PRONAR T679/5, Operator'S Manual, Page: 112 / 116

PRONAR T679/5 SECTION 5
5.40
FAULT CAUSE REMEDY
Improper hydraulic oil
viscosity
Check oil quality, make sure that
the oil in both machines is of the
same type. If necessary change
oil in tractor or in trailer.
Insufficient tractor hydraulic
pump output, damaged
tractor hydraulic pump.
Check tractor hydraulic pump.
Damaged or contaminated
cylinder
Check cylinder piston (bending,
corrosion), check cylinder for
tightness (piston seal), in case of
need repair or replace cylinder.
Excessive cylinder loading
Check and reduce cylinder load, if
necessary
Incorrect hydraulic
system operation
Damaged hydraulic
conduits
Check and ascertain that hydraulic
conduits are tight, not fractured
and properly tightened. If
necessary replace or tighten.
Excessive wear of left
and right tyre shoulders
on both sides.
Too low air pressure in
tyres.
Excessive speed of travel of
loaded trailer on turns.
Too fast loss of air due to
damaged wheel, valve,
puncture, etc.
Check air pressure. Regularly
check correctness of air pressure
in tyres.
Excessive loading of the trailer.
Do not exceed the permissible
gross weight of the trailer.
Reduce speed of travel while
driving on turns on hardened
surface.
Check wheel and valve. Replace
damaged parts.
Excessive wear of central
part of tyre. Excessive air pressure in
tyres.
Check air pressure. Regularly
check correctness of air pressure
in tyres.
Excessive wear of left or
right tyre shoulder, on
one side
Incorrect toe-in.
Incorrectly positioned wheel
axles.
Damaged leaf spring on one side
of the suspension system.
Replace leaf springs.