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These bushings require no lubrication and no attention other than to keep the bolt nut drawn up snugly. To remove and replace this rubber spring eye bushing the special press or tool shown in Fig. 238, is necessary. The operation of this tool is quite simple.
Inlox Bushing Spring Shackle
To remove the bushing place the press in position shown in Fig. 238, with the adapter plug inside the bushing. Turning the screw with a wrench will force the bushing from place. To replace this bushing, set up the press around the spring eye. Put the
Fig. 238— Inlox Bushing Press
adapter into the new bushing and place bushing and adapter in the
press, with the bushing lined up with the hole in the spring eye.
Turning the screw will force the bushing into position.
The rear spring shackle on the Master passenger
cars and -ton trucks
as well as the front spring shackle on the 1/2-ton and 1 1/2-ton
trucks is of the threaded type. In this design threaded sleeves
or bushings are pressed into the spring hanger and into the eye
of the spring. Threaded pins with tapered ends are screwed into
the sleeves with each end projecting an equal amount or distance.
The shackles are plain, heavy gauge steel stampings with tapered
holes which fit tightly on the tapered ends of the pins. A draw
bolt,having a
117square shoulder under its rounded head, engages each outer shackle.
A nut at the inner side of each inner shackle serves to draw both
inner and outer shackle members up snugly on the pins. See Fig.
239.
The pins are drilled from their outer ends to the center where
a cross hole connects it with the threaded portion. Lubrication
fittings are assembled in the end of each central hole to provide
for lubrication of the threads. Cork washers are assembled at each
end between the shackle and the hanger and between the shackle
and the spring, to retain the lubricant in the threaded portion.
In action, this shackle, being tight on the tapered pin end, oscillates
the pin in the threaded portion. This design uses all of the relatively
large
Fig. 239— Thread Type Spring Shackle
threaded surface for a bearing, reducing wear to a minimum and
insuring long bearing life to these members.
If it becomes necessary to remove these sleeves or bushings from
either the spring eye or the spring hanger, remove the draw bolt
and the shackles.
Fig. 240— Thread Type Spring Shackle Bushing Press
Remove the tapered pins from the sleeve and thread the end of the
tool, shown in Fig. 240, into the sleeve. Turning the pull nut
with a wrench will remove the sleeve or bushing.
