All articles on the device and repair of components and assemblies of the engine lubrication system for VAZ-2121 Niva cars and their modifications.
Lubrication system device The structure of the lubrication system is shown in Figure 2-67. Pic. 2-67. Lubrication system: 1 - oil supply channel to the main bearing; 2 - oil supply channel from the main...
Engine oil change The oil must be changed when the engine is hot. To completely drain the oil, wait at least 10 minutes after opening the drain hole. When changing the oil, the oil filter should...
Oil pump — removal, disassembly and installation The main dimensions of the pump and its drive are given in fig. 2-68. Removal and installation If only the oil pump needs to be repaired, remove the engine from the vehicle (see...
Checking the oil pump parts After dismantling, wash all pump parts with kerosene or gasoline, blow with compressed air, and then inspect the pump housing and cover; replace parts if cracked Check with a set...
Checking the pressure reducing valve When repairing the oil pump, check the pressure reducing valve. Pay attention to the surfaces of the valve and body, as possible contamination or deposits on the mating surfaces...
Oil pump drive shaft and gears There should be no dents or scratches on the surfaces of the bearing necks of the roller and on the working surface of the eccentric. On the teeth of the gears of the oil pump...
Oil pump drive shaft bushings Check the inner diameter of the bushings, their pressing into the sockets, as well as the coincidence of the lubrication hole in the front bushing with the channel in the cylinder...
Oil pump drive gear bush Check bushing tightness. The inner surface must be smooth and without scoring, otherwise replace the bushing. Use tool A.60326/R to press out and press in the bushing (pic. 2-74)....
Flushing the crankcase ventilation system For flushing, disconnect hoses 4 and 8 (pic. 2-75) of the ventilation system from the branch pipes, remove the flame arrester 5 from the hose 4, remove the cover 3 of the breather...