Apparatus and method for converting a full-time four-wheel drive

Details Apparatus and method for converting a full-time four-wheel drive Apparatus and method for converting a full-time four-wheel drive

1979-09-26

1981-08-04

Silverstrim, John P.

Motor vehicles

Having four wheels driven

With manually operated means for disengaging drive to one or...

180250, B60K 1734

Patent

active

042817358

ABSTRACT:
A method for converting a full-time four-wheel drive transfer case for part-time four-wheel drive operation includes substituting an output shaft having a radially extended mounting flange at the forward end thereof. The original output shaft has a rear wheel drive gear secured thereon for engagement with the spider gears of a differential assembly, the spider housing of which is mounted on the transfer case input shaft for rotation therewith. The mounting flange of the substitute output shaft is adapted for connection to the rearward end of the spider housing upon removal of the spider gears from the differential assembly thereby to connect the substitute output shaft to the input shaft for rotation in unison. With the spider gears removed, the front wheel drive mechanism is selectively actuated by the sliding lock clutch on the input shaft, the spider housing and lock clutch including coacting gears which are meshed when the clutch is engaged. A spacer ring may be interposed between the sliding lock clutch and differential cross to maintain the axially spaced relation therebetween. The method of the invention includes the steps of removing the spider gears from the transfer case and securing the output shaft to the differential housing, thereby connecting the input and output shafts for rotation in unison.

REFERENCES:
patent: 2228581 (1941-01-01), Olen
patent: 2329916 (1943-09-01), Lamb
patent: 3650349 (1972-03-01), Cleveland
patent: 3848691 (1974-11-01), Dolan
patent: 4037429 (1977-07-01), Britzius

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