Section F. Adjustments
Belarus-510/512
Operating manual
71
IMPORTANT!
In case of significant
wear of brake bands, turn the eccentric
axle by 180°, removing excessive
clearances between the brake band
and drum (flat on the left). After that, fix
the shaft with the lock bar (17) and bolt
(16).
After several external readjustments, the
eccentric axle 15 (Fig. 2) takes the left-
most position (the flat “B” is on the left
vertically), which indicates that no more
reserve of external adjustment is availa-
ble. In such a case, set the eccentric
axle to initial position by rotating it
counter-clockwise (the flat is on the
right vertically), after that perform ad-
justments as described for PTO control
adjustment for assembly by manufac-
turer or PTO repair.
When adjustment is correct, the lever 1
(Fig. 1) in the ON position must be at
least 50 mm away from the cab floor
(dimension “B”).
On tractors of earlier make, the PTO ex-
ternal readjustment mechanism may not
be available (pos. 15, 16, 17, Fig. 2). In
such a case, adjust as specified above
for adjustment of PTO control after repair
or in assembly by manufacturer. On
small-cab tractors, the dimension “B” is
50 to 60 mm. PTO brake efficiency, ab-
sence of slipping depends only on the
spring mechanism and first of all on
availability of vacant spaces around it and
the levers connected with it. PTO slipping
means that the spring mechanism or the lev-
ers meet additional resistance when moved
over due to lack of lubricant in joints, high
contamination, touching adjacent tractor parts
etc.
ATTENTION!
Perform all adjustments with the engine off.
