| 摘要 |
A power transfer device for four-wheel drive in combination with a power transmission having a differential gear unit for front-wheel drive. The power transfer device comprises a transfer casing detachably secured at one side thereof to the transmission casing, a carrier member rotatably mounted within the transfer casing and arranged coaxially with the differential gear unit, an output gearing assembled within the transfer casing and arranged to be driven by the carrier member for rear-wheel drive, a front-wheel axle drivingly connected at its inner end with the differential gear unit and extending outwardly through the transfer casing, and a hollow shaft arranged in surrounding relationship with the front-wheel axle and slidably engaged at its one end portion with the carrier member to be shifted to a position in which the other end of the hollow shaft is brought into engagement with the differential gear unit for four-wheel drive.
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