Weichai America Corp.
44
2.
Measure the valve clearance, check the valve clearance change.
3.
Loosen the hexagon head bolts (6) if the rocker is not rotating properly or the valve
clearance is greatly changed, then gently remove the rocker arm assembly (5), rocker arm
assembly (4) and rocker bracket ), Well marked, so as not to confuse each cylinder rocker.
5.3.4 Installation
1.
Insert the cylindrical pin into the pin hole in the plane under the rocker arm shaft, hit the pin
in the end, and there is no crack in the pin.
2.
Assemble the rocker arm bracket (7) with the rocker arm shaft assembly (5), the rocker arm
bracket (7) and the rocker arm shaft assembly (5) should be tightly combined, and apply a
small amount to the rocker arm shaft assembly After the lubricant is installed on the rocker
arm assembly (4), the rocker arm assembly (4) is rotated flexibly, and two hexagonal head
bolts are inserted on the rocker arm shaft assembly (5)
3.
Fill valve push rod, see the valve push rod assembly process, the valve into the exhaust
valve respectively (2);
4.
Install the rocker arm assembly (4) and pre-tighten, align the pin hole on the lower side of
the rocker arm bracket with the locating pin on the plane on the cylinder head, and fully
seat the rocker arm ball pin in the hole of the valve push rod;
5.
Tighten the rocker shaft assembly bolt (6).
Check, adjust into the exhaust valve clearance
.
1.
Catch a cylinder on the dead center, that is, the flywheel engraved line and flywheel shell
line alignment, to determine a cylinder compression top dead center;
2.
Adjust the intake valve clearance of 1, 2 and 4 cylinders, exhaust valve clearance of 1, 3
and 5 cylinders; intake valve clearance (0.5) mm; exhaust valve clearance (0.8) mm. Intake
and exhaust valve adjustment nut tightening torque (45 ± 5) N · m,
3.
on the flywheel shell fixed device and fastening the outer two hex nuts, turning to the six-
cylinder top dead center;
4.
Adjust the intake valves of cylinders 3, 5 and 6 and the exhaust valve clearance of cylinders
2, 4 and 6. 6-cylinder piston in the top dead center position. Intake valve clearance (0.5)
mm; Exhaust valve clearance (0.8) mm;
5.
Check the cylinder with a cold phase gas phase, the intake valve before the top dead center
(19 ± 5) °, the exhaust valve closed only after the point (21 ± 5) °, the intake valve closing
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
