Dnepr MT9 - Wheel Hub Dismantling and Assembling

After the lyre beads have been fitted, s li ghtly press down the
\'alve in wards, pump up the tube and lap the lyre a ll round with a
rubber hammer so
that it is un i fo rmly sealed in the rim recess.
Screw the valve nut home. Infl ate the fube to the required pressure
and screw on the ca p.
The wheels may be equipped with inner tubes having ru bber-
metal villves
that arc fitted with ou t us in g a check nut. \Vhenever
necessary, the valve may be held in p la ce by means of a t hr eaded
union of a pump . N\ilke sure that the tyre is correctly set on the
rim
(centring ma rks mu st be equ idi s tant from the rim al l a ro und
the lyre circumference).
T\TC pressure. kgf f cm2:
front wheel anrl sidecar wheel
rear wheel
spare wheel
13 + 0.1
. 2.6+0. 1
. 26+0. 1
Dismantling and Assembling the Wheel Hub
To disassemble the wheel hu b, proceed as follows:
case off the check nut. un sc rew the nul of the gla nd and rcmn\·c
the left-hand dista n ce bu shing;
insert the wheel
ax le from the s id e of splines, press out the c~;
lreme bearing from the wheel huh, remove the inte rm ed i ate bushing,
inner race
of the second ro ll er bearing and the right-hand distance
bushing;
using a mandr el nP-1117 , press ou t the thrust washe r a nd outer
race of the ro ll er hea ring.
Afl('r dismantl in g, was h the co mp onent parts and examine th em
fo r P" ""r l r"nrlitio n, rep lace the defective parts , if any.
R.e-assemble the hub in the following order:
in ser t lhe thru.sl washer and the right-hand di stance bushing
into lhe hub, ensu rin g
that the bushing shoulder enlers lhe recess of
the
thrust washe1 ·;
press in the bearing ou ter race with the sma ll er di ameter of the
taper hole toward s the thrust washer. Th e bea ring must be pressed
aga in st the thrust was he r. Insert the inner race of the bea rin g toge-
ther with rollers after first lubric ating them with grease 1-1 3
GOST 16 31 -6 1;
in se rt the interm ediate bu shing in to the open in g of the hub a ft er
first filling the inner
space of lhe hub to
1
/
3
of its capacity with lhe
above-mentioned grease;
lu b ri ra te the second roller hearing with the same grease and
press it in , with the sma ll er diameter of the outer race t owards the
hub nut;
ill "-P rt, from th e side of the bearing, the l ef t-hand distance bu sh-
ing into lhe nut assembled with the gland, screw the nut home to
tighten up
the beari ng s;
sc rrw off th e nut by
1
/
10
turn and tight en up th e ch ec k nul.
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