Check and adjustment of backlashes between the valves and rockers with overhead valve engine. stole

Check and adjustment of backlashes between the valves and rockers with overhead valve engine. stolen vehicle Check clearances between the valves and rockers 3 2 engines on ZIL-130 (see Fig. 71) produced through 11000- 18,400 km mileage car (through one-2), on dvigate lyah ZMZ-66 stolen vehicle and ZMZ-53 - through stolen vehicle D) 500-8500 km, and on the engine JAMZ-236 - through the 5000-9000 km run (for each TS-2). Adjusting the clearance produce pas-ups at all valves are closed, which corresponds to finding the pistons alternately in. m. tons. end of the compression stroke. To install the piston of the first cylinder in. m. tons. zhatiya end of a step in the engine ZIL-130 is rotated crank / (see Fig. 72) crankshaft to align the labels - 3 holes on the pulley of the crankshaft 2 labeled "TDC" on the index 4 Position Ignition. In this case, between the ends of the valve stem 2 (see. Fig. 71) of the first cylinder and the rockers 3 formed maxi- (imalny gap, which is replaced by the probe 1 The gap between the intake and exhaust valves and rocker arms on a cold engine ZIL-130 must be the same and be in the range - 0,40-0,45 mm. This probe 0.40 mm thick must pass freely through obrazo vavshiysya gap and probe thickness 0.45 mm must be clamped (not held). On engines ZMZ- 53 (66) and JAMZ-236 (238), this za- Grid should be 0.25-0.30 mm. clearance if necessary adjusted. Adjusting the clearance between the rocker arm and the toe end of the valve stem on the engine ZIL-130 by rotating the screwdriver adjustment screw 5 at the released (key) locknut 4 (see Fig. 71).
Fig. 71 Check and adjust clearance between the valves and co-romyslamy engine ZIL-130 overhead kla panov: 1 - probe to check clearances; 2 - Valve; 3 - korrmyslo; 4 - adjusting screw lock nut; 5 - the adjusting screw rocker arm. After installation of the piston of the first cylinder in position. m. tons. the end of the compression stroke verification and adjustment of backlashes of valves in all cylinders can be carried in two ways. 1 way - one at a check valve clearances of each cylinder. The check and adjustment stolen vehicle of backlashes "in the valve mechanism other cylinders is carried out in a sequence corresponding to the order of the engine: 1-5-4-2-6-3-7-8 to this end, each time the crankshaft is rotated by 90 and pulley 3 (see. Fig. 72) are applied to four marks spaced stolen vehicle at 90 , and each time the shaft is rotated, combining another label with a label in. m. tons. 4 Position the pointer on the ignition. 2 way - while also ensuring that the closed stolen vehicle valve several stolen vehicle cylinders. After installation of the piston of the first cylinder in position, m. tons. the end of the compression stroke check and adjust the gaps: the exhaust valves 1, 4 and 5 of the cylinder; intake valves 1, 7 and 8th cylinders. Next, crankshaft rotated 180 (half a turn), check and adjust the exhaust valve clearances 2nd cylinder and intake - 5th cylinder. shaft then turned another 180 , check and adjust the gaps: the exhaust valves stolen vehicle 3, 6, and 7 th cylinder; Intake valves 2, 4, and b-th cylinder. Then the shaft is rotated another 180 , whereupon check and adjust the exhaust valve clearances. 8-cylinder and intake valve cylinder 3. After adjustment, it is necessary stolen vehicle to replace the valve cover.
Fig. 72 Installation of the piston of the first cylinder engine ZIL-130 in. m. tons. the end of the compression stroke: 1 launcher grip; 2 - kolen chatogo pulley shaft; 3 - adjusting label-hole in the pulley; 4 - Position the pointer stolen vehicle of ignition; 5 - cover raspredelitel nyh gears; 6 - ratchet crankshaft. Installation of the piston stolen vehicle of 1st cylinder in position. m. tons. the end of the compression stroke on engines ZMZ-66 (53) produced by the coincidence of the ball, staked into the flywheel, with the pointer on the crankcase stseple niya at Remove the spark at the head of 1st cylinder. Adjust the valve clearances engine ZMZ-66 (53) is carried out in the same way as in the engine ZIL-130. stolen vehicle Adjusting the clearance between the rocker arms and the valves in the engine JAMZ-236 stolen vehicle in the following sequence. Di namometricheskim key check bolts fastening the axles Rocker applying moment 117,68-147,1 n-th (12 to 15 kgm). Crank the engine crankshaft to match marks on the crankshaft pulley with the zero mark on the cover ras predelitelnyh gears, and intake and exhaust valves should be closed. After the shaft has rotated 40 to run and regulate the valve clearances of the first and chet vertogo cylinders. Next, the shaft is rotated by 240 and adjust stolen vehicle the clearances in the valve mechanism 2, and 5th cylinders, and then, still rotating the shaft 240 , adjusted clearance in the valve mechanism 3 and the 6th cylinder. Procedure for adjusting the valve mechanisms on the motor LMZ-238 is the same, but the crankshaft must rotate through 180 , and the clearance is controlled to alternately tsi lindrov following pairs: 1 and 5; 4 and 2; 6 and 3; 7 and 8 ohms. Comments: 0 | & n

MORE