The diesel fuel supply system (Fig. 1) consists of a high pressure fuel pump 4, injectors 13, low 6 and high 9 pressure pipelines, intake 12 and exhaust manifolds, coarse 3 and fine 10 fuel filters, fuel tank 1, pipelines and hoses

When repairing after disconnecting fuel lines, injectors and filters, all openings must be protected from dirt with plugs, caps, plugs or clean insulating tape

Exhaust system of engine D-245.7E2 / D-245.9E2

The exhaust system consists of a muffler 6 (Fig. 1), a neutralizer 3, a intake pipe 1 and an exhaust pipe 8

Diesel cooling is liquid with forced circulation of coolant from a centrifugal pump. The design of the cooling system is shown in Figure 1

Diesel model D-245.7EZ is installed on PAZ-32053-07 buses. Diesel model D-245.9EZ is installed on PAZ-4234 and PAZ-32053-07 buses

Combined diesel lubrication system

Oil pump - gear type, single-section

Sludge is drained from the fuel coarse filter daily. To drain the sludge you need:

Setting the fuel injection advance angle for diesel D-245.7E3 / D-245.9E3 bus PAZ 32053-07

The need to install (reinstall) the pulse wheels of the crankshaft and the fuel injection pump drive gearbox shaft to synchronize them may be caused by rearranging the fuel injection pump drive gearbox during routine diesel repairs

If a malfunction occurs during operation of the bus (the diagnostic lamp of the "COMMON RAIL" system lights up or flashes), it is necessary to diagnose the "COMMON RAIL" system using the diagnostic lamp and diagnostic key and eliminate the identified malfunctions

Clutch (Fig. 1) single-plate diaphragm type with a damper device on the driven disk

Gearbox manufactured by JSC "SAAZ AMO ZIL" - mechanical, five-speed, synchronized, with a central control lever, with direct or overdrive fifth gear

The cardan transmission of the bus consists of two shafts (Fig. 1), an intermediate support and three cardan joints

The buses are equipped with rear axles manufactured by Ryazan Avtoagregat LLC (abbr. RAA) or KAAZ OJSC

The front and rear suspensions of the bus (Fig. 1 and Fig. 2) consist of longitudinal semi-elliptical springs and hydraulic shock absorbers

The steering (Fig. 1) consists of a steering wheel, a steering column with a casing, a universal joint, a steering mechanism, a power hydraulic cylinder, a power steering pump, pipelines with hoses, longitudinal and transverse steering rods

Checking the condition of brake drums, pads and friction linings of wheel brake mechanisms is carried out at each maintenance-2

The pneumatic system of bus brakes consists of a compressor, pneumatic devices and pipelines

The diagram of the pneumatic drive of the brake system is shown in Figure 1.

An alternating current generator with a built-in semiconductor rectifier and an integrated voltage regulator is the main source of electrical energy