Checking the ZIL-131 pneumatic drive for serviceability
Before driving, make sure that the pressure in the system is not lower than 4.5 kg/cm 2
Engine cooling system is liquid, closed, with forced circulation of coolant
ZIL-131 wheels, disc, with split rim and spacer ring, interchangeable, rim size 9.0 RG — 20
Tires of size 12.00—-20, adapted to work at variable pressure