car UAZ-3151

Repair of connecting rods comes down to replacing the upper head bushing and then processing it to fit a piston pin of a nominal size or to processing the bushing available in the connecting rod for a repair-size pin

Disassemble the bridge in the following order:
Install the bridge on the stand (Fig. 1), unscrew the oil filler and oil drain plugs and drain the oil.

If the oil pump parts wear out a lot, the pressure in the lubrication system decreases and noise appears

The lubrication system diagram is shown in Fig. 1.
Oil pressure in the lubrication system of a warm engine at low crankshaft speed 550–650 min -1