BELARUS-1021/1021.3
Operating manual
133
Trouble, its manifestation
Remedy
5. Steering wheel does not return to neutral, the metering pump tends to rotate
spontaneously.
Too high friction or slight jamming in the
mechanical parts of the steering column.
Eliminate friction in the steering column
proceeding as follows:
- weaken the upper nut;
- lubricate the friction surfaces of the plastic
bushings;
- eliminate contact of the universal-joint
yokes with the walls of the steering column
bracket.
Spline drive of the steering column and the
metering pump are installed not coaxially (due
to thrust of the driveshaft).
Release the driveshaft by trimming the end
of the upper universal-joint yoke or reducing the
height of the lower rubber bushing to get a gap
between the end of the upper universal-joint
yoke and the sleeve.
Too little or no end clearance between the
spline drive of the steering column and the
metering pump spool.
Shorten the spline drive if the drive end
protrudes above the mating face of the steering
column bracket more than by 7.1 mm, or install
additional washers not thicker than 1.5 mm
between the metering pump and the bracket.
6. Spontaneous rotation of metering pump (steering wheel continues to rotate after making a
turn).
The sleeve grips the spool, possibly due to
dirt.
Rinse the metering pump parts and assemble
observing manufacturer’s instructions.
Spool return springs lost elasticity and
broken.
Replace the springs.
7. Constant adjustment of the steering wheel required (the wheel does not hold the road)
Spool return springs lost elasticity or broken.
Replace the springs.
Broken non-slam valve spring.
Replace the spring and adjust the pressure of
no-slam valves.
Worn out gerotor set.
Replace the gerotor set.
Worn out cylinder piston seals.
Replace defective parts of the cylinder.
8. Speed of sliding of the steering wheel is more than three rpm (applying a force of
100 ± 5 N to the wheel)
High leaks through the gerotor set.
Replace the gerotor set.
9. Strong jolts on the steering wheel in both directions
Incorrectly installed universal joint in the
metering pump.
Assemble the metering pump observing
manufacturer’s instructions.
10. Increased steering wheel play.
Not tightened tapered fingers of the cylinder
or steering rods.
Tighten the nuts of the fingers to a torque of
180 to 200 N•m, cotter them.
Worn out splines of the steering column
shank.
Replace the bottom universal-joint yoke.
Worn out steering column universal joint.
Replace the universal joint.
Spool return springs lost elasticity or broken.
Replace the springs.
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Страница 1: ...BELARUS 1021 1021 3 1021 0000010 OM OPERATING MANUAL Minsk Tractor Works 2010 ...
Страница 16: ...BELARUS 1021 1021 3 Operating manual 15 The transmission number Front driving axle number Cab serial number ...
Страница 107: ...BELARUS 1021 1021 3 Operating manual 106 Fig 6 9 2 Determining maximum allowable torque Power kW hp Speed rpm Torque Nm ...
