84
COnTROl SYSTEMS
Steering System
ATTENTION!
The disabled hydraulic power steering increases the
effort, necessary for turning the steering wheel.
It is not allowed to turn off the IGN and remove the key from the IGN
switch while the vehicle is moving. (The steering system shaft is blocked
by the anti-theft device when the key is removed, and the vehicle gets
uncontrolled).
If the steering system does not work properly, it is not allowed to
drive the vehicle or to tow it with a tow-rope. In this case use two wheel
towing or tow truck service.
To prevent the power steering pump failure and oil overheating it
is not recommended to hold the steering wheel in extreme positions
over 20 sec.
The maintenance of the steering system consists in the following:
periodically tighten the steering system bolts to the bracket; check the
tie rods studs, drop arm attachment, attachment of the steering knuckle
lever; check the steering wheel backlash; adjust the steering mechanism;
periodically add oil into the tank of the hydraulic power steering system.
Periodically check the tightening of ends nuts and tie rods locknuts
and do not let air gaps in the taper joints of levers and studs appear.
The vehicle is equipped with non-repairable ends of tie rods. They
do not require adjustment and lubrication during the vehicle operation.
If non-repairable ends have an air gap, replace them.
Do the first tightening of the steering mechanism attachment after
500 km run, and then according to the service book.
The total backlash is inspected while the engine is idling. The steering
mechanism is normal and does not require adjustment, if the total play
of the steering wheel does not exceed 20°, which corresponds to 74 mm
on the wheel rim.
If the backlash is higher than the allowable level, detect the unit,
which gives the increased play. Thus, the following shall be checked:
proper tightening (see Appendix 2) of the steering housing bolts, the tie
rod joints, tightening of the propeller shaft nuts, air gaps in the joints
and spline couplings of the steering column propeller shaft and air gaps
in the steering mechanism.
