubricator to pass there through and to accommodate heat exchanger 30. Bypass valve 48 is arranged on heat exchanger 30 to allow bypassing heat exchanger 30 after preset decreased or increased pressure. Note here that bypass valve 48 is made up of a seat valve and comprises valve cap 52, valve cap spring 50 and valve seat 54. Valve seat 52 and valve cap spring 50 are arranged on heat exchanger while valve seat 54 makes gearbox case part 26.
EFFECT: simplified design, reduced costs.
16 cl, 3 dwg
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