Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1990-06-04
1991-06-25
Watson, Robert C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29263, B23P 1904
Patent
active
050255428
ABSTRACT:
A bushing extractor/installer apparatus for extracting an existing bushing having an axial throughbore from a vehicular suspension spring and installing a replacement bushing therein. The apparatus comprises a threaded rod, a shell portion, and a pair of circular disks: one disk for extraction of the existing bushing, the other disk for installation of the replacement bushing. The threaded rod is slidably sequentially inserted through a hydraulic ram having a throughbore, the shell portion with a cavity thereof being directed toward the bushing to be extracted, the bushing and the extraction disk. The shell portion being larger than and the extraction disk being smaller than the spring opening containing the bushing, the ram, in cooperation with the threaded rod and the extraction disk, urges the bushing into the cavity of the shell portion. The threaded rod is then slidably sequentially inserted through the hydraulic ram, the shell portion with the cavity thereof directed away from the bushing to be installed, the replacement bushing, the spring and the installation disk. The installation disk being larger than and the replacement bushing being substantially the same size as the opening in the spring, the ram, in cooperation with the threaded rod and the installation disk, urges the replacement bushing into the spring opening, completing the installation of the replacement bushing therein.
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