What is the valve clearance for Weichai engines?
1 Answers
Weichai intake valve clearance is 0.3mm, and exhaust valve clearance is 0.35mm. There are two common methods for checking and adjusting valve clearance: 1. Cylinder-by-cylinder adjustment method - After determining the piston position at compression top dead center according to the cylinder firing order, the intake and exhaust valve clearances of that cylinder can be adjusted; After adjustment, rotate the crankshaft and gradually adjust the valve clearances of other cylinders using this method. 2. Two-step adjustment method - Rotate the crankshaft to position the first cylinder piston at compression top dead center, align the flywheel mark with the inspection hole mark, then adjust valves 1, 2, 4, 5, 8, and 9. Then rotate the crankshaft one full turn to position the sixth cylinder piston at compression top dead center, and adjust valves 3, 6, 7, 10, 11, and 12.