Dnepr MT10-36 - Tyre Repairs; Mounting the Tyres

Tyre Repairs
The damaged spot on the tube is easily detected by the noise of
leaki
ng air . If a puncture is too sma ll, immerse the tube inrt o wat~ r
and l ocate the puncture by watching air bu bbles escaping from the
wate r.
Ciean off the damaged spot, using a file or an emery cloth, and
wash it wit h a cl ean petrol to remove 1the dust. If special patches are
not availabl · e, use a part or a piece of another tyre t ube ,of a size
so mewhat larger tha n a patch ~o be cut out. Clean this piece of ty-
re 1 tu 'be and wash it wit h cle an petr·ol. Coat the damaged spot and
thus tr eated piece o•f tube (to be used as a patch) wit h rubber ce-
ment, ensuring that the rubber cement-coated area on the tube ove:--
r eaches the ed ge s of a patch to be m ade by 10 to 1·5 mm. After 10 to
15 min, apply another l ayer of rubber cement and wai t un til it dries
out well, the n cut out a patch to a required size, apply it to the da-
maged spot on the tub e. Roll on the patch (to remove the air), star-
ting from centre a nd working towards the edges.
If the tyre repair kit contai ns special patches oo ated with a l ayer
of rubber ce m ent and special prDtective cloth, these must be used
aft
er first removing the l ayer of protective cloth. Such a patch does
not need to
be coa ted wit h rubb er cement, but it mu st be refreshed
with petrol. '
The faulty slide va l ve must be replaced. If the air leaks between
the va l ve an d tub'e, ti gt ht en up the nut secu ring the valve, by usi ng
two wre nches.
Mounting the Tyres
To
mount the tyres, proceed as f,ollows:
m
ake sure that the out er casing is free 10f forei, gn matter that
might ca u se damage to the tube, and, using a p ape r packet with tal-
cum, evenly pOIWder the inner space of the c asing ;
if
the rim b and was re moved during dismantling, fit it · back on
the rim, ens uring that the 'band hole is matched wit h the rim hole
(the rim band must completely · cover all the ni pple h eads) ;
on pl ac ing a porhon of the tyre bead in the rim recess, fit it on
the rim by u sing tyre irons, and shift the tyre be ad towa . rd the rim
bead;
powder the sl i ghtly infla ted tube with ta lcum, in sert its va l ve
into ' the ri m hole, give the nut 2-3 turns inw a rds and place t he
remaining par t of the tube into the casi ng, takin g care that the tube
is not crease d;
before fit
ting the other tyre bead, depr ess the valve to the full ex-
t
ent so that the ty re b ead can enter the rim recess at th is place;
raise the other ty re bead at the side opp,osite the valve an d ho ld
the casi ng in this position with both feet;
fit the
ty re bead ,on the rim by hand, .gradually moving all the
way around the casin g circumference;
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