For tightening with particularly high precision (assembly of engine units, important building structures), use pointer wrenches; for quick assembly with the required tightening torque (tightening anchor bolts, tightening bolts during tire fitting), use limit type wrenches
Purpose, design and operation of the EFU
The device is designed to facilitate starting a cold engine at air temperatures down to -25 °C, quickly return the engine to normal temperature conditions and reduce smoke that occurs in a cold engine.
The power supply system (Fig. 1) serves to power consumers when the engine is running
The control and measuring instrument system (Fig. 1) is designed to monitor the operating mode of units and individual assembly units of the vehicle, as well as to determine the speed of movement
The light signaling system (Fig. 1) is designed to notify drivers of other vehicles about a turn (U-turn) or braking, as well as to signal the state of vehicle assembly units that affect traffic safety
The external and internal lighting system (Fig. 1) is designed to ensure vehicle safety, as well as illumination of the driver’s workplace
Analysis of failures in the power supply system
The main causes of failures in the power supply system are:
