Belarus 1523, Operating Manual

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BELARUS-1523/1523 В /1523.3 /1523В.3 Construction and Operation
109
(14) and (22). To drain oil from the axle
beam, screw out the draining plug (26)
located in the FDA casing. Oil shall be
fed through the opening in one of hous-
ings until the lubricant in another hous-
ing reach the lower edge of the filling
opening. The FDA shall be filled with oil
on a horizontal surface.
The FDA casing (21) is con-
nected with the beam by means of the
pivot (24), on which the axle with the
wheels can swing in the cross plane
while deflecting to the angles limited by
the stops of the ribs in the housings (14)
and (22) when they contact the tractor
beam. The pivot is locked against axial
displacement by means of the washer
(23). The pivot is greased through the
lubricator (42).
Final Drive
The final drive is a pair of bevel
helical gears.
The driving gear (36) of the final
drive is mounted in the carriage (29) on
two taper roller bearings. The tightness
in the bearings is adjusted by means of
adjusting washers (30), after which they
are tightened by means of the nut (33).
The driven gear (19) is fitted on the
splines and centring spigot of the differ-
ential casing (18) and locked against ax-
ial displacement by means of the nut
(20).
The final drive mesh is adjusted
by means of the adjusting shims (28),
(15) placed between the flange of the
driving gear carriage and FDA casing as
well as between the left- and right-hand
housings and FDA casing, respectively.
Before adjusting the mesh, the differen-
tial bearings shall be adjusted by means
of the shims (15).
The opening for the plug (25)
serves for checking the adjustment of
the final drive mesh.
Oil leakage from the cavity of the
final drive and axle beam is prevented
by using the collars and rubber rings
placed in the fixtures, housings and driv-
ing gear carrier.
To prevent the oil upthrust up-
stream the collar of the driving gear, the
latter’s splined end is fitted with the
wiper ring (31) with spiral groves cut
over the outer diameter of the ring. A
slide bearing with crossed grooves is
mounted in the fixture (12).