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Maintenance
Incorrect hydraulic
system operation
Excessive wear of
left and right tyre
shoulders on both
sides.
Excessive wear of
central part of tyre.
Excessive wear
of left or right tyre
shoulder, on one
side
Worn tyre tread.
Insufficient tractor hydrau-
lic pump output, damaged
tractor hydraulic pump.
Damaged or contaminated
cylinder
Excessive cylinder loading
Damaged hydraulic lines
Too low air pressure in
tyres.
Excessive ground speed of
loaded trailer on turns.
Too fast loss of air due to
damaged wheel, valve,
puncture, etc.
Excessive air pressure in
tyres.
Incorrect toe-in.
Incorrectly positioned wheel
axles.
Damaged suspension sys-
tem, broken leaf spring.
Damaged brake system,
blocking of brakes, in-
correctly adjusted brake
system. Too frequent and
violent braking.
Check tractor hydraulic pump.
Check cylinder piston rod (bending, corro-
sion), check cylinder for tightness (cylinder
piston rod seal), if necessary, repair or
replace the cylinder.
Check and reduce cylinder load, if neces-
sary.
Check and ascertain that hydraulic lines
are tight, not fractured and properly tight-
ened. If necessary, replace or tighten.
Check air pressure. Regularly check cor-
rectness of air pressure in tyres.
Excessive loading of the trailer. Do not
exceed the permissible gross weight of the
trailer.
Reduce ground speed while driving on
turns on hardened surface.
Check wheel and valve. Replace dam-
aged parts.
Check air pressure. Regularly check cor-
rectness of air pressure in tyres.
Damaged leaf spring on one side of the
suspension system. Replace leaf springs.
Check suspension system for looseness,
check leaf springs. Replace damaged or
worn elements.
Check brake system for malfunctions.
Adjust expander lever.
PRONAR T700M/1
Section 6
6.15
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