The MAZ clutch is a dry two-disc friction type with peripheral coil springs, installed in a cast iron crankcase. Serves for short-term separation of the engine crankshaft from the gearbox and their smooth connection when shifting gears and starting off. During operation, adjustments of the clutch and its drive are provided.
It is necessary
- - a set of open-end and spanner wrenches;
- - ruler and caliper
Instructions
Step 1
To fully adjust the clutch, adjust the amount of the middle drive disc backtrack to ensure the correct clearance between the clutch sliding surfaces. Also adjust the clearance between the end face of the valve body cap and its adjusting nut and the clutch pedal travel adjustment.
Step 2
Adjust the amount of retreat of the middle drive disc, having previously dismantled the hatch covers of the clutch housing and the flywheel housing. To do this, engage the clutch and set the gear lever to neutral. After that, start turning the engine flywheel, at the same time screwing four adjusting screws all the way into the middle drive disc, having unscrewed their locknuts in advance.
Step 3
After that, while continuing to rotate the handwheel, loosen the adjusting screws one turn and secure them with the locknuts. When tightening the locknut, hold the adjusting screw with a tool so as not to knock out the adjusted gap and do not apply significant force to the locknut.
Step 4
Measure the clearance between the end of the valve body back cover and the adjusting nut. It should be 3, 3-3, 7 mm. Check the size of the gap after each TO-2. To adjust it, loosen the adjusting nut locknut, set the required clearance and tighten the locknut, being careful not to disturb the set clearance.
Step 5
To check the free travel of the clutch pedal, take a ruler, bleed the air from the pneumatic system and measure the amount of pedal travel until the characteristic force appears. The measured value should be 34-43 mm. Check the free play at every TO-1. Before checking, make sure that the gap between the end of the valve back cover and the adjusting nut (item 4) is correct.
Step 6
To adjust pedal free play, disconnect the double-armed pedal lever from the valve stem fork and the clutch stem fork. Move the piston of the cylinder to the lowest position, move the lower end of the two-armed lever back to the stop. Make sure the bore of the cylinder rod yoke and the bore of the lever do not line up approximately 50%. If the holes are deviated significantly more or significantly less, adjust the misalignment by rotating the cylinder rod to the desired size.
Step 7
After that, connect the two-arm lever with all the disconnected elements, and adjust the distance between the holes of the forks by rotating the forks themselves. If the friction linings of the driven discs are worn out, it will be impossible to change the distance between the forks of the stem. In this case, remove the double-arm lever from the clutch fork shaft and move it 1 slot counterclockwise. Then re-adjust the clutch pedal free play.
