Valve adjustment, oil and filters, belt and pulley replacement

A routine replacement of engine oil, filters, and air filters was conducted, with the following usage statistics since the last service:

8,055 km
270 engine hours
840 liters of AI-98 (Gazpromneft)
10.42 L/100km
Average speed: 30 km/h

The specifications of the filters and oil matched the previous set used.

The cabin filter was replaced after 16,851 km.

The generator belt had been in service for 49,554 km since its last replacement. Visually inspected and deemed in good condition, a replacement interval of every 50,000 km was chosen.

Concurrently, one of the pulleys, which had been emitting a metallic knocking sound, was replaced. The pulley had been purchased in March 2018, hence its dusty appearance.

Valve clearances were adjusted after 43,362 km.

Intake valves were at 0.27 mm in some areas, exceeding the standard range of 0.18-0.22 mm. Exhaust valves were slightly below the lower limit at 0.18 mm, with the norm being 0.23-0.27 mm.

This led to suspicions of valve spring sagging, warranting further observation.

The engine’s condition is documented in the photo.

For the last 99,304 km, Honda 0w20 oil was used under various product codes.

Post-maintenance, the vehicle felt rejuvenated: idle vibration disappeared, the engine’s load-bearing sound lost its metallic tone, there was no drop in RPMs when the air conditioning was activated, and the accelerator response became more responsive.

As usual, sets for future engine maintenance were purchased in advance.