BELARUS-1221.2/1221
В
.2/1221.3 Possible defects and ways of their elimination
217
Defect, external manifestation
Way of elimination
lease bearing.
Increased deformation of driven disks.
Check butt beats of driven disk linins in re-
lation to the external diameter of hub
splines – it must be not more than 0,8 mm
on the radius of 165 mm.
If it is impossible to flatten replace the
disks.
Jamming of driven disk hub on the splines
of transmission shaft.
Peel the splines, providing free travel of
disks on the transmission shaft.
Transmission shaft bearing in the flywheel
is disrupted.
Replace the bearing.
The clutch lever does not go back to the initial position when releasing clutch ped-
al
There is no gap between piston and piston
follower of the main cylinder on reverse.
Adjust (see section “Maintenance”).
There is no gap between the operating cy-
linder piston follower and hydraulic booster
guide bar.
Adjust (see section “Maintenance”).
The piston of the main cylinder jams on reverse (it doesn't move to the initial posi-
tion) because of cuff and sealing ring inflation, which leads to overlapping of
compensation ports.
The piston of the operating cylinder jams
because of cuff inflation.
Using inappropriate brake fluid or presence
of mineral oil, petrol, kerosene, diesel fuel
in the brake fluid.
Wash out carefully the whole system of hy-
draulic drive with brake fluid. Replace dam-
aged cuffs and a sealing ring in the main
and operating cylinder. Replace brake fluid.
Bleed the hydraulic system with brake fluid
on reverse.
Stiff transfer of hydraulic booster piston.
Replace hydraulic booster.
Clogging of the compensation port in the
main cylinder on reverse.
Clean the compensation port of the main
cylinder on reverse and remove air from the
system.
Loss of pullback spring resistance.
Replace spring
There is no full travel of clutch lever when pressing clutch pedal
There is no gap between the piston and the
operating cylinder piston follower on re-
verse.
Adjust (see section “Maintenance).
There is no gap between the main cylinder
follower and hydraulic booster guide bar.
Adjust (see section “Maintenance).
Presence of air in hydraulic system of
clutch control on reverse.
Bleed hydraulic system with brake fluid on
reverse.
Insufficient level of brake fluid in the tank of
hydraulic system on reverse.
Pour the brake fluid to the tank of the main
cylinder up to the level on reverse. Bleed
the hydraulic system with brake fluid on re-
verse.
Impermeability violation of work spaces of
the main and operating cylinders because
of damage, wear-out of cuffs or sealing
Replace cuffs and a sealing ring in the
main and operating cylinder. Make sure
that there are no sharp edges, high spots
Summary of Contents for 1221.2
Page 1: ...BELARUS 1221 2 1221В 2 1221 3 1221 0000010РЭ OPERATORS MANUAL 2009 ...
Page 290: ...BELARUS 1221 2 1221В 2 1221 3 Supplement 293 Electrical scheme of tractor connections ...
Page 291: ...BELARUS 1221 2 1221В 2 1221 3 Supplement 294 Variants of tractor connections ...
Page 293: ...BELARUS 1221 2 1221В 2 1221 3 Supplement 290 826 3805010 instrument board scheme ...