TM 5-3820-233-35/1
Figure 32-2 (2)- Continued
Caution. Cleanliness is of extreme
(i) Inject grease into voids between
importance and an absolute must in the repair
the rollers in the bearing. Clean all grease
and maintenance of the pitman bearing and
from face of bearing inner race.
(j) Install grease flingers with the
shaft assembly. Keep bearings well covered
until they are ready to be installed into the
beveled faces outward as shown on figure
pitman.
32-19.
(k) Install pitman end caps (145 and
(d) Position the pitman bearing and
151), and secure in place with capscrews (143
shaft assembly so that it is in line with the
and 149) and lockwashers (144 and 150)
pitman bore. Slide one end of the shaft into
(fig. 32-2).
the pitman until bearing is started into the
(l) Install grease seals (118 and 142).
pitman bore.
Measure clearance between outside rim of
(e) Devise a press similar to one used
seals and the mating grooves in the pitman
..
for pitman bearing and shaft removal. Start
end caps as shown on figure 32-20. There
bearing into the pitman bore. Make sure bear-
should be a clearance of at least 0.010 inch
ing is square with face of bore (fig. 32-18).
completely around the circumference of seal.
Very slight pressure is required by press to
If clearance is less, loosen socket head cap-
push bearing into pitman bore if bearing is
screws and lightly tap the end cap toward the
square with bore.
side where clearance is short, then tighten cap-
(f) Press shaft and bearing assembly
screws and recheck clearances.
until bearing farthest from jack passes
(2) Side beating reassembly. The two
through the seat and into the pitman. Slide
side bearings are identical in construction and
bearing and shaft assembly through the pit-
maintenance procedure. However, there are
man until bearing farthest from the jack is
parts that are designated as right and left
in line with bearing seat on opposite side of
hand and must be assembled as such. The
pitman.
right hand and left hand of crusher is de-
Note. Be sure bearing outer race is not forced
termined when standing behind the crusher
out of line with bearing inner race when pushing pit-
facing the tension rod.
man bearing and shaft assembly through the pitman.
(a) Pencil mark the center line of
(g) Realine the shaft and shorten the
tapped hole for setscrew shown on figure 32-
chain on the press. Press both bearings into
their respective seats. Be sure bearings are
pendicular to the face of the housing.
square with the outer face of the pitman.
(b) Line up center of hole in oil seal
(h) Press bearing and shaft assembly
with setscrew hole, and pencil mark face of
into pitman until the outer races of the bear-
seal.
ings are equal-distant from the ends of pit-
(c) Aline the two pencil marks and in-
man faces.
stall oil seal into bearing housing, with lip
4-17
