Other Checking and adjusting the valve clearance WARNING! Block the starting device. If the engine starts un- expectedly, there is a serious risk of injury. Special tools Number Designation Illustration 99 309 Turning tool for rotating the flywheel from below. 99 109 Turning tool for rotating the flywheel from above. 142 238 Tools Designation Illustration Torque screwdriver. 341 423 Note: Checking and adjusting valve clearances should also be carried out one more time after the first 500 hours of operation. Then, the normal interval follows every 2,000 hours. Valve transition occurs when the cylinder switches from exhaust stroke to intake stroke.
The exhaust valve is closing while the intake valve is opening. Carry out the adjustment on a cold engine. 00:23-02 en-GB 47 © Scania CV AB 2016, Sweden 312 733