Hino K13C 12 Valve, Valve adjusting procedure, Valve lash clearance specifications, Page 1 of 2
HINO K13C 12V , VALVE ADJUSTING PROCEDURE METHOD FOR DETERMINING IF THE NO.1 PISTON IS AT
THE TOP DEAD CENTER ON COMPRESSION STROKE. NOTE:
1.
2.
Move both the intake and the exhaust rocker arms of the No.1 or No.6 cylinder by hand; if both rocker arms can be moved, the piston is at top dead center on the compression stroke. If the injection timing mark is nearly aligned with the pointer, the No.1 piston is at top dead center on compression stroke.
NOTE:
3.
PUSH RODS: MOVE (COMPRES SION STROKE)
PUSH RODS STANDING (OVERLAP PING STROKE)
o Turn the crankshaft to align the mark "1/6" on the flywheel with the pointer of the flywheel housing. o In this position the No.1 or No.6 piston is at the top dead center on compression stroke. The pointer and mark "1-6" are engraved on some model timing gear cover and on the torsional damper, so use these pointer and marker if so equipped when adjusting the engine.
If not, turn the crankshaft one complete revolution and align the marks as above.
While locking the push rods of No.1 and No.6 pistons, turn the crankshaft counterclockwise and clockwise about 30° to 40° as shown in the figure. If the piston whose exhaust and intake push rods do not move during the interval, it is at the top dead center on compression stroke. If the piston whose push rods have moved, it is at the completion of the exhaust and begun of the intake stroke (overlapping stroke).
NOTE: Always loosen the lock nut and raise the adjusting screws fully to the top. If the adjusting screws are too low, the piston and valves may strike each other during valve clearance adjustment.
SM3-F0263