
The oil pump (Fig. 1) is a two-section gear pump.
The upper section of the oil pump supplies oil to the engine lubrication system and to the centrifuge, and the lower section to the oil radiator.

Crankcase ventilation is forced, by sucking crankcase gases into the engine intake manifold through a special valve 3 installed on the intake manifold

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

The vehicle's electrical system is single-wire, with a nominal voltage of 12 V; the negative terminals of the current sources are connected to the body ("vehicle ground")
Symptom - Remedy
The generator does not provide charging current
Malfunction in the circuit generator - relay-regulator - battery or in the ground circuit - Find damage in the wiring or contacts and eliminate it: