Figure 4-6. Spring and attaching parts--exploded view.
NOTE
4-12. Spring and Shock Absorber Maintenance
The spring end of the right spring shackle
a. Maintenance of the springs consists of regular
U-bolt has a left-hand thread and requires a
lubrication of shackles and pivot bolt with chassis
left-hand threaded bushing.
grease as described in the lubrication chart (fig. 3-
The left-hand threaded portion of the U-bolt has an
identifying fin on the end of the threaded section.
damaged, replace.
The left-hand threaded bushing has six radial
b. Maintenance of the shock absorbers consists of
notches on the bushing face. Postion the spring eye
regular cleaning of the bushings with hydraulic
over the shackle U-bolt and hold it tightly against
brake fluid to be certain that no oil or grease has a
the oil seal. Install the lower bushing holding the
chance to deteriorate the rubber.
spring eye and U-bolt tightly together. Tighten the
4-13. Spring and Shock Absorber Installation
bushing until the hex head is about one-thirty-
a. Install Shackle U-Bolt (if not already on the
second in inch away from the spring eye. Lubricate
trailer) (fig. 1-4). Place oil seal retainers, small
end
the shackle (fig. 3-l). Test the shackle flexibility. If
first, on shackle U-bolt. Place oil seals in against
it is not free, the binding bushing must be removed
retainers. Push one end of "U" bolt through holes
and reinstalled.
at end of shackle braket and screw on shackle
c. Install Pivot Bolt (figs. 1-1 and 4-6). Line up
upper bushing.
the bolts in the spring pivot bolt bracket and the
NOTE
bushing in the spring eye and slip the pilot bolt into
Right spring shackle U-bolt must be
place with the lubrication fitting toward the out-
positioned so that right-hand threaded
side. Install and tighten the pivot bolt nut, lining up
bushing is used to fasten it to shackle
the cotter pin hole in the pivot bolt with one of the
bracket. Tighten the bushing until the hex
grooves in the nut. Install and bend back the cotter
head is about one-thirty-second inch from
pin.
the bracket.
d. Install Spring Clips (fig. 1-5). With the spring
b. Install Spring Shackle Lower Bushing (figs. 1-
installed on the shackke U-bolt and the pivot bolt ( b
4 and 4-6.
and c above), center the axle spring pad over the
4-8