Contents: Checking with a special device for…⤓ Adjustment using a special device…⤓ Adjustment using a set of feeler…⤓
To accurately set the angle of the breaker contacts, a special device for measuring the angle of the closing is used at service stations. This device has the advantage of allowing accurate setting of the closing angle even with slightly burnt contact surfaces. When using a special measuring device, connect it according to the manufacturer's instructions. However, as a temporary measure, instead of setting the closing angle, the contact gap can be adjusted.
Checking with a special device for measuring the closing angle
Connect the measuring device in accordance with the manufacturer's operating instructions.
Turn the engine over with the starter or run it at idle speed. Take the instrument reading.
The value of the closing angle should be 52° ±6° degrees. If the measured value is out of tolerance, adjust the closing angle.
Adjustment using a special device for measuring the closing angle
Using a screwdriver, release the 2 retaining clips on the side of the ignition distributor and remove the distributor cover.
Place the distributor cap aside so that any spark that may occur is reliably diverted to ground and cannot come into contact with your body.
Loosen, without unscrewing, the fastening screw "2" (Fig. G-1205).
Set the gearbox to neutral, set the handbrake. Have the assistant turn the engine with the starter and set the desired closing angle by shifting the contact pad of the breaker.
If the closing angle is too small, the distance between the distributor cam and the hammer should be reduced; if the angle is too large, the distance should be increased.
After setting the required angle value, tighten the fastening screws and check the closing angle again. If it goes beyond the tolerance, repeat the adjustment.
Adjustment using a set of feeler gauges
If there is no special measuring device, as a temporary measure, the setting of the closing angle can be made using a set of feeler gauges. Subsequently, it will be necessary to check the value of the closing angle using a special measuring device and possibly make adjustments.
Remove the spark plug distributor cap and remove the distributor rotor.
Engage 4th gear and move the car on a level surface or turn the engine by the crankshaft pulley until the plastic slider of the breaker contact is adjacent to the highest point of the distributor cam. When the gap is set correctly, the feeler gauge should fit tightly between the contact surfaces. The gap should be 0.45-0.55 mm, otherwise it should be adjusted.
In this case, when adjusting, you should strive for the lowest permissible value.
Attention: If the contacts are burnt, measure the gap only along the edge - in the middle, the measurements are distorted due to the presence of bumps on the surface of the contacts.
If the gap size does not correspond to the permissible values: Slightly loosen screws "1" and "2" (do not unscrew), see Fig. G-1205. Slightly move the contact support pad of the breaker with a screwdriver until the feeler gauge fits tightly between the contact surfaces.
After setting the required value, tighten the mounting screws.
Note: Since the installation using the feeler gauge is not precise, the closing angle must be checked later using a special measuring device.
Place the distributor boot and distributor runner onto the distributor axle, with the runner protrusion fitting into the recess on the axle.
Place the distributor cap on and install both retaining clips.
Set the ignition timing.