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4.4.6.2. Engines 16DA (release since May, 1989)

Use of the dial measuring instrument


Check and adjustment of gas distribution in these models is carried out by means of the dial measuring instrument.

Before taking measurements, it is necessary to adjust a tension of a gear belt precisely.

Besides the measuring instrument, you need the KM-661-2 tool. It is the special plate intended for fixing of the measuring instrument over the camshaft (see fig. in the item 3 of subsection 4.4.6.1). You can manufacture the similar tool.

KM-661-2 tool

1 – wrench,

2 – the arm of a lock bolt welded on a basic plate

3 – lock bolt,

4 – the basic plate recorded by bolts of a cover of a head of the block of cylinders

You need also additional KM-661-2 tool intended for exact adjustment of position of the camshaft. The tool consists of the plate fixed over the camshaft, the wrench established on flat cuts of a shaft, and the lock bolt allowing to move smoothly the wrench handle.

Check

PERFORMANCE ORDER
1. Install the piston of the first cylinder in VMT and turn a bent shaft on 90 ° back. Install the measuring instrument on a basic plate over the second, from a pulley, a camshaft cam (a cam of the inlet valve of the first cylinder). The head of the measuring instrument has to rest against the main circle of a cam.
2. Establish an arrow of the measuring instrument on zero.
3. Accurately shift the measuring instrument together with a basic plate on 10 mm towards the top part of a cam. Install the piston of the first cylinder in VMT. Indications of the measuring instrument have to make 0,55±0,03 mm. If this is so, gas distribution is adjusted correctly.

Adjustment

PERFORMANCE ORDER
1. Weaken a bolt of fastening of a pulley of the camshaft and turn a shaft so that indications of the measuring instrument made 0,80 mm.
2. Install the KM-661-2 tool and by means of a lock bolt adjust indications to 0,60–0,64 mm. Remove the tool and tighten a bolt of fastening of a pulley.
3. Turn a bent shaft on two whole revolutions, again establish a basic plate and the measuring instrument and carry out an inspection. If necessary carry out repeated adjustment.